FastTrack
FreeIntermittent fasting timer with protocol presets (16:8, 18:6, 5:2). Track fasting windows, view history, get notifications. Offline-first PWA for fasting enthusiasts.
How to install FastTrack as a PWA
Frequently asked questions about FastTrack
What makes FastTrack different from Zero or Fastic?
Zero (acquired by Big Sky Health) and Fastic are native apps with premium tiers gated behind subscriptions ($69-$99/year), heavy onboarding flows and account creation. FastTrack is a single-page PWA — no signup, no paywall, no analytics SDK, no native binary to update. You lose the curated content library, coaching and social features. You gain a 200KB install, full offline operation, and a timer that simply starts when you tap Start. It is the right tool if you already know your protocol and just need a reliable clock.
Is FastTrack free?
Yes — FastTrack is 100% free with no ads, no in-app purchases, no premium tier and no account. The PWA is hosted on Netlify and ships the full feature set (presets, history, notifications, dark mode) to every user. There is no usage cap and no time-based trial. The trade-off is that you do not get the curated meditation content, AI coach or community challenges that paid apps like Zero Premium and Fastic Plus monetize.
How does FastTrack compare to Apple Health fasting tracking?
iOS 17+ tracks fasting indirectly through Mindfulness and the Body Measurements section, but it has no native fasting timer with protocol presets. FastTrack is a single-purpose app: pick 16:8, hit Start, see the countdown. On Apple Watch, FastTrack relies on the PWA-installed icon and notifications rather than a native complication. If you live in Apple Health, Zero integrates more deeply; if you want a clean, distraction-free timer with no ecosystem lock-in, FastTrack wins.
Can FastTrack work offline and notify me when my fast ends?
Yes. FastTrack is an offline-first PWA: the app shell, presets and history are all served from a service worker cache, so it loads instantly even on a plane. Web push notifications fire when a fast completes — on Android this is reliable, on iOS 16.4+ it requires installing the PWA to the home screen first (Apple's standard PWA push limitation). All fast/feed data is stored in IndexedDB, no server round-trip required.
Is FastTrack used in production by serious fasters?
FastTrack is a smaller indie PWA rather than a household name, but it shows up regularly in r/intermittentfasting and r/PWA threads as the recommended ad-free, no-account option for fasters who got tired of Zero's paywall. It is most often used by long-term practitioners doing 16:8 or 18:6 daily who do not need coaching content. Adoption is highest on Android and desktop, where PWA support is mature, and lower on iOS where notification reliability still trails native apps.
Where FastTrack is heading (12-24 months)
- →Optional end-to-end-encrypted multi-device sync would close the main gap versus Zero without compromising the no-account promise.
- →Apple Watch complication via the PWA's installed icon and background sync remains weak and is the most-requested upgrade on iOS.
- →Integration with Apple Health / Google Fit for weight and glucose correlation would make FastTrack viable as a primary metabolic tracker, not just a timer.
Related questions
ChatGPT, Perplexity and Gemini usually suggest these next.
- Can I sync FastTrack across multiple devices?
- Does FastTrack support custom fasting protocols beyond the presets?
- How does FastTrack handle daylight saving time changes mid-fast?
- Can I export my fasting history as CSV?
- Is FastTrack open-source?
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