# Fast vs Fasting Timer by TrainerDay

The clearest difference is in-app purchases: Fasting Timer by TrainerDay at none against Fast's 1. Fasting Timer by TrainerDay also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.4). On price and ads there is nothing between them.

Both are free to download. Fast sells 1 in-app purchase, starting at $0.99 per month. Fasting Timer by TrainerDay asks for nothing beyond the download.

## The numbers

| Metric | Fast | Fasting Timer by TrainerDay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (12 ratings)](https://appshunter.io/ios/app/fasting-timer-by-trainerday/id6758466061/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Monetization | — | Free |
| Size | 45 MB | 30 MB |
| Requires iOS | 17.4 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [EngineZero](https://appshunter.io/developer/1573141529) | [TrainerDay Inc](https://appshunter.io/developer/1816950052) |

## What reviewers say

### Fast

[App page](https://appshunter.io/ios/app/fast/id1576995647)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | per month |


### Fasting Timer by TrainerDay

[App page](https://appshunter.io/ios/app/fasting-timer-by-trainerday/id6758466061)

This app simplifies intermittent fasting with a one-tap start and customizable durations. Track your progress visually and review your fasting history. It's designed for easy habit building without complex features.

**Highlights:** One-tap fast start, Customizable fasting durations, Flexible start times, Visual progress tracking, Fasting history, Shareable results

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

**In-app purchases:** none


## Frequently asked questions

### Is Fast free?

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

### Is Fasting Timer by TrainerDay free?

Fasting Timer by TrainerDay is free to download, with no in-app purchases.

### Do Fast or Fasting Timer by TrainerDay have ads?

Neither Fast nor Fasting Timer by TrainerDay shows ads.

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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.*