# Kronos Studio vs HIIT Timer

The clearest difference is in-app purchases: HIIT Timer at none against Kronos Studio's 2. Kronos Studio's advantage is update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Kronos Studio sells 2 in-app purchases, starting at $7.99 per month. HIIT Timer asks for nothing beyond the download.

Kronos Studio ships an update every 2 days, HIIT Timer fortnightly. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Kronos Studio | HIIT Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/hiit-timer-interval-and-tabata/id6795821541/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Fortnightly |
| Monetization | — | Free |
| Size | 97 MB | 37 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Muller Labs LLC](https://appshunter.io/developer/1884923229) | [ANNR Studio](https://appshunter.io/developer/6785540709) |

## What reviewers say

### 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 | $7.99 | per month |
| Kronos Pro Yearly | $79.99 | per year |


### HIIT Timer

[App page](https://appshunter.io/ios/app/hiit-timer-interval-and-tabata/id6795821541)

This interval training app provides voice-guided workouts for Tabata, EMOM, Circuit, and custom routines. It allows users to focus on their exercises without constantly checking their screen, with features like saved workouts and workout history.

**Highlights:** Voice announcements for workout cues, Multiple training modes (Tabata, EMOM, Circuit, Custom), Save and replay custom workouts, Workout history tracking, Independent sound, haptic, and voice controls, Music integration with voice cues

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

**In-app purchases:** none


## Frequently asked questions

### Is Kronos Studio free?

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

### Is HIIT Timer free?

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

### Do Kronos Studio or HIIT Timer have ads?

Neither Kronos Studio nor HIIT Timer shows ads.

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

Kronos Studio ships an update every 2 days, and HIIT Timer fortnightly. Most recently, Kronos Studio was updated on September 18, 2026 and HIIT Timer on September 10, 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.*