Toon Verbeek

- freelance product & AI engineer

From Amsterdam 🇳🇱

[Toon Verbeek @tonnusos]

@ThePrimeagen Red Rising series (6 books out, waiting on final book 7 to be released)

[Toon Verbeek @tonnusos]

@gavinpurcell Trying this with a game idea i've had for a while! Will report back

[Toon Verbeek @tonnusos]

@WarnerTeddy this is such a neat idea!

[Toon Verbeek @tonnusos]

@mauricekleine Nice! Didn't know about superset. Do you run your agents locally or in the cloud?

[Toon Verbeek @tonnusos]

@CloudflareDev i'm building an AI internal OS of sorts on top of the AI stack (DOs, workflows, AI gateway, MCP portal, etc.) where i need to connect agents to different data sources. Is there any product you're planning in this space? Would love to keep everything in CF!

[Toon Verbeek @tonnusos]

@josefchen Super useful that it generates nutritional labels as well. Never seen that before!

[Toon Verbeek @tonnusos]

@mattpocockuk Excellent context for a skill I've been using daily for the last few weeks! The concept of 'dumb zone' context windows especially. Created a little claude toolbar for it to help me remember to handoff!

[Toon Verbeek @tonnusos]

@threepointone @FredKSchott This is cool! I was the manual schedule but had to transition to workflows because i had long running sync steps woth external services though. If im understanding correctly this wraps the manual schedule function with a dsl?

[Toon Verbeek @tonnusos]

@threepointone How would this work today without subagents? Would love to see before/after!

[Toon Verbeek @tonnusos]

@filippkowalski So you're running claude code on the VPS to run a security audit?

[Toon Verbeek @tonnusos]

I leave X for 1 month, and of course @openclaw happens.

Set it up this morning and asked it to read data from my Whoop and it built a skill in 2 minutes. This is gonna be fun

[Toon Verbeek @tonnusos]

@Siron93 Congrats dude! Looking forward to using it

[Toon Verbeek @tonnusos]

@DannyLimanseta Looks cool! Is the artwork also AI-generated?

[Toon Verbeek @tonnusos]

@Siron93 This is awesome, thanks man 👏

[Siro @Siron93]

100 Lessons From Bootstrapping My App to a 7-Figure Exit

1. Your onboarding is your first date with the user. Don't blow it. This is arguably the single most critical flow in your entire app. You usually get one shot to convince a user you're worth their time and money.

2. Stop selling features during onboarding. Nobody cares about your "proprietary algorithm." They care about the benefit.

3. Don't hope the user stumbles upon your app's magic. Design your onboarding to guide them directly to that "Aha!" moment, the instant they get why your app is awesome. The faster they get there, the more likely they are to stick around.

4. Don’t just ask for notification permissions. Build a short flow that shows why they’re valuable for the user. The right context can turn a 'No' into a 'Yes'

5. If it's not strictly necessary for your app to function, never put a sign-up form before the user sees the core value or the paywall. We found that sign-ups are one of the biggest drop-off points

6. In all our tests, a personalized onboarding flow crushed a generic one. Ask a few simple questions to tailor the experience. It makes the user feel understood.

7. The right number of onboarding steps is the one that works for you. After endless testing, you'll find a balance.

8. For a multi-step onboarding, a progress bar is a must. It reduces friction and helps with retention because users can see the finish line. It's a small detail that signals you respect their time

9. If your app transforms something (a photo, a fitness journey), show it. A powerful "before and after" visual helps the user instantly grasp the value and motivates them to get started

10. Incorporate trust signals right into your onboarding. This can be anything from press mentions ("As seen in..." but don´t cheat if you don´t have them) to user testimonials ("Join 50,000 happy users"). It tells new users they're making a smart choice, not a risky one.

11. Loading screens during onboarding are prime real estate. Instead of a blank spinner, show testimonials, ratings, or quick wins. It keeps users engaged and reinforces why they made the right choice

12. You built the app for a reason, but the user is downloading it for their reason. Dig deep into what they hope to achieve. Is it to save time? Make more money? Reduce stress? Speak their language, not yours

13. A powerful onboarding technique is to first articulate the user's pain point. "Tired of messy notes?" Then, immediately follow up with how your app is the cure. This problem-solution framing makes your value proposition crystal clear

14. Every extra field you ask for name, email, phone number is another chance for the user to drop off. Unless it's essential for personalization or for the app's core function, save it for later or don't ask at all.

