# Vazio vs The Fast

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.

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.

## The numbers

| Metric | Vazio | The Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vazio-simple-fasting-tracker/id6758858128/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 31 MB |
| Requires iOS | 18.6 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Andres Rojas](https://appshunter.io/developer/1875305474) | [Prime Adventure LLC](https://appshunter.io/developer/6803535656) |

## What reviewers say

### Vazio

[App page](https://appshunter.io/ios/app/vazio-simple-fasting-tracker/id6758858128)

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:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $0.99 | per 7 days |
| Monthly Plan | $1.99 | per month |
| Annual Plan | $12.99 | per year |


### The Fast

[App page](https://appshunter.io/ios/app/the-fast-fasting-timer/id6813492448)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Vazio free?

Vazio is free to download, with in-app purchases available.

### Is The Fast free?

The Fast is free to download, with no in-app purchases.

### Do Vazio or The Fast have ads?

Neither Vazio nor The Fast shows ads.

### Which is updated more often, Vazio or The Fast?

Vazio ships an update every 3 days, and The Fast daily. Most recently, Vazio was updated on October 5, 2026 and The Fast on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*