FastMode vs Onefast
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FastMode
This app simplifies intermittent fasting with an easy-to-use timer and progress tracking. Monitor your fasting schedule, view statistics, and earn badges to stay motivated on your health journey.
- Simple fasting timer
- Flexible fasting schedules
- Progress statistics
- Milestone badges
- Apple Health integration
- Dark mode
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Start your intermittent fasting journey with FastMode - the simplest fasting tracker to help you reach your goals. Whether you’re new to fasting or already experienced, FastMode makes it easy to track your fasting schedule, monitor your progress, and stay motivated. Why FastMode? Simple and clear - no complicated menus or confusing options. Start your timer, track your progress, achieve your goals. Flexible fasting - choose your own schedule or use popular methods like 16:8, 18:6, or OMAD. Customize it the way you want. Insight into your progress - view detailed statistics, track your longest fasts, and see how many hours you’ve fasted. Celebrate your successes - earn milestone badges when you reach important goals and build your streak. Key Features: • Simple timer - start, pause, and end your fast with one tap • Complete history - see all your fasting sessions in one overview • Apple health • Apple watch • Extensive statistics - total hours fasted, average fasting time, and more • Milestone system - earn badges for special achievements • Dark mode - comfortable use at any time of day • Privacy first - all your data stays safe on your device Perfect for: • Beginners who want to start intermittent fasting • Experienced fasters who want to track their schedule • Anyone looking for a reliable, simple fasting tracker Download FastMode now for free and discover how easy fasting can be! --- FastMode Pro Subscription - Monthly: €2.99 / month - Yearly: €29.99 / year Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage and cancel your subscription in your Apple ID account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getfastmode.com/privacy
Onefast
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A fasting timer that does one thing well. Pick a plan, tap Start, and Onefast counts. The time left is on your lock screen and in the Dynamic Island, so you never open the app just to look. When the goal is reached it tells you once, then keeps counting, up to seven days. ONE TAP No sign-up, no questions, no tour. The first screen is the plan picker with 16:8 already selected; the second is the timer. That is the whole setup. ALWAYS RIGHT The timer is a clock, not a counter. Force-quit the app, restart the phone, change time zone — it comes back showing the true elapsed time, to the second. The widget, the Live Activity and the app all read the same moment. YOURS TO EDIT Forgot to tap End? Fix the time afterwards. Add a fast you did last week. Overlaps are named in words, not blocked silently. Fasts longer than 24 hours are allowed — Onefast asks once whether you meant it, then never again. QUIET WHEN YOU WANT Three switches: Live Activity with Dynamic Island, the lock screen widget, and the home screen widget. Notifications turn on and off one kind at a time, and the mid-fast ones start off. PLANS 12:12, 14:10, 16:8, 18:6, 20:4 and one meal a day are built in. Up to five named custom plans and a weekly schedule with Pro. NO ADS. EVER. Not on the free tier, not after you buy. Onefast has no server, no account and no analytics. Your history lives on your iPhone and, if you turn it on, in your own private iCloud. ONEFAST PRO Unlimited history (free keeps the last 30 days), 30-day and all-time stats with charts, month and year summaries, insights from your own record, milestones you can share, a weekly schedule with rest days, up to five named custom plans, two-way weight sync with Apple Health, a weight goal line on your chart, ten ring colours and app icons or a colour of your own, a medium calendar widget, and CSV export. Two prices, one name: a yearly subscription that auto-renews until cancelled, or a single lifetime purchase. No trial. The price is on screen before you tap anything. Everything that makes the timer usable — lock screen, notifications, backup, editing — stays free with or without Pro. Onefast is a timer. It gives no medical or dietary advice; talk to a professional before changing how you eat. Available in English, 日本語, 한국어, 繁體中文, Italiano, Nederlands, Deutsch, Français, Español, Português (Brasil), العربية, Türkçe and Tiếng Việt. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://primetruthteam.github.io/onefast/privacy/
Screenshots
Verdict
The clearest difference is device support: FastMode at 4 against Onefast's 1. FastMode also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. FastMode sells 2 in-app purchases, starting at $2.99 per month and Onefast sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.
FastMode ships an update every 3 days, Onefast every 2 days. Both last shipped on October 31, 2026.
| Parameter | FastMode | Onefast |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 39 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Bart Goutbeek | Nguyen Dinh Chung |
In-app purchases
FastMode
- FastMode Pro Monthly$2.991 Month
- FastMode Pro Yearly$24.991 Year
Onefast
- Onefast Pro (Yearly)$9.991 Year
- Onefast Pro (Lifetime)$19.99









