# Reaction Timer Training vs Interval Timer & Randomizer

The clearest difference is in-app purchases: Interval Timer & Randomizer at none against Reaction Timer Training's 1. Interval Timer & Randomizer also leads on ads (none vs shown) and update cadence (every 4 weeks vs every 3 months). Reaction Timer Training's advantage is device support (4 vs 1) and iOS requirement (15.0 vs 18.2). 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. Interval Timer & Randomizer asks for nothing beyond the download.

Reaction Timer Training ships an update every 3 months, Interval Timer & Randomizer every 4 weeks. Both last shipped on September 18, 2026.

## The numbers

| Metric | Reaction Timer Training | Interval Timer & Randomizer |
| --- | --- | --- |
| 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 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 4 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MillionTask, Unipessoal, Lda](https://appshunter.io/developer/1512744672) | [Hitfire Production AB](https://appshunter.io/developer/1517601288) |

## 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 |


### Interval Timer & Randomizer

[App page](https://appshunter.io/ios/app/interval-timer-and-randomizer/id6742220783)

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

**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 Interval Timer & Randomizer free?

Interval Timer & Randomizer is free to download, with no in-app purchases.

### Do Reaction Timer Training or Interval Timer & Randomizer have ads?

Reaction Timer Training shows ads; Interval Timer & Randomizer does not.

### Which is updated more often, Reaction Timer Training or Interval Timer & Randomizer?

Reaction Timer Training ships an update every 3 months, and Interval Timer & Randomizer every 4 weeks. Most recently, Reaction Timer Training was updated on September 18, 2026 and Interval Timer & Randomizer on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*