# IntervalTimer vs DefectiveIntervalTimer

The clearest difference is in-app purchases: DefectiveIntervalTimer at none against IntervalTimer's 3. IntervalTimer's advantage is iOS requirement (17.0 vs 26.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. IntervalTimer sells 3 in-app purchases, starting at $1.99 per month. DefectiveIntervalTimer asks for nothing beyond the download.

IntervalTimer ships an update every 10 days, DefectiveIntervalTimer every 3 weeks. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | IntervalTimer | DefectiveIntervalTimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/intervaltimer-tabata-and-emom/id6758163235/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | Freemium | — |
| Size | 18 MB | 1 MB |
| Requires iOS | **17.0** | 26.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [WD Studio](https://appshunter.io/developer/1842547806) | [DefectiveRobot LLC](https://appshunter.io/developer/1896730100) |

## What reviewers say

### IntervalTimer

[App page](https://appshunter.io/ios/app/intervaltimer-tabata-and-emom/id6758163235)

This app provides a minimalist yet powerful interval timer for high-intensity workouts like HIIT, Tabata, and EMOM. It features professional voice guidance, customizable templates, and a clear, large display for easy readability during exercise.

**Highlights:** Professional voice guidance, 20+ built-in workout templates, Customizable interval presets, Extra-large, readable display, Three-color phase coding, Workout session tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Monthly $1.99 | $1.99 | per month |
| PRO Annual $19.99 | $9.99 | per year |
| Interval Timer Pro Lifetime | $39.99 | one-time |


### DefectiveIntervalTimer

[App page](https://appshunter.io/ios/app/defectiveintervaltimer/id6792529143)

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

**In-app purchases:** none


## Frequently asked questions

### Is IntervalTimer free?

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

### Is DefectiveIntervalTimer free?

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

### Do IntervalTimer or DefectiveIntervalTimer have ads?

Neither IntervalTimer nor DefectiveIntervalTimer shows ads.

### Which is updated more often, IntervalTimer or DefectiveIntervalTimer?

IntervalTimer ships an update every 10 days, and DefectiveIntervalTimer every 3 weeks. Most recently, IntervalTimer was updated on October 8, 2026 and DefectiveIntervalTimer 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.*