Fastic is a feature-rich fasting and nutrition app, but much of it sits behind the Fastic Plus subscription and the full app asks you to create an account. If you want a focused fasting timer that's free to fast with and skips the sign-up, IF24 is a simple alternative. IF24 Pro is an optional one-time purchase for advanced extras; nothing you need to run a fast is behind it.
IF24 vs Fastic at a glance
| IF24 | Fastic | |
|---|---|---|
| Price | Free; IF24 Pro optional (one-time, no subscription) | Freemium + Fastic Plus subscription |
| Account required | No | Sign-up for the full app |
| Data collected | None (App Store: “Data Not Collected”) | See its App Store privacy label |
| Metabolic phase estimates (fat burning, ketosis, autophagy) | Yes, free | Body status features, partly premium |
| Schedules | 14:10, 16:8, 18:6, 20:4 free; custom length with Pro | Multiple presets + custom |
| Platform | iPhone (iOS) | iOS, Android |
Why pick IF24
If you mainly want a free, private fasting timer that shows estimated fat burning, ketosis and autophagy phases as your fast progresses, IF24 does that without a subscription or account. Fastic is worth it if you want its broader nutrition and coaching ecosystem.
IF24 is free to download; IF24 Pro is an optional one-time purchase for advanced extras. Comparison last updated August 2026 and based on publicly available information; competitor features and pricing may change — check the respective app's official page for the latest. Fastic is a trademark of its owner, used here only to identify the app for comparison. IF24 is an independent app and is not affiliated with or endorsed by Fastic. Metabolic phases shown by IF24 are estimates based on typical fasting timing, not measurements, and are not medical advice.