# Reaction Time Test vs SafeCracker

The clearest difference is price: Reaction Time Test at Free against SafeCracker's $0.99. Reaction Time Test also leads on update cadence (every 3 months vs every 19 months). SafeCracker's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.6). On in-app purchases and device support there is nothing between them.

Reaction Time Test is free to download; SafeCracker costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Reaction Time Test ships an update every 3 months, SafeCracker every 19 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Reaction Time Test | SafeCracker |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/safecracker/id6449232640/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 19 months |
| Monetization | **Ad-supported** | Paid |
| Size | 13 MB | 2 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Ryouhei Azuma](https://appshunter.io/developer/1353297781) | [Paul Scott](https://appshunter.io/developer/1542422467) |

## What reviewers say

### Reaction Time Test

[App page](https://appshunter.io/ios/app/reaction-time-test-rtt/id1669730948)

Test and train your reflexes with this app. Simply tap the screen when a red square appears to measure your reaction speed and improve your concentration. Daily practice can enhance your reflexes, making it ideal for gamers.

**Highlights:** Reaction speed testing, Reflex training, Concentration improvement, Rank display, Daily practice recommended

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

**In-app purchases:** none


### SafeCracker

[App page](https://appshunter.io/ios/app/safecracker/id6449232640)

A standalone game where players open safes by carefully listening to the tumblers. It offers a unique auditory puzzle experience for those who enjoy a challenge.

**Highlights:** Standalone safe cracking gameplay, Listen to tumblers to open safes, Auditory puzzle mechanics, Single-player experience

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Reaction Time Test free?

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

### Is SafeCracker free?

SafeCracker costs $0.99, with no in-app purchases.

### Do Reaction Time Test or SafeCracker have ads?

Reaction Time Test shows ads; SafeCracker does not.

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

Reaction Time Test ships an update every 3 months, and SafeCracker every 19 months. Most recently, Reaction Time Test was updated on November 3, 2026 and SafeCracker on November 3, 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.*