# Interval Timer vs Kronos Studio

The clearest difference is ads: Kronos Studio at none against Interval Timer's shown. Kronos Studio also leads on update cadence (every 3 days vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Interval Timer sells 12 in-app purchases, starting at $2.09 per month and Kronos Studio sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

Interval Timer ships an update monthly, Kronos Studio every 3 days. The most recent releases landed on October 27, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Interval Timer | Kronos Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (389 ratings)](https://appshunter.io/ios/app/interval-timer-tabata-and-hiit/id6443672034/reviews)** | — |
| Number of ratings | **389** | — |
| Positive reviews | 96.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 112 MB | 101 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [SimpleInnovation LLC](https://appshunter.io/developer/1479770962) | [Muller Labs LLC](https://appshunter.io/developer/1884923229) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-tabata-and-hiit/id6443672034)

This app provides a customizable interval timer for various training routines, including HIIT and Tabata. Easily set up custom workouts, track your progress, and stay motivated with visual cues and audio notifications. It's suitable for a wide range of activities from fitness to productivity.

**Highlights:** Customizable workout setup, Progress tracking with calendar, Saveable custom presets, Color-coded notifications, Listen to music/audiobooks, Large, full-screen display, Widget for easy access

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Timer PRO for 1 month: 30% OFF | $2.09 | per month |
| Timer PRO for 1 month: 25% OFF | $2.29 | per month |
| Interval Timer PRO for 1 month | $2.99 | per month |
| Interval Timer PRO for 1 month | $2.99 | per month |
| Interval Timer PRO - 30% OFF | $15.00 | per year |
| Interval Timer PRO - 25% OFF | $16.49 | per year |
| Interval Timer PRO for 1 year | $21.99 | per year |
| Tabata Timer PRO for 1 year | $21.99 | per year |
| Interval Timer - no Ads | $2.99 | one-time |
| HIIT Timer PRO Forever 30% OFF | $27.99 | one-time |
| HIIT Timer PRO Forever 25% OFF | $29.99 | one-time |
| Exercise Timer PRO Forever | $39.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🚀 Intuitive interface
- 🔋 Doesn't drain battery
- 💪 Effective for interval training
- 📆 Tracks workout history

**What reviewers complain about**

- 🔔 Frequent prompts to rate the app
- 🔒 Concerns about data privacy and permissions
- 🔧 Limited customization options

**Reported bugs**

- Occasional app crashes
- Compatibility issues with older devices

**Requested features**

- More pre-designed workout routines
- Ability to name and customize exercises
- Option to adjust countdown time between intervals


### 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 Interval Timer free?

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

### Is Kronos Studio free?

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

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

Interval Timer shows ads; Kronos Studio does not.

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

Interval Timer ships an update monthly, and Kronos Studio every 3 days. Most recently, Interval Timer was updated on October 27, 2026 and Kronos Studio on October 17, 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.*