Karla Castro

Founder @expensecanary @expenvo_app @vibelocked @momiga_events

[Karla Castro @eukarlacastro]

Day 8. Wrote my first ever guest post today, for a Canadian money blog, and sent it off this afternoon. I also said no to a paid placement offer. I want to see how far slow, honest growth can go first. Still one free trial and zero paying users. Small steps, but they are mine.

[Karla Castro @eukarlacastro]

VibeLocked Day 3: I shipped 3 Supabase guides, on cascade deletes, error messages that leak hidden rows, and signed upload URLs. Since launch: 366 visitors, 2 scans, 0 Pro subscribers, $0 revenue. Lesson: Indie Hackers blocks launch posts from new accounts, so I comment first.

[Karla Castro @eukarlacastro]

1/ VibeLocked started with a question: how often do apps built with AI tools ship with the door open? We scanned 2,511 live vibe-coded apps across nine platforms to find out.

[Karla Castro @eukarlacastro]

VibeLocked Day 2: I shipped 2 Supabase guides, on upsert RLS errors and recovering deleted rows. Since launch: 346 page views, 2 scans, 0 Pro subscribers, $0 revenue. Lesson: guides alone do not bring readers. Views fell to about 5 a day, so distribution is my next fix.

[Karla Castro @eukarlacastro]

Expenvo Day 7: The first Expenvo newsletter went out this morning. It reached exactly one confirmed subscriber, and I am happy to start there. I also shipped four more bank and credit union fee guides. No new signups today, still 4 users and 0 paying.

[Karla Castro @eukarlacastro]

Every month my husband and I sat down with our bank and credit card statements and a spreadsheet, trying to figure out what each cryptic line was, which subscriptions we forgot, and which fees we shouldn't be paying. So I built a second app for it, and this one never asks for your bank login. The story so far 🧵

[Karla Castro @eukarlacastro]

Expenvo Day 6: Google now has 644 Expenvo pages indexed, up from 246 last Thursday. Shipped 8 more bank fee guides today, plus one on what to do when a free trial turns into a charge. 0 new signups today. Issue 1 of the newsletter goes out tomorrow.

[Karla Castro @eukarlacastro]

@moran_tegan2 Start with your bank and Apple or Google Play bill history. That is where forgotten ones hide. Expense Canary finds those leaks across all your banks so you do not need a full audit by hand. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@antillaview @hearstcmg Ask Hearst again in writing and dispute the charge with your card if they keep billing. Expense Canary flags subscriptions that keep charging after you cancel, across all your banks. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@shadow_of_neo Check your bank statement for both charges and dispute the duplicate with X support. Expense Canary watches for surprise subscription charges and bank fees across all your accounts so they do not blend in. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@citazworld Check Settings > Apple ID > Subscriptions, or https://t.co/VVt7QxKj0t if it is not yours. Expense Canary flags mystery charges and forgotten subscriptions across all your banks before they pile up. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@MsPassionR @WellsFargo Call Wells Fargo again and ask for a courtesy waiver. They reverse first time overdraft fees often if you push. Expense Canary flags bank fees and surprise charges across all your banks so the next one is harder to miss. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@luk0nyx Ask for a refund today while it is still fresh. Most companies give one if you barely used it. Expense Canary spots free trials turning paid and forgotten subscriptions across all your banks. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@mxcaulfi Brutal timing. Ask them for a refund, most will give one if you haven't used it. Expense Canary watches for leaks like this, forgotten subs and surprise fees, across all your banks. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@WPXI The hard part is finding them when they're spread over several cards and banks. Expense Canary scans across all of them for forgotten subscriptions, hidden bank fees and unusual charges. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@KiXMyers You can ask Apple for a refund at https://t.co/VVt7QxKj0t, and unpaid subs usually clear after that. Expense Canary catches subscriptions you forgot about like this across your banks before they pile up. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@winedrunkenaunt Ask for a refund today, the sooner you ask the better it goes. Then let Expense Canary watch for the next one. It finds forgotten subscriptions, hidden bank fees and unusual charges across all your banks. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@1uvskool Amazon will usually refund Prime if you haven't used the benefits since it renewed. Go to Your Account > Prime > End membership. Expense Canary flags leaks like this across your banks so they don't slip by. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@madelynnhartley Hallmark marathon it is 😄 For next time: Expense Canary spots trials turning paid and subscriptions you forgot about across all your banks, so the charge doesn't surprise you. https://t.co/qbvSl8BeiC

[Karla Castro @eukarlacastro]

@guptankit27 Expense Canary. It finds the money leaks most people miss, like hidden bank fees, forgotten subscriptions and strange charges, across all your banks. iOS and Android. https://t.co/gzBNgw93hQ

[Karla Castro @eukarlacastro]

@sambuild1 Would love to be one of the 30! Expense Canary catches bank fees you didn't know you were paying and subscriptions you forgot, across all your banks. iOS and Android, US and Canada. https://t.co/gzBNgw93hQ

[Karla Castro @eukarlacastro]

@buildaswego Right now: Expense Canary, an app that catches the fees and forgotten subscriptions quietly draining your accounts, across all your banks. iOS and Android, US and Canada. https://t.co/gzBNgw93hQ

[Karla Castro @eukarlacastro]

@Key_Coder_Remot iOS and Android app: Expense Canary. It spots hidden bank fees, forgotten subscriptions and unusual charges across all your banks. US and Canada. https://t.co/gzBNgw93hQ

[Karla Castro @eukarlacastro]

@archita_su64628 📱 Mobile here! Expense Canary catches bank fees you didn't know about and subscriptions you forgot, across all your banks. US and Canada. Happy to check out what everyone else is building too. https://t.co/gzBNgw93hQ