Comparison

Vazio 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

Vazio

This app offers a minimalist approach to intermittent fasting with a focus on privacy and a clean interface. It provides tools to track fasting periods, understand metabolic stages, and view progress directly on your device's lock screen.

Highlights
  • Live Activities for Dynamic Island and Lock Screen
  • Flexible fasting presets (16:8, 18:6, 20:4, OMAD)
  • Metabolic stage tracking (Sugar Burning, Ketosis, Autophagy)
  • Privacy-focused data storage on-device/iCloud
  • Home Screen widgets for quick start/stop
  • Dark Zen interface
Features
Read full description

Vazio is the minimalist intermittent fasting companion designed for focus and privacy. Forget cluttered apps and invasive ads. Vazio respects your journey with a "Dark Zen" interface that looks stunning on your iPhone. Key Features: • Live Activities: See your remaining time directly on the Dynamic Island and Lock Screen. • Smart Timer: Flexible 16:8, 18:6, 20:4, and OMAD presets. • Metabolic Stages: Understand what's happening inside your body (Sugar Burning, Ketosis, Autophagy). • Privacy First: Your health data stays on your device and iCloud. No accounts, no tracking. • Widgets: Start or stop your fast instantly from your Home Screen. Start your journey to better metabolic health. Vazio offers in-app purchases that enhance the user experience. Auto-renewing subscriptions may be purchased to unlock additional content. Subscriptions are entirely optional and may be canceled at any time. Details are available in the Terms of Service, available here: https://vazio.app/legal/terms/

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

Vazio4 screens
Vow Fasting4 screens

Verdict

The call

The clearest difference is update cadence: Vazio at every 3 days against Vow Fasting's fortnightly. 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. Vazio sells 3 in-app purchases, starting at $0.99 per 7 days 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

Vazio ships an update every 3 days, Vow Fasting fortnightly. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

Scorecard1 real difference · 8 level
Vazio versus Vow Fasting: the parameters behind the verdict, then further details
ParameterVazioVow Fasting
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone
Requires iOS18.617.6 — better
Further details — not scored
Size10 MB13 MB
Age rating17+4+
DeveloperAndres RojasFILIP LUCCA KEJSER DAMICI

In-app purchases

3 purchases

Vazio

Subscriptions3
  • Weekly Plan$0.997 Days
  • Monthly Plan$1.991 Month
  • Annual Plan7 Days trial$12.991 Year
2 purchases

Vow Fasting

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

Questions

Is Vazio free?
Vazio 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 Vazio or Vow Fasting have ads?
Neither Vazio nor Vow Fasting shows ads.
Which is updated more often, Vazio or Vow Fasting?
Vazio ships an update every 3 days, and Vow Fasting fortnightly. Most recently, Vazio was updated on October 21, 2026 and Vow Fasting on October 25, 2026.

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