# IntervalFree vs Kronos Studio

The clearest difference is in-app purchases: IntervalFree at none against Kronos Studio's 2. Kronos Studio's advantage is update cadence (every 3 days vs every 2 months) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

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

IntervalFree ships an update every 2 months, Kronos Studio every 3 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | IntervalFree | Kronos Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (40 ratings)](https://appshunter.io/ios/app/intervalfree/id6759891915/reviews)** | — |
| Number of ratings | **40** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 8 MB | 102 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [LIFEFLOW AI, LLC](https://appshunter.io/developer/1880544564) | [Muller Labs LLC](https://appshunter.io/developer/1884923229) |

## What reviewers say

### IntervalFree

[App page](https://appshunter.io/ios/app/intervalfree/id6759891915)

This app provides a simple and fully customizable interval timer for workouts. It offers unlimited workout profiles, background support, and Live Activities for real-time progress tracking on your lock screen. Enjoy a completely free experience with no ads or paywalls.

**Highlights:** Unlimited workout profiles, Customizable action/break durations, Live Activities on Lock Screen, Background timer support, Multiple sound themes, Workout library with stats, Celebration screen upon completion

**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 IntervalFree free?

IntervalFree 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 IntervalFree or Kronos Studio have ads?

Neither IntervalFree nor Kronos Studio shows ads.

### Which is updated more often, IntervalFree or Kronos Studio?

IntervalFree ships an update every 2 months, and Kronos Studio every 3 days. Most recently, IntervalFree was updated on November 5, 2026 and Kronos Studio on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*