# Penalty Timer vs Jamzo

The clearest difference is price: Jamzo at Free against Penalty Timer's $3.99. Jamzo also leads on update cadence (every 6 weeks vs every 5 months). Penalty Timer's advantage is chart position (#200 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Jamzo is free to download; Penalty Timer costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Penalty Timer ships an update every 5 months, Jamzo every 6 weeks. The most recent releases landed on September 10, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Penalty Timer | Jamzo |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/penalty-timer-roller-derby/id6747129159/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Best chart rank | **#200** | — |
| Size | 18 MB | 44 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Sebastin Michael](https://appshunter.io/developer/1224523462) | [Charles Robart](https://appshunter.io/developer/1842432470) |

## What reviewers say

### Penalty Timer

[App page](https://appshunter.io/ios/app/penalty-timer-roller-derby/id6747129159)

**Currently charting:** #200 Top Paid · Sports (US App Store)

This app provides precise penalty timing for roller derby officials and coaches. It features WFTDA rule compliance, offline functionality, and customizable settings for various game scenarios. Designed by derby enthusiasts, it ensures reliable timing without internet or ads.

**Highlights:** WFTDA rule-compliant penalty codes, Offline functionality, One-tap timer management, Customizable team colors, Flexible timer configurations, 10-second warning alerts

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

**In-app purchases:** none


### Jamzo

[App page](https://appshunter.io/ios/app/jamzo/id6753089065)

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

**In-app purchases:** none


## Frequently asked questions

### Is Penalty Timer free?

Penalty Timer costs $3.99, with no in-app purchases.

### Is Jamzo free?

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

### Do Penalty Timer or Jamzo have ads?

Neither Penalty Timer nor Jamzo shows ads.

### Which is updated more often, Penalty Timer or Jamzo?

Penalty Timer ships an update every 5 months, and Jamzo every 6 weeks. Most recently, Penalty Timer was updated on September 10, 2026 and Jamzo on September 3, 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.*