# Trackkarma vs Jam Timer

The clearest difference is price: Trackkarma at Free against Jam Timer's $3.99. Trackkarma also leads on rating (5.0 vs 1.0). Jam Timer's advantage is chart position (#188 vs unranked). On ratings volume, ads, in-app purchases and device support there is nothing between them.

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

Trackkarma holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

## The numbers

| Metric | Trackkarma | Jam Timer |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/trackkarma/id6473739561/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/jam-timer-roller-derby-timer/id6747149650/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#188** |
| Size | 46 MB | 19 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Christophe Goffart](https://appshunter.io/developer/1719639459) | [DLY](https://appshunter.io/developer/1627865311) |

## What reviewers say

### Trackkarma

[App page](https://appshunter.io/ios/app/trackkarma/id6473739561)

This app simplifies league management for sports teams, centralizing practice sessions, game organization, skill tracking, and communication. It offers an intuitive interface for coaches and members to manage attendance, rosters, and performance data.

**Highlights:** Practice session creation and attendance tracking, Game organization and roster management, Skill achievement tracking, Centralized document sharing, League-wide communication tools, Event calendar and notifications

**Features:** macOS Compatibility

**In-app purchases:** none


### Jam Timer

[App page](https://appshunter.io/ios/app/jam-timer-roller-derby-timer/id6747149650)

**Currently charting:** #188 Top Paid · Sports (US App Store)

This app provides precise timing control for roller derby officials, offering built-in configurations for various leagues and professional timing features. It's designed for one-handed operation with a clear display and haptic feedback, working completely offline.

**Highlights:** Built-in game configurations, Professional timing control, Designed for officials, Game management features, Offline operation

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

**In-app purchases:** none


## Frequently asked questions

### Is Trackkarma free?

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

### Is Jam Timer free?

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

### Which has better reviews, Trackkarma or Jam Timer?

Trackkarma is rated higher. Trackkarma averages 5.0 out of 5 from 1 ratings, while Jam Timer averages 1.0 from 1 ratings.

### Do Trackkarma or Jam Timer have ads?

Neither Trackkarma nor Jam Timer shows ads.

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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.*