15. Ask a simple, positive question like, "Are you ready to improve your health?" The user will almost certainly tap "Yes." This small, unconscious commitment makes them more likely to follow through with the rest of the onboarding.

16. A subtle but powerful onboarding trick: ask users to commit with a small ritual. It could be drawing a checkmark, signing their name, or tapping 'I promise.'

17. Another powerful onboarding trick: use 'Do you relate?' statements. For example, 'Struggle to stay organized?' When users tap yes, you’ve framed their pain and primed your app as the solution.

18. After a user makes a choice or answers a question, show them a quick screen that says something like, "Great choice!" or "We've got you covered." It's a small psychological boost that makes the experience feel more like a supportive conversation

19. Celebrate progress. People stick with what makes them feel good. This can help with retention

20. If your app type allows it, add a leaderboard. A little friendly competition can be a huge retention driver.

21. Same as the previous tip, if your app type allows it, when users hit milestones, give them a beautiful share card. It feels good to show progress and could spread your app organically.

22. Referrals are tricky, most flop. But when they work, it’s because both sides win. Give the friend free access or a bonus, and the inviter a reward too.

23. Your App Store screenshots are your billboard. Use them. This is one of the first things a potential user sees. Don't just show random screens. Use your screenshots to tell a story and scream your app's main value proposition. Make them count. Follow accounts like @designerants and @screenshotfirst

24. App Store screenshots without strong headlines are wasted. Use bold, benefit-driven text that tells users what’s in it for them. Features explain, benefits sell.

25. Build for the average user, not for yourself.
You live and breathe your app, but your users don't. The average person is busy, distracted, and not as tech-savvy as you. Always design with this in mind. If a feature isn't intuitive, it's a design failure, not a user failure.

26. A tool like Mixpanel is essential. It'll show you which features users love and which ones are dead weight. This data is gold. It tells you where to double down with your development efforts and what new feature is a complete waste

27. One of our best sources for feature ideas was finding creators in our niche on social media. We'd look for their top-performing posts.
If a "social media calendar idea" went viral, it was a clear signal to try out something similar in our app.

28. In the early days, we used Smartlook to watch screen recordings of real user sessions. It´s amazing for finding friction points and understanding behavior in a way analytics can't show you.
I don't recommend keeping it forever but it can be insanely helpful when you start

29. Add gesture recording.
This is a small but powerful helper. When a user sends a screen recording of a bug, also recording where they are tapping helps you and your developers instantly see what went wrong. No more "I tapped the button and nothing happened" mysteries

30. If your app loads content like images or videos, don’t leave a blank box. Use skeleton loaders so users see a preview instead of staring at nothing.

31. When a user clicks "Contact Support," automatically populate the email with their device model, OS version, and app version. This saves countless back-and-forth emails and lets you provide faster, more effective support

32. Replying to reviews, both good and bad, shows you're listening. It builds community, gives you a chance to turn a negative experience around, and shows potential new users that a real human cares about the app.

33. Go read the 1-star and 5-star reviews for your top competitors. You'll get tons of insights into what people love, what they hate, and what features they're begging for. It's an absolute goldmine.

34. A simple "What's New" popup or section is powerful. It shows users that the app is actively maintained and improved, reinforcing its value and making them feel good about their subscription.

35. If your app uses a costly API like OpenAI, build a way to remotely limit or disable that feature for specific users. This saved us a ton of money. There will always be bad actors who try to exploit your service, so be prepared.

36. When a critical external API goes down, your app shouldn't just break. Set up a simple, triggerable in-app message to inform users of the issue. It manages expectations and stops your support inbox from exploding

37. If you push a major bug, you need a way to get everyone on the new, fixed version ASAP. A popup that forces users to update is your emergency escape hatch. You won't need it often, but when you do, you'll be glad you have it.

