# Tabata & HIIT Interval Timer vs Kronos Studio

The clearest difference is in-app purchases: Tabata & HIIT Interval Timer at none against Kronos Studio's 2. Tabata & HIIT Interval Timer also leads on iOS requirement (13.0 vs 16.4). Kronos Studio's advantage is ads (none vs shown) and update cadence (every 3 days vs every 4 months). On price and device support there is nothing between them.

Both are free to download. Kronos Studio sells 2 in-app purchases, starting at $8.99 per month. Tabata & HIIT Interval Timer asks for nothing beyond the download.

Tabata & HIIT Interval Timer ships an update every 4 months, Kronos Studio every 3 days. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Tabata & HIIT Interval Timer | Kronos Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (246 ratings)](https://appshunter.io/ios/app/tabata-and-hiit-interval-timer/id1166542235/reviews)** | — |
| Number of ratings | **246** | — |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | Ad-supported | — |
| Size | 48 MB | 102 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Takahiro Torii](https://appshunter.io/developer/1048814905) | [Muller Labs LLC](https://appshunter.io/developer/1884923229) |

## What reviewers say

### Tabata & HIIT Interval Timer

[App page](https://appshunter.io/ios/app/tabata-and-hiit-interval-timer/id1166542235)

This app functions as a versatile timer for high-intensity interval training (HIIT) and Tabata workouts. It guides users through structured exercise and rest periods, making it easy to follow popular interval training methods for effective, short-duration fitness sessions.

**Highlights:** Tabata timer, Interval timer, HIIT workout guidance, Structured exercise/rest periods, Customizable training

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

**In-app purchases:** none


### Kronos Studio

[App page](https://appshunter.io/ios/app/kronos-studio/id6762472031)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kronos Pro Monthly | $8.99 | per month |
| Kronos Pro Yearly | $49.99 | per year |


## Frequently asked questions

### Is Tabata & HIIT Interval Timer free?

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

### Is Kronos Studio free?

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

### Do Tabata & HIIT Interval Timer or Kronos Studio have ads?

Tabata & HIIT Interval Timer shows ads; Kronos Studio does not.

### Which is updated more often, Tabata & HIIT Interval Timer or Kronos Studio?

Tabata & HIIT Interval Timer ships an update every 4 months, and Kronos Studio every 3 days. Most recently, Tabata & HIIT Interval Timer was updated on October 29, 2026 and Kronos Studio on October 28, 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.*