# Knockout vs RoundBell

The clearest difference is in-app purchases: RoundBell at none against Knockout's 2. RoundBell also leads on update cadence (every 5 days vs every 2 weeks) and iOS requirement (17.0 vs 26.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Knockout sells 2 in-app purchases, starting at $3.99 per month. RoundBell asks for nothing beyond the download.

Knockout ships an update every 2 weeks, RoundBell every 5 days. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Knockout | RoundBell |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/knockout-boxing-coach/id6760410366/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Subscription | **Free** |
| Size | 110 MB | 3 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Serhii Kopytchuk](https://appshunter.io/developer/1769027531) | [Starcrown Inc](https://appshunter.io/developer/1082624152) |

## What reviewers say

### Knockout

[App page](https://appshunter.io/ios/app/knockout-boxing-coach/id6760410366)

This app provides a structured and intense training experience for various interval workouts, including boxing, MMA, and HIIT. Users can easily create custom routines or use presets, with features like random cues and clear transition sounds to enhance focus and performance.

**Highlights:** Customizable flexible timers, Fast start presets, Random audio cue signals, Step-end transition sounds, Quick editing of routines, Focused fight screen with big timer, Training statistics tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Knockout Pro Monthly | $3.99 | per month |
| Knockout Pro Yearly | $14.99 | per year |


### RoundBell

[App page](https://appshunter.io/ios/app/roundbell-boxing-timer/id6761452918)

This interval timer app is designed for boxing, kickboxing, and martial arts training. It offers customizable round times, audio cues, and voice alerts to keep you on track during workouts. Save your preferred settings for quick access and enjoy a clear, large display visible from a distance.

**Highlights:** Customizable round and interval times, Gong and horn sound alerts, Audio countdowns and voice notifications, Save and load custom presets, Haptic feedback for notifications, Screen wake lock for continuous display

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

**In-app purchases:** none


## Frequently asked questions

### Is Knockout free?

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

### Is RoundBell free?

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

### Do Knockout or RoundBell have ads?

Neither Knockout nor RoundBell shows ads.

### Which is updated more often, Knockout or RoundBell?

Knockout ships an update every 2 weeks, and RoundBell every 5 days. Most recently, Knockout was updated on September 18, 2026 and RoundBell on September 20, 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.*