Zero Fasting App Alternative: What to Check Before You Switch
Long-time Zero users are looking for a new fasting tracker. Here is a practical checklist for choosing one -- accounts, data ownership, history import, and honest billing -- so the next app does not repeat the same problems.
Zero was many people's first fasting tracker, and for years it did the job well. But if you are reading this, you have probably felt the recent shift: many long-time users report being unable to sign in after the redesign, seeing years of fasting history disappear from their accounts, and finding features they relied on moved behind a subscription. Whatever the reasons behind those changes, the practical question is the same: what should the next tracker do differently?
Here is the checklist worth applying to any fasting app before you commit to it -- and to be transparent, we make FastBreak, one of the apps you might consider, so we will show how it answers each point.
1. It should work without an account
Most of the painful stories from switching users share one root cause: the data lived behind a login. When the login breaks -- a password reset loop, a migration bug, a server outage -- the history goes with it, even though it was always sitting on the user's own phone.
An account is justified when an app genuinely needs a server: social features, cloud coaching, cross-platform sync. A fasting timer does not. Look for a tracker where the core experience never asks for your email.
FastBreak has no registration at all. There is no login to break, because there is nothing to log into.
2. Your data should live on your device
Ask where the history is actually stored. If the answer is "on our servers", your streaks depend on that company's uptime, business model, and migration discipline. If the answer is "on your phone, backed up with your own iCloud", the app can disappear tomorrow and your history survives.
On-device storage also settles the privacy question: weight, eating patterns, and progress photos are health data. The cleanest data policy is not a promise about how carefully a server guards them -- it is not sending them to a server at all.
FastBreak keeps everything on the device, syncs through your private iCloud, and its AI coach runs on-device too. Nothing about your body ever reaches us; there is no us to reach.
3. It should import your old history
Years of fasting history are a real asset -- streaks, patterns, the record of what worked. A tracker that starts you from zero (no pun intended) is asking you to abandon that.
Before switching, export your data from the old app. Zero provides a full export as JSON files -- we wrote a step-by-step guide to exporting your Zero data, including the email password and the ZIP part.
Then check the new app can actually read it. FastBreak imports CSV and JSON exports directly: Settings → Import fasting history, pick the file, and your completed fasts are merged into your history without touching anything you have already logged.
4. Billing should go through the App Store, full stop
Read recent one-star reviews of the big fasting apps and one theme dominates: subscriptions that keep charging after cancellation, cancellation flows hidden on websites, fees that do not show up in the iOS subscription list. That pattern almost always traces back to billing that happens outside Apple's system.
The fix is simple: only pay through the App Store. An App Store subscription shows up in Settings on your iPhone and cancels in two taps, and no one can charge you after that. If an app pushes you toward a web checkout for a mobile subscription, treat it as a warning sign.
Everything in FastBreak is billed by Apple through your Apple ID. Canceling works the way iOS subscriptions always work, and the free tier -- the full fasting timer with zones, history, and stats -- stays free.
5. The core should be free and quiet
A fasting timer that interrupts your fast to sell you things gets deleted by week two. Check what the free tier actually includes, and whether the app respects a "no" -- one paywall visit should not turn into daily full-screen offers.
The bottom line
You do not need to be loyal to any app -- including ours. You need a tracker that cannot lose your history to a login bug, cannot quietly charge you outside the App Store, and does not hold your own data hostage. Export your history first, make sure the next app can import it and works without an account, and the switch costs you nothing but five minutes.
Ready to start fasting?
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