# JabClock vs RoundBell

The clearest difference is ads: RoundBell at none against JabClock's shown. RoundBell also leads on monetization model (free vs ad-supported). On price, review sentiment, update cadence 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.

JabClock ships an update every 4 days, RoundBell every 5 days. The most recent releases landed on September 17, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | JabClock | RoundBell |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/jabclock/id6760090836/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | Ad-supported | **Free** |
| Size | 6 MB | 3 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [David Luong](https://appshunter.io/developer/1882499983) | [Starcrown Inc](https://appshunter.io/developer/1082624152) |

## What reviewers say

### JabClock

[App page](https://appshunter.io/ios/app/jabclock/id6760090836)

A highly configurable round timer designed for combat sports and interval training. Customize rounds, rest, and alerts for a focused workout. Features glove-friendly controls and offline functionality.

**Highlights:** Configurable rounds and rest periods, Multiple built-in training presets, Create and save custom presets, Variety of sound alerts, Adjustable volume and haptic feedback, Glove-friendly shake to pause, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 JabClock free?

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

### Is RoundBell free?

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

### Do JabClock or RoundBell have ads?

JabClock shows ads; RoundBell does not.

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

JabClock ships an update every 4 days, and RoundBell every 5 days. Most recently, JabClock was updated on September 17, 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.*