I built a WhatsApp bot to help you remember birthdays

Hacker News

I deleted facebook well over a decade ago. As a now 40 year old, I was of the generation that stored all of their data on Facebook, but the only feature I missed was birthday reminders. This became even more embarassing as friends and family started having kids. Hell if I remember your third kid's name, let alone birthday. So a couple of years ago I built a simple app to keep birthdays in check. It was... fine. Rails web app, did the basics. But I still had to go to the app to add people, worry about being logged out, just enough friction that I'd forget or not bother. So a couple of months ago I turned it into a whatsapp-only app. It now runs entirely through whatsapp (with a few webviews chucked in when needed) and it's super smooth. I can add birthdays with natural language, yeet in a few at a time, just record a voice note and get on with my day. And it sends me email reminders that save my bacon for now nearly 100 friends and family and their ruddy keeds. Anyway, thought it might be useful for others. have at it.

Visit product View on Hacker NewsApr 28, 2026

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Indie HackersFits the IH revenue-focused audience · Strong signals: started · Missing: supports, reddit linkedin, podcasting

89%89% predicted probability of success on Indie Hackers, based on ML models trained on real launch data.

best fitHighest predicted score across all platforms for this description.

Product HuntOn track for Day 1 leaderboard · Strong signals: email · Missing: mac, agents, macos

64%64% predicted probability of success on Product Hunt, based on ML models trained on real launch data.

Hacker NewsStrong engagement from HN community · Strong signals: io · Missing: https docs, excited, just released

60%60% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

TrustMRRLess likely to generate early MRR · Strong signals: month, way · Missing: mobile apps, ios, personal

50%50% predicted probability of success on TrustMRR, based on ML models trained on real launch data.

AppSumoMay struggle as an AppSumo deal · Missing: plus, platform, intuitive

31%31% predicted probability of success on AppSumo, based on ML models trained on real launch data.

Acquire.comPre-revenue stage for this audience · Missing: arr, mrr, revenue

28%28% predicted probability of success on Acquire.com, based on ML models trained on real launch data.

BetaListMay not resonate with beta-testers · Missing: web3, chat, crypto

0%0% predicted probability of success on BetaList, based on ML models trained on real launch data.

Incorrect prediction on native model

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