Comparison

TimeFast vs Fasting Timer by TrainerDay

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

Head to head
About

TimeFast

Features
Read full description

TimeFast is the intermittent fasting timer that respects your privacy. Start your fast with one tap, watch a beautiful progress ring track every minute, and see exactly which fasting phase you're in. No account needed, no subscription, no data ever leaves your device. Whether you follow 16:8, OMAD, or your own schedule — TimeFast adapts to you, not the other way around. FASTING PROTOCOLS FOR EVERY GOAL - 6 proven protocols: 12:12, 14:10, 16:8, 18:6, 20:4, and OMAD (23:1) - Create custom fasting plans with any duration from 1 to 72 hours - Difficulty indicators from beginner to expert to help you progress REAL-TIME FASTING TRACKER - Animated progress ring showing elapsed and remaining time - Live countdown timer with hours, minutes, and optional seconds - Fasting phase timeline shows your body's stages: fat burning (12h), ketosis (16h), autophagy (24h) - Percentage-based progress at a glance - Forgot to start? Adjust your start time retroactively FASTING JOURNAL & SESSION DETAILS - Detailed breakdown for every completed fast - See which metabolic phases you reached - Add personal notes and reflections to any session - Track your achieved percentage and duration STREAKS, HISTORY & STATISTICS - Daily streak counter to build your fasting habit - Full session history with interactive calendar view - Success rate, average fasting duration, and total hours tracked - Visual streak badge to keep your motivation high HOME SCREEN & LOCK SCREEN WIDGETS - Small and medium Home Screen widgets for at-a-glance status - Circular and rectangular Lock Screen widgets for quick checks - Live progress updates while fasting - Streak display when you're in your eating window SMART REMINDERS - Get notified when your fast is complete — even while the app is open - Set a daily reminder to start your fast at the time that works for you DESIGNED WITH LIQUID GLASS - Built natively for iOS 26 with Apple's Liquid Glass design - Refined dark-mode interface with translucent glass surfaces - No account required — works immediately out of the box - One-time purchase — no subscription, yours forever PRIVACY BY DESIGN TimeFast stores all data exclusively on your device. No data is collected, transmitted, or shared with anyone. Zero analytics, zero third-party SDKs, zero server connections. Your fasting data belongs to you alone. Available in English and German. All interface elements adapt to your system language.

About

Fasting Timer by TrainerDay

This app simplifies intermittent fasting with a one-tap start and customizable durations. Track your progress visually and review your fasting history. It's designed for easy habit building without complex features.

Highlights
  • One-tap fast start
  • Customizable fasting durations
  • Flexible start times
  • Visual progress tracking
  • Fasting history
  • Shareable results
Features
Read full description

Fasting Timer is a simple, no-fuss intermittent fasting tracker designed to help you build healthy fasting habits. It's the ultimate app for ADF fasters. Each day when you start your fast. It's just one click, even when you forget to start it at your normal fasting time. Features: • One-tap start - Begin your fast instantly • Customizable durations - Set your preferred fasting window (12, 14, 16, 18, 20+ hours) • Flexible start times - Start now or schedule for later • Visual progress - See your fasting progress at a glance • History tracking - Review your completed fasts • Share your achievements - Export and share your fasting results Whether you're doing 16:8, 18:6, or any other intermittent fasting schedule, this app makes it easy to track your fasting windows without complicated setup or unnecessary features. Free and simple. Start fasting today.

Screenshots

TimeFast4 screens
Fasting Timer by TrainerDay4 screens

Verdict

The call

The clearest difference is price: Fasting Timer by TrainerDay at Free against TimeFast's $6.99. Fasting Timer by TrainerDay also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.2). On 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

CostPrice · In-app purchases · Ads · Monetization

Fasting Timer by TrainerDay is free to download; TimeFast costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences · 7 level
TimeFast versus Fasting Timer by TrainerDay: the parameters behind the verdict, then further details
ParameterTimeFastFasting Timer by TrainerDay
Price$6.99Free — better
Rating—5.0 (12 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—12 — better
Update frequencyDaily—
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.215.1 — better
Further details — not scored
Size1 MB30 MB
Age rating17+17+
DeveloperKilowatt MediaTrainerDay Inc

In-app purchases

None

TimeFast

No in-app purchases

None

Fasting Timer by TrainerDay

No in-app purchases

Questions

Is TimeFast free?
TimeFast costs $6.99, with no in-app purchases.
Is Fasting Timer by TrainerDay free?
Fasting Timer by TrainerDay is free to download, with no in-app purchases.
Do TimeFast or Fasting Timer by TrainerDay have ads?
Neither TimeFast nor Fasting Timer by TrainerDay shows ads.

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