Fasting Tracker & 16 vs Onefast
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fasting Tracker & 16
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Fasting Tracker & 16:8 Timer app is a one-tap intermittent fasting timer, kept deliberately simple. Pick your fasting window — 12:12, 14:10, 16:8, 18:6 or 20:4 — and start your fast with a single tap. The countdown lives on your lock screen and in the Dynamic Island, so you always know where you stand without opening the app. WHAT YOU GET, FREE FOREVER • The timer with every fasting window, unlimited • Lock-screen countdown (Live Activity) • The current fasting phase, explained in plain words • Daily streak and week view • Water and weight logging, one-handed PREMIUM+ (optional subscription) • Full fasting history and statistics • Phase-by-phase insight detail • Water and weight charts • Widget options HONEST BY DESIGN • No account — there is nothing to sign up for • No ads, no third-party analytics • Works fully offline • Your fasts, water and weight stay on your phone. App has no servers. • Both subscription prices are shown side by side. No free trial, no surprises. A note on health: This app is an educational tool, not medical advice. Fasting is not suitable for everyone — talk to your doctor first, and do not fast if you are pregnant, nursing, underage or have a history of eating disorders. Terms: https://fastpace.pages.dev/terms.html Privacy: https://fastpace.pages.dev/privacy.html
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
Fasting Tracker & 16 and Onefast are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Fasting Tracker & 16 sells 2 in-app purchases, starting at $6.99 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.
| Parameter | Fasting Tracker & 16 | Onefast |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 9 MB | 4 MB |
| Age rating | 12+ | 4+ |
| Developer | Ali Dinc | Nguyen Dinh Chung |
In-app purchases
Fasting Tracker & 16
- FastPace+ Monthly$6.991 Month
- FastPace+ Yearly$24.991 Year
Onefast
- Onefast Pro (Yearly)$9.991 Year
- Onefast Pro (Lifetime)$19.99





