# Keep your reflexes vs Sub250

The clearest difference is ads: Sub250 at none against Keep your reflexes's shown. Keep your reflexes's advantage is update cadence (every 2 days vs weekly) and device support (3 vs 1). On price, 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.

Keep your reflexes ships an update every 2 days, Sub250 weekly. The most recent releases landed on September 26, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Keep your reflexes | Sub250 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sub250-reaction-time-test/id6766965152/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | — | Free |
| Size | 5 MB | 49 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Masaharu Tsukamoto](https://appshunter.io/developer/939316877) | [Pierre Caporossi](https://appshunter.io/developer/1470803775) |

## What reviewers say

### Keep your reflexes

[App page](https://appshunter.io/ios/app/keep-your-reflexes-flashfive/id6746483790)

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

**In-app purchases:** none


### Sub250

[App page](https://appshunter.io/ios/app/sub250-reaction-time-test/id6766965152)

Measure your reflexes with precision using multiple modes. This app calibrates your device's latency for accurate results and focuses on median scores over luck. It's designed for competitive gamers who need to understand their true reaction speed.

**Highlights:** Multiple reaction-time modes, Device latency calibration, Median score calculation, Anti-anticipation features, No accounts or servers, Local-only data storage

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

**In-app purchases:** none


## Frequently asked questions

### Is Keep your reflexes free?

Keep your reflexes is free to download, with no in-app purchases.

### Is Sub250 free?

Sub250 is free to download, with no in-app purchases.

### Do Keep your reflexes or Sub250 have ads?

Keep your reflexes shows ads; Sub250 does not.

### Which is updated more often, Keep your reflexes or Sub250?

Keep your reflexes ships an update every 2 days, and Sub250 weekly. Most recently, Keep your reflexes was updated on September 26, 2026 and Sub250 on October 7, 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.*