# Reaction Timer Training vs CirclesFit

The clearest difference is in-app purchases: CirclesFit at none against Reaction Timer Training's 1. CirclesFit also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). Reaction Timer Training's advantage is update cadence (every 3 months vs every 7 months) and device support (4 vs 2). On price there is nothing between them.

Both are free to download. Reaction Timer Training sells 1 in-app purchase, starting at $1.99 per month. CirclesFit asks for nothing beyond the download.

Reaction Timer Training ships an update every 3 months, CirclesFit every 7 months. The most recent releases landed on October 22, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Reaction Timer Training | CirclesFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (4 ratings)](https://appshunter.io/ios/app/reaction-timer-training/id1512744673/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 2 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MillionTask, Unipessoal, Lda](https://appshunter.io/developer/1512744672) | [Velocidev GmbH](https://appshunter.io/developer/1130418588) |

## What reviewers say

### Reaction Timer Training

[App page](https://appshunter.io/ios/app/reaction-timer-training/id1512744673)

Enhance your cognitive and physical performance with this reaction training app. Improve reaction time, decision-making, and coordination using customizable drills and Apple Watch integration. Track progress and sync data with the Health app.

**Highlights:** Improve reaction time, Enhance decision time, Develop peripheral vision, Boost coordination and speed, Customizable training drills, Apple Watch integration, Health app sync

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Auto Renewable Subs | $1.99 | per month |


### CirclesFit

[App page](https://appshunter.io/ios/app/circlesfit/id1638587050)

**In-app purchases:** none


## Frequently asked questions

### Is Reaction Timer Training free?

Reaction Timer Training is free to download, with in-app purchases available.

### Is CirclesFit free?

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

### Do Reaction Timer Training or CirclesFit have ads?

Reaction Timer Training shows ads; CirclesFit does not.

### Which is updated more often, Reaction Timer Training or CirclesFit?

Reaction Timer Training ships an update every 3 months, and CirclesFit every 7 months. Most recently, Reaction Timer Training was updated on October 22, 2026 and CirclesFit on October 27, 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.*