Choosing a fasting app: six things to check first

A fasting tracker is a simple tool: it notes when you stopped eating and tells you when your window opens. The differences between apps are mostly elsewhere. Here are six things worth checking before you commit months of records to one.

1. Can you start without an account?

A timer does not need your email address. If an app asks you to sign up and answer a long questionnaire before showing its first screen, ask what the information is for and where it goes.

2. Is there a forced trial?

Read the first screens carefully. Some apps only open after you accept a free trial that turns into a paid subscription. Look for a visible way to close the offer, and for the full price and period written in plain text.

3. Does your history stay available?

This is the question people forget. Your past fasts are your records. Check what happens to them if you stop paying: can you still see them, edit them, export them? Look at recent reviews on the App Store, where this complaint shows up quickly.

4. Can you take your data out?

An export to CSV or a backup file means you are free to leave, change phones, or keep your own archive. Without it, your log lives only as long as the app does.

5. Where is the data stored?

Fasting times, weight and notes are personal. The App Store shows a privacy summary for every app, under “App Privacy”. See whether data is collected, linked to you, or used for tracking. An app that keeps everything on the device has less to explain.

6. What does it promise?

Be wary of apps that promise results, set challenges for ever longer fasts, or reward extreme durations. A careful app reminds you that fasting is not suitable for everyone and points you to a doctor. See who should talk to a doctor before fasting.

And if you subscribe

Subscriptions bought in an iPhone app are managed by Apple. You cancel in Settings, under your name, then Subscriptions. Deleting the app does not cancel anything.

How Volvelle answers

Volvelle has no account, keeps your fasts on your iPhone, and never locks your history: past fasts stay visible, editable and exportable to CSV whatever you have bought.

Next: how to place a 16:8 eating window.

This guide is general information, not medical advice. Talk to a doctor before you start fasting.