38. If your app is larger than 200MB, users on a cellular connection will get a pop-up from Apple asking for confirmation before downloading. It's an extra step and an unnecessary point of friction. Optimize your app size if you can

39. Show your paywall during onboarding.
This is non-negotiable. As many in the space have shared, the highest concentration of users who will ever pay you is in the onboarding flow. They are at their peak motivation. Don't miss this opportunity.

40. A user might not be ready to buy the first time they see your paywall, or the second. Showing the paywall on app open is a simple, effective way to consistently prompt the conversion.

41. Hard Paywall vs. Soft Paywall: You have to test it.
There's no universal answer here. For us, a hard paywall (no access without trial) was the right move, but every app is different. It's one of the most important A/B tests you can run.

42. Don't be afraid to test radical price points
We tested things that felt crazy, like putting a $39.99/year plan against a $99.99/year plan. You'd be absolutely surprised by the results. Don't assume you know what your users are willing to pay. Let the data tell you.

43. We were hesitant, but testing a weekly plan was an eye-opener. The lower price point makes the decision to try feel much less risky for users. We were surprised at how many people were more willing to jump in with a smaller, weekly commitment.

44. Weekly plans mean it takes longer to recover your ad spend. Before you go all-in, let a few cohorts run for 1-2 months. This gives you a real look at the LTV and helps you understand how many users stick around, so you can model your cash flow without panicking.

45. We never thought a lifetime offer was a good idea, but we tried it and were blown away by the results. The key is to price it slightly higher than your average customer lifetime value (LTV). It's a great cash injection and appeals to a specific type of power user.

46. If you're using a soft paywall, trigger a discount offer on the exit attempt. You can recapture users who are on the fence but price-sensitive.

47. When a user starts a free trial, don’t just drop them into the app. Show a screen that highlights what they unlocked and guide them to the most valuable features. It reinforces value and boosts retention.

48. When you're pouring money into ads, cash flow becomes king. You need to pay for ads today for revenue that might come in weeks or months later. A service like Braavo can bridge that gap. If you can manage cash flow without them, great. If not, they're a lifesaver.

49. It's easy to get lost in data. We found that focusing on just two things kept us sane and on track: a) our install-to-paid conversion rate, and b) our average revenue per user (ARPU). Everything else was just noise, distracting us from what actually grew the business

50. Mobile retention is brutal. Don't freak out, but don't ignore it.

51. We used Adapty's @adapty webhook system to pipe all our revenue data into our own internal dashboard. This let us track cohort performance over time exactly how we wanted to. RevenueCat offers similar capabilities. Don't rely solely on App Store Connect; get granular with your own tools.

52. This is a power move. Forward your events from Adapty/RevenueCat to an analytics tool like Mixpanel. Seeing app usage (like "feature_X_used") and subscription events (like "trial_started") on the same chart is insanely helpful for understanding what actions lead to revenue.

53. We never had a period without an A/B test running. We were always running some test. This constant state of testing is how you find incremental wins that compound over time.

54. It's tempting to jump to conclusions when one version pulls ahead after a day. Don't. You need a statistically significant number of users in your test cohort before you can trust the results. Calling a test too early is one of the easiest ways to fool yourself.

55. Use Mixpanel or Amplitude to create a funnel report for every single step of your onboarding. This will immediately highlight your biggest drop-off points. You might discover that one specific screen is causing 40% of your users to quit. That's the screen you fix first.

56. After you've been running for a while, you'll have enough data to build predictive models. Being able to estimate how much revenue a new user is likely to generate (their predicted LTV) is a massive unlock, especially for paid ads. It helps you know instantly if your campaigns are profitable.

57. Your ad creative is 90% of the battle. Seriously.
This isn't a hot take, but I'm repeating it because it's the absolute truth.

58. The creatives we thought were genius often flopped, and the ones we almost didn't run became our biggest winners. Your gut is not a reliable indicator of ad performance. Test everything, especially the weird stuff.

59. This is a non-negotiable. When you work with a creator, make sure your contract gives you the rights to all the raw, unedited footage. One 30-second video can be remixed into an infinite supply of ad variations, hooks, and new creatives.

60. Ad fatigue is real. You need to be feeding your campaigns new creatives on a weekly basis. This keeps performance from stagnating and constantly gives the algorithm new material to test.

61. Every so often, take a creative that was a top performer months ago and run it again. You'll be surprised how often old winners can find a second life and start performing again.

