# Gym Timer! vs Synaptic Flow

The clearest difference is ads: Gym Timer! at none against Synaptic Flow's shown. Gym Timer! also leads on update cadence (fortnightly vs every 39 months) and iOS requirement (13.2 vs 17.0). On price, in-app purchases and device support there is nothing between them.

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

Gym Timer! ships an update fortnightly, Synaptic Flow every 39 months. The most recent releases landed on September 26, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Gym Timer! | Synaptic Flow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 39 months |
| Size | 5 MB | 16 MB |
| Requires iOS | **13.2** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Joan Cardona](https://appshunter.io/developer/1440419863) | [ZAINAB KICHOU AMANAD](https://appshunter.io/developer/1644291674) |

## What reviewers say

### Gym Timer!

[App page](https://appshunter.io/ios/app/gym-timer/id1510978807)

**Features:** macOS Compatibility

**In-app purchases:** none


### Synaptic Flow

[App page](https://appshunter.io/ios/app/synaptic-flow-brain-training/id1667108202)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gym Timer! free?

Gym Timer! is free to download, with no in-app purchases.

### Is Synaptic Flow free?

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

### Do Gym Timer! or Synaptic Flow have ads?

Synaptic Flow shows ads; Gym Timer! does not.

### Which is updated more often, Gym Timer! or Synaptic Flow?

Gym Timer! ships an update fortnightly, and Synaptic Flow every 39 months. Most recently, Gym Timer! was updated on September 26, 2026 and Synaptic Flow on September 28, 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.*