# Interval Timer vs Tabata Workout Timer (TWT)

The clearest difference is in-app purchases: Interval Timer at none against Tabata Workout Timer (TWT)'s 3. Interval Timer also leads on ads (none vs shown) and iOS requirement (8.0 vs 15.6). Tabata Workout Timer (TWT)'s advantage is update cadence (every 2 months vs every 34 months). On price and device support there is nothing between them.

Both are free to download. Tabata Workout Timer (TWT) sells 3 in-app purchases, starting at $0.99 per month. Interval Timer asks for nothing beyond the download.

Interval Timer ships an update every 34 months, Tabata Workout Timer (TWT) every 2 months. The most recent releases landed on June 1, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Interval Timer | Tabata Workout Timer (TWT) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/interval-timer-just-sw/id1208913244/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 34 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 8 MB | 48 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tony Peng](https://appshunter.io/developer/560451165) | [T&D Innovations GbR](https://appshunter.io/developer/1662356742) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-just-sw/id1208913244)

This app provides a customizable interval timer for High Intensity Interval Training (HIIT) and Tabata workouts. Easily set up your workout structure with custom sets, action times, and break times for any interval training routine.

**Highlights:** Customizable sets, Action time settings, Break time settings, HIIT training support, Tabata training support, Simple and easy to use

**Features:** macOS Compatibility

**In-app purchases:** none


### Tabata Workout Timer (TWT)

[App page](https://appshunter.io/ios/app/tabata-workout-timer-twt/id1663612525)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free monthly subscription | $0.99 | per month |
| Ad-free 6 month subscription | $3.99 | per 6 months |
| Ad-free yearly subscription | $8.99 | per year |


## Frequently asked questions

### Is Interval Timer free?

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

### Is Tabata Workout Timer (TWT) free?

Tabata Workout Timer (TWT) is free to download, with in-app purchases available.

### Do Interval Timer or Tabata Workout Timer (TWT) have ads?

Tabata Workout Timer (TWT) shows ads; Interval Timer does not.

### Which is updated more often, Interval Timer or Tabata Workout Timer (TWT)?

Interval Timer ships an update every 34 months, and Tabata Workout Timer (TWT) every 2 months. Most recently, Interval Timer was updated on June 1, 2026 and Tabata Workout Timer (TWT) on September 18, 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.*