FastZen vs FastDial
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
FastZen
This app helps you manage your fasting schedule with customizable timers and reminders. It offers a recurring weekly routine, a timer that remembers your progress, and a clear view of your active fast. Review your history and track your streaks, all while keeping your data private on your device.
- Customizable fasting schedules
- Recurring weekly routine setup
- Live Activities for active fast tracking
- Detailed fasting history and streaks
- No account, ads, or server sync
- Custom Week one-time purchase
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FastZen tracks your fast and lets you move one date without rewriting your weekly routine. Dinner running late? Adjust that day and keep the rest of your week. Preview the next 7 days, including start times, planned finishes and rest days. β’ Start a 16:8, 18:6, 20:4 or OMAD (23-hour) fast. β’ Set a custom duration from 1 to 48 hours. β’ See elapsed time, remaining time and your planned finish. β’ Review completed sessions and correct their times. β’ Repeat one start time on the weekdays you choose. Your active session stays saved when you close the app. No account, no ads and no server sync. The widget puts your fast on the Home Screen. On iPhone, a Live Activity shows your session on the Lock Screen for up to 8 hours, the iOS limit. The session stays saved in the app. FastZen is a tracking tool, not medical advice or a promise of weight loss. Custom Week is a one-time purchase with no subscription. It unlocks a separate plan and start time for each weekday, rest days, and changes to a single date without changing your recurring week. People who used FastZen before version 1.1.0 keep that access without paying.
FastDial
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FastDial is a fasting timer that lives on your Lock Screen. Tap once to start, then just raise your phone. You never have to keep the app open. Your progress sits in the Live Activity, the Dynamic Island and Home Screen widgets. The timer is derived from your start time alone, so force-quitting the app or rebooting the phone never loses a second. EVERYTHING, FOR EVERYONE - Big dial timer: a progress ring with a ticking clock. Past your goal, a second ring keeps counting the extra time instead of cutting you off - Five built-in schedules β 13:11, 16:8, 18:6, 20:4, OMAD β plus a custom 1-72 hour plan - Lock Screen Live Activity and Dynamic Island - Home Screen widgets (small and medium): progress while fasting, streak while you are not - A local notification when you reach your goal. Logged the wrong start time? Fix it, and the reminder reschedules itself - Log your weight when you finish; sync both ways with the Health app, duplicates removed - Stats: current streak, 7-day average, a fasting bar chart, a weight trend and an editable history - Your full history is always there, and exports to CSV in one tap ABOUT THE ADS Every feature is free. Nothing is held back behind a "full version". There is one banner at the bottom of the screen; if you would rather not see it, a one-time purchase removes it. That purchase removes the banner only β it does not unlock anything. ABOUT YOUR PRIVACY No account, no server. Your fasting log and your weight stay on this iPhone and in your Health app, and are never uploaded. Every feature works offline; only the banner needs a connection. This app does not track you and never asks for ad tracking permission. Health data is used to draw your own weight trend, never for advertising. Fasting schedules describe time structure only and are not medical advice. If you have a health condition, talk to a professional first.
Screenshots
Verdict
The clearest difference is ads: FastZen at none against FastDial's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. FastZen sells 4 one-off in-app purchases and FastDial sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | FastZen | FastDial |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Weekly | β |
| Ads | No β better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | β |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details β not scored | ||
| Size | 2 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Benjamin Dupin | δΈ½δ½³ ζ½ |
In-app purchases
FastZen
- Coffee$0.99
- Thanks$2.99
- Support development$4.99
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- FastZen Custom Week$5.99
FastDial
- Remove Ads$0.99









