The fastest $500 I’ve ever spent.
I went deep on this thing and was blown away. Here’s how it was developed and how it works:
Dyson spent 6 years, 661 engineers and 38 patents on the CameraJet.
The problem: most people miss the gaps between teeth, where plaque forms. Flossing is a separate step few do consistently.
The solution: a 100,000-pixel camera in the brush head captures 28 images per second.
An on-device AI system trained on 470,000 dental images identifies those gaps.
Within 100 milliseconds it fires a cone-shaped jet of mouthrinse into the gap.
That has to happen while the head vibrates at 58,000 movements a minute, in a dark, wet mouth.
Dyson also developed a synthetic plaque with the National University of Singapore to test the jet without running a new clinical trial after every change, and a low-foam toothpaste so the camera can see.
You brush as normal. The device handles the interdental cleaning at the same time.
Dyson’s published figures: up to 69% more plaque removed than market-leading premium electric toothbrushes in hard-to-reach areas (lab test).
In a 4-week clinical study versus a manual toothbrush, gum bleeding fell 65% vs 37%, and 74% of CameraJet users reached “healthy gums” versus 6% in the manual group.
$499 but you can’t put a price on health!
I am goin to show you how I made a total of $41,000 in 2 nights back in May and grew the page to 30k in 2 days. ALL OFF OF TIKTOK ORGANIC 🚀🚀
All 50% margins 💰
Retweet & Bookmark this 🥂
Banger thread coming 🔥🔥
@theblackmanda I’m Germain. Building https://t.co/JqQgdvPEx2.
Hermes reads your database and write and send personalized emails to each user based on their behavior, increasing retention and lowering churn
My first 6 years as a startup founder:
- Failed with 4+ startups
- Ran out of money multiple times & had $15K credit card debt
- Was rejected by Y Combinator 8 times
- Got 200+ rejections from investors
My last year as a startup founder:
- Got into a16z @speedrun & raised $18M
- Moved to SF & got O1 thanks to @tmhammer & @lighthousehq_
- Scaled Rork to #1 AI mobile app builder in the world
The average journey to a $1B company takes 10 years. I’m on year 7.
Keep building.
Introducing Rork Founder School v0.1
Learn how to build and scale consumer apps from the great founders like Paul Graham, Mark Zuckerberg, Nikita Bier, Zach Yadegari, Reid Hoffman, and more.
These people taught me a lot through essays, interviews, and talks I consumed obsessively for 7 years before starting Rork.
I took everything I learned from them and turned it into a free Duolingo-style app.
Comment for the link 👇
@atShruti Can't DM but I have built portfolios: https://t.co/xXYBgdkqv4 (previously pitched to you but rejected) https://t.co/DV9fsqzrCw
https://t.co/mjVsHlLJWv
https://t.co/Rv4qgTZpYD
My first 6 years as a startup founder:
- Started by building AI mobile apps at 20yo
- Failed with 4+ startups
- Ran out of money multiple times
- Was rejected by Y Combinator 8 times
- Had a $15k credit card debt
- Got 200+ rejections from investors
My last year as a startup founder:
- Moved to SF
- Launch Rork, AI mobile app builder, to make my year 1 self happy
- Got into a16z speedrun and raised $3M+
- Scaled Rork to millions in ARR in under a year
- Became the #1 AI mobile app builder in the world
The average journey to a $1B company takes 10 years. I’m on year 7.
Keep building.
One of the loneliest and most brutal stretches as a founder is holding unbreakable belief that you'll make it... when you have literally nothing to show for it.
2–4 years of:
- Zero traction
- Telling people "this is going to be big" and feeling like a fraud the second the words leave your mouth
- Shrinking bank account
- Friends buying houses / getting promotions while you explain to your mom why you still don't have a "real job"
The imposter voice gets loudest at 3 AM:
"Am I delusional?"
"Can I actually pull this off?"
"Am I really built for this?"
Everyone around you might doubt it quietly, but the real killer is when you start doubting yourself.
The truth: Yes, you can. Yes, you are that guy.
But belief has to come before proof.
You have to choose to back yourself hard when the scoreboard says zero, because that's exactly when most people quit.
Those empty years aren't wasted.
They're forging the version of you that can handle the win when it finally hits.
Keep showing up.
Stay obsessed.
Never ever give up.
The breakthrough comes after the doubt has tried to kill you a hundred times.
I think @claudeai is just looking at the best AI apps and ideas that are already working and then they create their own version 😅
The hold the tech, they own the cards.
Which AI app do u think they can never replicate?
Heart attack warning signs everyone should know
Heart attacks don’t always look and feel the same
>> Recognising the early signs of a heart attack can save a life - immediate action is critical
📺 Watch the animated video to hear a patient testimony & learn about:
- The signs of a first and second heart attack
- Common and less common symptoms
- How heart attacks can feel different, especially for women, older adults, & people with diabetes or kidney disease
- How immediate action is critical
- How recovery is physical AND emotional
This video was developed with cardiologists Prof. Gilles Montalescot & Prof. Marco Valgimigli and is endorsed by Fondazione Ticino Cuore & The Parole & Réaction patient group
This educational programme is supported by an Independent Educational Grant from Viatris