# 20 Seconds vs Reflex Circle

The clearest difference is update cadence: Reflex Circle at every 2 days against 20 Seconds's every 8 months. 20 Seconds's advantage is device support (3 vs 1) and iOS requirement (7.1 vs 17.6). On price, ads and in-app purchases there is nothing between them.

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

20 Seconds ships an update every 8 months, Reflex Circle every 2 days. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 20 Seconds | Reflex Circle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (10 ratings)](https://appshunter.io/ios/app/20-seconds-test-your-reaction-time/id934081923/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 39 MB | 13 MB |
| Requires iOS | **7.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Asylum Square Interactive GmbH](https://appshunter.io/developer/1042383824) | [Reena Bouk](https://appshunter.io/developer/1865602850) |

## What reviewers say

### 20 Seconds

[App page](https://appshunter.io/ios/app/20-seconds-test-your-reaction-time/id934081923)

Challenge yourself to react as quickly as possible within a 20-second time limit. This simple yet engaging game offers pure fun and a way to test your reflexes.

**Highlights:** Test reaction speed, 20-second gameplay, Improve reflexes, Pure fun gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### Reflex Circle

[App page](https://appshunter.io/ios/app/reflex-circle/id6760378564)

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

**In-app purchases:** none


## Frequently asked questions

### Is 20 Seconds free?

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

### Is Reflex Circle free?

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

### Do 20 Seconds or Reflex Circle have ads?

Neither 20 Seconds nor Reflex Circle shows ads.

### Which is updated more often, 20 Seconds or Reflex Circle?

20 Seconds ships an update every 8 months, and Reflex Circle every 2 days. Most recently, 20 Seconds was updated on October 3, 2026 and Reflex Circle 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.*