62. There are tons of platforms to find creators, a good one that I can recommend is from @tadasgedgaudas

63. Start your DM to an influencer with "PAID PROMO"
If you're reaching out on social media, lead with "PAID PROMO" in all caps. Their inbox is flooded. This simple trick makes your message stand out and signals that you're a serious partner, not just another fan asking for a shoutout

64. Match your creator's age to your target audience.
The Meta algorithm is smart. It sees the age of the person in your ad and tends to show it to people in a similar age bucket. We saw a massive jump in conversions when we started working with creators aged 30+, because that was our ideal customer.

65. Guide your creators, but give them creative freedom. Give them a clear brief with the key benefits you need to communicate, but then let them do their thing. The ad will feel far more authentic if it's in their voice and style. Micromanaging creators kills the magic.

66. Never mix USA with other countries in the same campaign.
The cost, competition, and user behavior in the USA are completely different from other geos.

67. We ran our main testing campaign targeting only the USA. Yes, the CPMs are higher, but we saw that winning ads in the US almost always performed well elsewhere. It was a more reliable signal for us (though this may not apply to every app).

68. Run one testing campaign and one scaling campaign.
Keep it simple. We had a single testing campaign where we'd throw in new creatives. Once an ad proved itself by getting significant spend, we'd move that winning creative over to our main scaling campaigns.

69. If you target the US, set your ad account timezone to the US. I got this tip from @nico_jeannen
If your ad account is set to your local timezone (e.g., in Europe), Meta's "day" will reset at your midnight, which could be the middle of the day in the US, messing up your budget pacing.

70. Be prepared to lose money before you win.
Paid ads are not a magic money machine from day one. I'd say don't even start unless you're mentally and financially prepared to "lose" at least $5k. Consider it tuition for learning what works for your app.

71. Ads take time. Be patient.
You can't expect a new campaign to be profitable on the first day. The algorithm needs time to learn and find your audience. Rushing to judgment and killing campaigns too early is a classic beginner mistake.

72. Use the Meta Ad Library. It's free and it's a goldmine. Search for your competitors and see what ads they're running. Pay attention to the ones that have been active for a long time, those are usually their winners. Save the best ones and use them for inspiration.

73. Even small, personalized touches inside the app can help with retention. In the hyper-competitive app world, improving retention by even 1% can be the difference between success and failure.

74. I know a lot of apps ask for a review during onboarding, but that never felt right to us. We chose to trigger the rating prompt only after a user experienced a core "Aha!" moment in the app. They're happiest at that point, so the review is more likely to be positive.

75. If you want to ask for reviews during your onboarding, make it feel native. A custom screen that explains why feedback matters (and shows ratings/testimonials) works very good

76. Report negative reviews. Many will get removed.
If a review is abusive, spam, or clearly violates the App Store guidelines, report it. You'll be surprised how many of them actually get taken down. It's a simple way to clean up your rating.

77. Buying reviews is a terrible idea and will probably get you banned at some point. To get your initial traction, just ask your friends, family, and early supporters to download the app and leave an honest review.

78. In the very beginning, we sent thousands of emails offering people free access to our app. This is how we got our first real users and our initial wave of reviews. It's a grind, but it works.

79. If you're running paid ads on multiple channels (TikTok, Meta, Google), add a simple "How did you hear about us?" screen in your onboarding. The data won't be perfect, but it can provide valuable directional insights to inform your marketing spend.

80. Don't let the emails you collect go to waste. If a user churns after a subscription, send them a follow-up email with a special offer. You can even link them to a web checkout to try and win them back.

81. Track which users cancel their trial. The next time they open the app, they are clearly still interested. Hit them with a targeted, "Welcome Back" special offer. It's a highly effective way to win back churned trialers.

82. When you're just starting out and the product direction isn't set in stone, an in-app survey is a great way to collect feedback. Ask users what they want to see next or why they signed up. It's a direct line to your customers' minds.

83. Be consistent. Seriously.
If you truly believe in what you're building, don't give up. The road is incredibly steep, and there will be moments you want to quit. Consistency is the ultimate superpower. You'll thank yourself later for not giving up too early.

