# Vazio vs Vow Fasting

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.

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 3 days, Vow Fasting fortnightly. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Vazio | Vow Fasting |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 13 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Andres Rojas](https://appshunter.io/developer/1875305474) | [FILIP LUCCA KEJSER DAMICI](https://appshunter.io/developer/6776396594) |

## 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 |


### Vow Fasting

[App page](https://appshunter.io/ios/app/vow-fasting/id6776396592)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vow Pro Monthly | $4.99 | per month |
| Vow Pro Annual | $39.99 | per year |


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