Comparison

WeightGlance vs Onefast

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

WeightGlance

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Record your weight daily and see at a glance how it changed during the last 7 days and the last couple of weeks. WeightGlance synchronizes itself with the Health app. So anything you record in WeightGlance will be available to other apps synchronizing with the Health app and WeightGlance will be able to display any changes to your weight stored by other apps in the Health app. WeightGlance does not send any of your data or data about you anywhere. That data stays safe and personal on your device in the Health app.

About

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

WeightGlance4 screens
Onefast4 screens

Verdict

The call

The clearest difference is update cadence: Onefast at every 2 days against WeightGlance's every 10 months. Onefast also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. WeightGlance sells 1 one-off in-app purchase 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.

UpkeepUpdate frequency

WeightGlance ships an update every 10 months, Onefast every 2 days. The most recent releases landed on October 15, 2026 and October 29, 2026 respectively.

Scorecard2 real differences · 4 level
WeightGlance versus Onefast: the parameters behind the verdict, then further details
ParameterWeightGlanceOnefast
PriceFreeFree
Update frequencyEvery 10 monthsEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad — betteriPhone
Requires iOS26.017.0 — better
Further details — not scored
Size1 MB4 MB
Age rating4+4+
DeveloperRobert BeegerNguyen Dinh Chung

In-app purchases

1 purchases

WeightGlance

One-time1
  • Tip$0.99
2 purchases

Onefast

Subscriptions1
  • Onefast Pro (Yearly)$9.991 Year
One-time1
  • Onefast Pro (Lifetime)$19.99

Questions

Is WeightGlance free?
WeightGlance is free to download, with in-app purchases available.
Is Onefast free?
Onefast is free to download, with in-app purchases available.
Do WeightGlance or Onefast have ads?
Neither WeightGlance nor Onefast shows ads.
Which is updated more often, WeightGlance or Onefast?
WeightGlance ships an update every 10 months, and Onefast every 2 days. Most recently, WeightGlance was updated on October 15, 2026 and Onefast on October 29, 2026.

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