Calorie Calculator vs Onefast
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calorie Calculator
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Calorie Calculator: TDEE helps you calculate your daily calorie needs in seconds. Get a personalized plan to lose fat, maintain weight, or gain muscle — no signup required. KEY FEATURES • Calculate your TDEE (Total Daily Energy Expenditure) • Instant daily calorie target • Weight goals: lose fat, maintain, gain muscle • Multiple plans: 0.5 kg / 1 kg per week • Macro breakdown: protein, carbs, fat • Clean and simple interface • Works offline, no account needed Plan smarter. Stay consistent. Reach your fitness goals faster.
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 ads: Onefast at none against Calorie Calculator's shown. Onefast also leads on update cadence (every 2 days vs monthly). On price, in-app purchases, device support and iOS requirement 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. Calorie Calculator 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.
Calorie Calculator ships an update monthly, Onefast every 2 days. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.
| Parameter | Calorie Calculator | Onefast |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Do Tri | Nguyen Dinh Chung |
In-app purchases
Calorie Calculator
- Remove Ads$4.99
Onefast
- Onefast Pro (Yearly)$9.991 Year
- Onefast Pro (Lifetime)$19.99
Questions
Is Calorie Calculator free?
Is Onefast free?
Do Calorie Calculator or Onefast have ads?
Which is updated more often, Calorie Calculator or Onefast?
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