# Fast vs PushUp Synth

The clearest difference is update cadence: Fast at every 2 weeks against PushUp Synth's monthly. Fast also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Fast ships an update every 2 weeks, PushUp Synth monthly. The most recent releases landed on August 18, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Fast | PushUp Synth |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Size | 22 MB | 141 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CodeHive](https://appshunter.io/developer/1196672412) | [Dissolve Media AB](https://appshunter.io/developer/1858051460) |

## What reviewers say

### Fast

[App page](https://appshunter.io/ios/app/fast-intermittent-fasting/id6741595659)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### PushUp Synth

[App page](https://appshunter.io/ios/app/pushup-synth/id6756027096)

**In-app purchases:** none


## Frequently asked questions

### Is Fast free?

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

### Is PushUp Synth free?

PushUp Synth is free to download, with no in-app purchases.

### Do Fast or PushUp Synth have ads?

Neither Fast nor PushUp Synth shows ads.

### Which is updated more often, Fast or PushUp Synth?

Fast ships an update every 2 weeks, and PushUp Synth monthly. Most recently, Fast was updated on August 18, 2026 and PushUp Synth on September 15, 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.*