# Kronos Studio vs Rondo

The clearest difference is update cadence: Kronos Studio at every 2 days against Rondo's every 2 weeks. Kronos Studio also leads on device support (3 vs 1). On price, ads, in-app purchases 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 and Rondo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Kronos Studio ships an update every 2 days, Rondo every 2 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | Kronos Studio | Rondo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/rondo-workout-interval-timer/id6796843225/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | — | Freemium |
| Size | 102 MB | 12 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Muller Labs LLC](https://appshunter.io/developer/1884923229) | [DeeCode LLC](https://appshunter.io/developer/6796843227) |

## 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 | $8.99 | per month |
| Kronos Pro Yearly | $49.99 | per year |


### Rondo

[App page](https://appshunter.io/ios/app/rondo-workout-interval-timer/id6796843225)

This app provides a hands-free, spoken interval timer for workouts, ensuring accuracy and clear cues for each phase. It offers customizable timers for various training formats and keeps your screen awake during sessions. Your workout history is saved locally, with an option for premium features like unlimited timer saves and advanced stats.

**Highlights:** Hands-free spoken cues for work and rest, Large, readable countdown display, Haptic feedback for phase changes, Accurate wall-clock timing, Music integration with volume softening, Support for Tabata, EMOM, and custom timers, Workout history tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rondo Premium Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is Kronos Studio free?

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

### Is Rondo free?

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

### Do Kronos Studio or Rondo have ads?

Neither Kronos Studio nor Rondo shows ads.

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

Kronos Studio ships an update every 2 days, and Rondo every 2 weeks. Most recently, Kronos Studio was updated on October 31, 2026 and Rondo on October 31, 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.*