# Fastra vs QN Scale

The clearest difference is in-app purchases: QN Scale at none against Fastra's 2. QN Scale also leads on update cadence (every 2 days vs every 6 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Fastra sells 2 in-app purchases, starting at $3.99 per month. QN Scale asks for nothing beyond the download.

Fastra ships an update every 6 days, QN Scale every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Fastra | QN Scale |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/fastra-intermittent-fasting/id6736870610/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 37 MB | 2 MB |
| Requires iOS | 18.5 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Liam Baev](https://appshunter.io/developer/1773585957) | [Pavel DEMIANOV](https://appshunter.io/developer/1896680315) |

## What reviewers say

### Fastra

[App page](https://appshunter.io/ios/app/fastra-intermittent-fasting/id6736870610)

This app helps you track various intermittent fasting schedules, including popular plans like 16:8 and OMAD. It offers a visible timer on your lock screen and home screen, allows you to log your feelings after fasting, and syncs with Apple Health for weight and water intake. Premium features unlock advanced insights and an ad-free experience.

**Highlights:** Customizable fasting windows, Live Activity and Dynamic Island timer, Fasting zone insights, Post-fast mood logging, Weight and water tracking, Apple Health sync

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.99 | per month |
| Premium Annual | $19.99 | per year |


### QN Scale

[App page](https://appshunter.io/ios/app/qn-scale/id6800921179)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fastra free?

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

### Is QN Scale free?

QN Scale is free to download, with no in-app purchases.

### Do Fastra or QN Scale have ads?

Neither Fastra nor QN Scale shows ads.

### Which is updated more often, Fastra or QN Scale?

Fastra ships an update every 6 days, and QN Scale every 2 days. Most recently, Fastra was updated on October 30, 2026 and QN Scale on October 31, 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.*