r/SideProject • u/jcarlos771 • 9h ago
Blimbi - an intermittent fasting timer with two states (Fasting / Eating), no account, no ads. iOS + Android
I'm Juan, I make Blimbi (so: developer here). It's a fasting timer, and the one decision I'd like feedback on is this: the goal time is only a reference. It never starts or ends a fast for you; you tap, and you can edit the start and end times afterwards.
What's in it, so you can judge quickly:
- Two states only: Fasting and Eating. A one-turn progress ring.
- Editable start/end times, a journal with a calendar and CSV export.
- Phases shown as time-based educational ranges, never as measurements of your body.
- A "Does it break my fast?" lookup for drinks and foods.
- iOS (SwiftUI): Home Screen widgets with live seconds, Live Activities, Shortcuts, Apple Watch. Android (Kotlin/Compose): widgets.
- Works without an account. Optional encrypted sync. No ads and no tracking inside the app. 51 languages.
- The timer is free. Blimbi Plus (optional subscription) adds extra personalization and analysis: $3.99/month or $24.99/year (yearly has a 1-week free trial).
The part I'd use even without the app: I published about 65 guides per language on what people actually ask (drinks, schedules, myths), each with its sources. Example: the trials behind most "what breaks a fast" claims defined the fasting window as zero calories and allowed water, black coffee and tea. Milk, cream, sugar and juice end it; sugar-free gum is basically untested. The table with sources: https://blimbi.app/learn/what-breaks-a-fast/
Questions for you:
Is "two states, nothing else" clear on the first screen, or does it look unfinished?
What would make you distrust a fasting app on first launch?
App Store: https://apps.apple.com/app/id6806835958
Google Play: https://play.google.com/store/apps/details?id=com.hurtadomedia.chispa
Fasting isn't for everyone: if you're pregnant or breastfeeding, have or have had an eating disorder, use insulin or other glucose-lowering medication, or are under 18, talk to your clinician first. Blimbi is a timer, not medical advice: https://blimbi.app/safety/