# Personal Interval Timer vs Tabata Workout Timer (TWT)

The clearest difference is update cadence: Personal Interval Timer at every 4 weeks against Tabata Workout Timer (TWT)'s every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Personal Interval Timer sells 1 one-off in-app purchase and Tabata Workout Timer (TWT) sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Personal Interval Timer ships an update every 4 weeks, Tabata Workout Timer (TWT) every 2 months. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Personal Interval Timer | Tabata Workout Timer (TWT) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (14 ratings)](https://appshunter.io/ios/app/personal-interval-timer/id1479646964/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 48 MB |
| Requires iOS | **14.2** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AlexApps.Net Co](https://appshunter.io/developer/972261962) | [T&D Innovations GbR](https://appshunter.io/developer/1662356742) |

## What reviewers say

### Personal Interval Timer

[App page](https://appshunter.io/ios/app/personal-interval-timer/id1479646964)

This app helps you manage timed workouts for sports like boxing, HIIT, and Tabata. It offers customizable presets, workout history tracking, and works with a locked screen and background music. Share your routines with friends and receive voice or bell notifications.

**Highlights:** Works with locked screen, Plays with background music, Saves custom presets, Share workouts with friends, History and progress charts, Voice or bell notifications

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $5.99 | one-time |


### 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 Personal Interval Timer free?

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

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

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

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

Both Personal Interval Timer and Tabata Workout Timer (TWT) show ads.

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

Personal Interval Timer ships an update every 4 weeks, and Tabata Workout Timer (TWT) every 2 months. Most recently, Personal Interval Timer was updated on September 23, 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.*