Comparison

Intermittent Fasting vs Vow Fasting

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

Head to head
About

Intermittent Fasting

This app helps you track your intermittent fasting journey with a simple, private interface. It offers a free tier with essential tracking tools and an optional one-time purchase for advanced features like water and protein tracking, and deeper insights. Your data remains on your device for maximum privacy.

Highlights
  • Intermittent fasting timer
  • Metabolic phase tracking
  • Water and protein tracking
  • Home and Lock Screen widgets
  • Apple Watch integration
  • On-device AI insights
  • Private data storage
Features
Read full description

Fasted is a calm, private intermittent-fasting tracker for iPhone, iPad and Apple Watch. Start a fast in one tap, follow your metabolic phases, and build a streak — no account, no analytics, no ads. Now made for iPad: your timer and your stats side by side, in landscape or portrait, with Split View and keyboard shortcuts. On iPhone, turn it sideways — landscape works too. The fasting basics are free, forever. When you want more, unlock Fasted Pro with a single one-time purchase. Buy once, own forever. No subscription, ever. WHAT'S FREE • Fasting timer — start now, start from your last meal, end, or cancel • All 8 preset plans, plus a custom plan • Metabolic phase tracking • iPhone, iPad and Apple Watch, always in sync • Apple Watch fasting page and complication • Fasting widgets for your Home and Lock Screen • Goal-reached and fasting-window reminders • Current streak, this-week hours, and your recent history • Light, dark, and system themes WHAT FASTED PRO UNLOCKS • Water tracking — goal, one-tap buttons you can customise, pace, reminders, on Watch and widgets • Protein tracking — set a daily goal and quick-add in a tap; rings on iPhone and Watch • Deeper stats — longest streak, 30-day adherence, weekly trends, water and protein streaks, 14-day phase history • On-device AI weekly insight • Phase-transition notifications • Live Activity and Dynamic Island • Siri, Shortcuts, and App Intents Buy once. Own forever. No subscription. ALREADY BOUGHT FASTED? If you previously purchased Fasted, you already own Pro — it unlocks automatically, free, the moment you update. Thank you for being an early supporter. PRIVATE BY DESIGN No account. No analytics. No tracking. Your fasting, water, and protein data stay on your device and sync only through your private iCloud. Optional Apple Health integration for fasts, water and dietary protein, read and write, with your permission. Protein tracking is deliberately simple — a daily goal and quick-add, like the water tracker. No barcode scanning, no calorie or macro counting.

About

Vow Fasting

Read full description

Vow is a refined intermittent fasting tracker built for calm daily discipline. Start a fast, follow your progress, and understand each stage as your body moves through metabolic phases like digesting, fat burning, ketosis, and autophagy. Vow keeps fasting focused with a precise timer, clear progress, thoughtful reminders, and a minimal dark design made for daily practice. Whether you follow 16:8, 18:6, 20:4, 24-hour fasts, or custom fasting goals, Vow helps you track every session with clarity. FEATURES • Elegant fasting timer with real-time progress • Intermittent fasting plans including 16:8, 18:6, 20:4, and 24h • Metabolic phase tracking from digesting to fat burning, ketosis, and autophagy • Fasting history, streaks, and weekly insights • Custom and extended fasting durations • Goal reminders and phase update notifications • Minimal dark interface with premium themes • Home Screen widgets and Live Activity support Vow Pro Unlock extended fasting protocols, custom durations, premium themes, advanced insights, and premium widgets. Vow is not medical advice. If you have a medical condition, are pregnant, under 18, or have a history of eating disorders, consult a healthcare professional before fasting. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://vowfasting.com/privacy

Screenshots

Intermittent Fasting4 screens
Vow Fasting4 screens

Verdict

The call

The clearest difference is device support: Intermittent Fasting at 3 against Vow Fasting's 1. Vow Fasting's advantage is iOS requirement (17.6 vs 26.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Intermittent Fasting sells 1 one-off in-app purchase and Vow Fasting sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Intermittent Fasting ships an update every 3 weeks, Vow Fasting fortnightly. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 8 level
Intermittent Fasting versus Vow Fasting: the parameters behind the verdict, then further details
ParameterIntermittent FastingVow Fasting
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS26.017.6 — better
Further details — not scored
Size7 MB13 MB
Age rating4+4+
DeveloperCliapisFILIP LUCCA KEJSER DAMICI

In-app purchases

1 purchases

Intermittent Fasting

One-time1
  • Fasted Pro$4.99
2 purchases

Vow Fasting

Subscriptions2
  • Vow Pro Monthly$4.991 Month
  • Vow Pro Annual$39.991 Year

Questions

Is Intermittent Fasting free?
Intermittent Fasting is free to download, with in-app purchases available.
Is Vow Fasting free?
Vow Fasting is free to download, with in-app purchases available.
Do Intermittent Fasting or Vow Fasting have ads?
Neither Intermittent Fasting nor Vow Fasting shows ads.
Which is updated more often, Intermittent Fasting or Vow Fasting?
Intermittent Fasting ships an update every 3 weeks, and Vow Fasting fortnightly. Most recently, Intermittent Fasting was updated on October 24, 2026 and Vow Fasting on October 6, 2026.

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