Vazio vs Vow Fasting
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide full description
Vazio is a private, ad-free intermittent fasting timer for people who want a calmer way to follow their routine. Start a 16:8, 18:6, 20:4, OMAD, or custom fast and see the time that matters at a glance. Stay in rhythm with daily reminders, Home Screen widgets, and a clean native iPhone experience designed for focus—not clutter. FAST WITH CLARITY • Flexible Timer: Choose 16:8, 18:6, 20:4, OMAD, or a custom fasting window. • Daily Reminders: Keep your preferred start time on track and begin a fast from the notification. • Widgets: Start or stop a fast quickly from your Home Screen. • History That Fits Real Life: Log a missed fast or edit a session when plans change. • Metabolic Timeline: Explore the stages of your fasting timeline as it progresses. VAZIO PRO Unlock Live Activities for your Lock Screen and Dynamic Island, unlimited history, advanced progress insights, Health app weight trends, and custom themes. Vazio is free to download. Optional annual Vazio Pro subscriptions unlock premium features and can be managed or canceled in your Apple ID account settings. Your privacy matters. Review Vazio's App Privacy details and Privacy Policy in the App Store for the current data-handling information. Details are available in the Terms of Service, available here: https://vazio.app/legal/terms/
Vow Fasting
Read full descriptionHide 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
Verdict
The clearest difference is update cadence: Vazio at every 4 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
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.
Vazio ships an update every 4 days, Vow Fasting fortnightly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | Vazio | Vow Fasting |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.6 | 17.6 — better |
| Further details — not scored | ||
| Size | 10 MB | 13 MB |
| Age rating | 17+ | 4+ |
| Developer | Andres Rojas | FILIP LUCCA KEJSER DAMICI |
In-app purchases
Vazio
- Weekly Plan$0.997 Days
- Monthly Plan$1.991 Month
- Annual Plan7 Days trial$12.991 Year
Vow Fasting
- Vow Pro Monthly$4.991 Month
- Vow Pro Annual$39.991 Year









