# Rounds vs KesselRUN Running

The clearest difference is iOS requirement: KesselRUN Running at 15.1 against Rounds's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Rounds ships an update every 2 weeks, KesselRUN Running every 9 days. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Rounds | KesselRUN Running |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rounds-interval-hiit-timer/id6762529965/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 49 MB | 33 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nightjar Labs LLC.](https://appshunter.io/developer/1466628290) | [ThreeLees LLC](https://appshunter.io/developer/6778656941) |

## What reviewers say

### Rounds

[App page](https://appshunter.io/ios/app/rounds-interval-hiit-timer/id6762529965)

This interval timer app simplifies workout creation for various training styles like HIIT, Tabata, and circuits. Build custom routines by stacking work, rest, and prep blocks, grouping them into rounds, and saving them as presets for quick access. It's designed for gym use, ensuring it won't interrupt your music.

**Highlights:** Customizable workout builder, Stackable work, rest, and prep blocks, Round grouping and repetition, Save and launch preset workouts, Music interruption-free design, Customizable sound profiles

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

**In-app purchases:** none


### KesselRUN Running

[App page](https://appshunter.io/ios/app/kesselrun-running/id6781022500)

**In-app purchases:** none


## Frequently asked questions

### Is Rounds free?

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

### Is KesselRUN Running free?

KesselRUN Running is free to download, with no in-app purchases.

### Do Rounds or KesselRUN Running have ads?

Neither Rounds nor KesselRUN Running shows ads.

### Which is updated more often, Rounds or KesselRUN Running?

Rounds ships an update every 2 weeks, and KesselRUN Running every 9 days. Most recently, Rounds was updated on October 17, 2026 and KesselRUN Running on October 6, 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.*