# Interval Timer vs Catalytic Explosion

The clearest difference is in-app purchases: Catalytic Explosion at none against Interval Timer's 1. Catalytic Explosion also leads on ads (none vs shown) and review sentiment (100% vs 84%). Interval Timer's advantage is ratings volume (246 vs 1) and device support (4 vs 2). On price and rating there is nothing between them.

Both are free to download. Interval Timer sells 1 one-off in-app purchase. Catalytic Explosion asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Interval Timer against 5.0 for Catalytic Explosion. That said, the two scores are not equally well evidenced: Interval Timer has 246 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 84% of Interval Timer's written reviews are positive against 100% of Catalytic Explosion's.

## The numbers

| Metric | Interval Timer | Catalytic Explosion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (246 ratings)](https://appshunter.io/ios/app/interval-timer-hiit-workout/id1596127692/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/catalytic-explosion/id6786890948/reviews)** |
| Number of ratings | **246** | 1 |
| Positive reviews | 83.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 12 MB | 17 MB |
| Requires iOS | **13.0** | 26.5 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yosyp Hameliak](https://appshunter.io/developer/895008826) | [Ornicus](https://appshunter.io/developer/878260219) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-hiit-workout/id1596127692)

This interval timer is designed for HIIT and interval training. Easily set work and rest periods, sets, and rounds to guide your workouts. It supports background operation and music playback, with an Apple Watch companion app for heart rate monitoring.

**Highlights:** Customizable work and rest periods, Set number of sets and rounds, Background operation support, Music playback compatibility, Apple Watch integration, Heart rate monitoring (Apple Watch)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### Catalytic Explosion

[App page](https://appshunter.io/ios/app/catalytic-explosion/id6786890948)

Master the Wake-Initiated Lucid Dream (WILD) technique with this advanced tool. It uses adaptive sleep-tracking sequences to bridge the gap between waking and dreaming, suitable for beginners and experienced dreamers alike.

**Highlights:** Master WILD technique, Adaptive sleep-tracking, Bridge waking and dream worlds, Suitable for all experience levels

**In-app purchases:** none


## Frequently asked questions

### Is Interval Timer free?

Interval Timer is free to download, with in-app purchases available.

### Is Catalytic Explosion free?

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

### Which has better reviews, Interval Timer or Catalytic Explosion?

Catalytic Explosion is rated higher. Interval Timer averages 4.9 out of 5 from 246 ratings, while Catalytic Explosion averages 5.0 from 1 ratings.

### Do Interval Timer or Catalytic Explosion have ads?

Interval Timer shows ads; Catalytic Explosion does not.

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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.*