# Death Clock vs Reaction Time Test

The clearest difference is ads: Reaction Time Test at none against Death Clock's shown. Reaction Time Test also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 8, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Death Clock | Reaction Time Test |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Size | 3 MB | 26 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Tom Hestas](https://appshunter.io/developer/1877086504) | [Gunawan Santoso](https://appshunter.io/developer/1843786072) |

## What reviewers say

### Death Clock

[App page](https://appshunter.io/ios/app/death-clock-longevity/id6759847342)

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

**In-app purchases:** none


### Reaction Time Test

[App page](https://appshunter.io/ios/app/reaction-time-test-reflex/id6765722492)

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

**In-app purchases:** none


## Frequently asked questions

### Is Death Clock free?

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

### Is Reaction Time Test free?

Reaction Time Test is free to download, with no in-app purchases.

### Do Death Clock or Reaction Time Test have ads?

Death Clock shows ads; Reaction Time Test does not.

### Which is updated more often, Death Clock or Reaction Time Test?

Death Clock ships an update every 2 months, and Reaction Time Test every 2 months. Most recently, Death Clock was updated on September 8, 2026 and Reaction Time Test on September 25, 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.*