Vazio vs The Fast
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
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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/
The Fast
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Fasting, at your pace. Choose a duration and start. A slowly moving record marks the time, with elapsed time and time remaining always within reach. ON YOUR HOME SCREEN Small and medium widgets keep your fast in view. See elapsed time at a glance, or use the larger widget for the full record, progress and time remaining. A MONTH, ON RECORD Browse your fasting history in a simple calendar. Finished goals retain their record color. Early endings appear in gray. Open any day to see each fast. YOURS TO SHARE Share one fast or your whole month as a single image. Include record details and exact times when you want to. LIGHT BY DESIGN Use the timer, history and widgets without an account. Your records stay on your device unless you choose to sync them. Optional Apple, Google or email sign-in lets you keep records across devices. Free to use. No ads. The Fast records time. It does not provide medical or dietary advice.
Screenshots
Verdict
The clearest difference is in-app purchases: The Fast at none against Vazio's 3. The Fast also leads on update cadence (daily vs every 3 days) and iOS requirement (16.4 vs 18.6). On price, ads 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. The Fast asks for nothing beyond the download.
Vazio ships an update every 3 days, The Fast daily. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.
| Parameter | Vazio | The Fast |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 days | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 10 MB | 31 MB |
| Age rating | 17+ | 4+ |
| Developer | Andres Rojas | Prime Adventure LLC |
In-app purchases
Vazio
- Weekly Plan$0.997 Days
- Monthly Plan$1.991 Month
- Annual Plan7 Days trial$12.991 Year
The Fast
No in-app purchases