84. Nail one app before chasing the next shiny idea.
It's easy to get distracted by a "better" app idea when things get tough. If you're a solo dev or a small team, this loss of focus is poison. Commit to one project and see it through. Master the entire process before you split your attention.

85. The "build it and users will come" strategy is a myth.
Launching an app is the starting line, not the finish line. Don't release your app, hope for a magical boost from the algorithm, and then immediately jump to your next project. Success comes from iteration.

86. Unless you're hiring a world-class expert who is far better than you, you should understand how to do a job before you outsource it. Mastering the basics of marketing, support, or design allows you to manage and evaluate the people you hire much more effectively.

87. Listen to your users, but don't let a single piece of feedback completely derail your product roadmap. Look for patterns. One complaint is a one-off. Twenty complaints are a pattern

88. Look at your top competitors and analyze their entire strategy. What's their onboarding flow? How do they price their app? What's their marketing strategy? You'll discover patterns and best practices that you can adapt and test for your own app.

89. Go to your competitors' social media pages. Who follows them? Who comments on their posts? These are your target customers, pre-qualified and gathered in one place. Engage with them, learn from their comments, and understand the community better.

90. Many apps have a season. Don't panic during the lows.
Your app's performance will fluctuate. There will be good months and bad months. In our first year, we panicked when performance dropped for a while.Don't make rash decisions during a downturn.

91. Ad costs, especially on Meta, can go crazy during the Black Friday and Christmas holiday season (Q4). Big brands with massive budgets flood the auction. Be mindful of this and adjust your strategy accordingly, or you might burn through cash with lower returns.

92. When optimizing your App Store listing, use tools like @tryastroapp. Don't just target the keywords with the most traffic; focus on the ones that will bring in users who are actively looking for the solution you provide. It's about quality, not just quantity.

93. At scale, localization = growth. Translating your app into a few key languages can drive huge adoption. With AI it´s easier than ever.

94. Network with other developers. It's a cheat code.

I did this way too late. Connecting with fellow developers is one of the best things you can do. You can share wins, learn from their mistakes, and avoid costly errors yourself. You're all on the same journey.

95. You don't have to reinvent the wheel. Stand on the shoulders of giants. I have a list of people I follow like @Thomasbcn, @jakemor, @steven_cravotta @adamlyttleapps, @filippkowalski @desmondhth and @seraleev who share incredible insights.

Learn from them.

96. Don't chase every "viral" marketing hack.
You'll see a tweet about a "magical" new method, you'll try to replicate it, it'll fail, and you'll get discouraged. We've been there. The truth is, not everything that shines is gold. Focus on fundamentals.

97. Design for the "empty states." What does a user see the first time they open a feature with no data in it? A blank screen is a dead end. Use that space to guide them, educate them, and encourage the action that will populate the screen.

98. Use remote config for everything. We mentioned it for a kill switch, but use it for more. Prices, promotional text, feature flags. This lets you make changes and run tests instantly without waiting for app review cycle. It's a superpower.

99. Thinking of adding dark mode from day one?
Use that time to figure out your distribution.

100. And most importantly
Celebrate the small wins.
Did you hit your first 10 subscribers? Fix a really annoying bug? Get a great review? Take a moment to acknowledge it.
The journey is a long, difficult grind, and you need to enjoy it!

[Toon Verbeek @tonnusos]

@gregisenberg 👋👋👋

[Toon Verbeek @tonnusos]

Still thinking about building this after seeing @JannisRingwald releasing React Native Godot

https://t.co/DHqH5Qicyy

[Toon Verbeek @tonnusos]

I've been thinking about a building walking game

- You spawn with 100 other random people in a randomly generated map
- As you walk irl you unlock pieces of the map
- you can build your own settlement on the map, and others can too
- if you walk enough you might encounter another player and their settlement
- endless gamification possibilities (quests, combat, etc)

As someone who walks a lot, i'd love to play this

[Toon Verbeek @tonnusos]

@filippkowalski V60 or die

[Toon Verbeek @tonnusos]

@VadimNotJustDev @betomoedano Damn @betomoedano you're everywhere these days!

[Toon Verbeek @tonnusos]

@schlimmson haha, worth a try! It can feel really rewarding and definitely keeps you 100% focused :D