Trackkarma vs JamReady
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trackkarma
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.
- 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
Read full descriptionHide full description
Managing a league can be complicated. Between the data lost in spreadsheets and the information scattered on social networks, communication between members is not always easy. With Trackkarma, we provide a powerful and intuitive application to eliminate these inconveniences and help you manage your league without the fuss. Developed by and for the derby community, Trackkarma aims to be as complete as possible while being accessible to anyone. The many features have been designed to be easily usable thanks to an intuitive and refined interface, accessible on computers, tablets and smartphones. PRACTICE SESSIONS Training is the basis of the life of your league, but monitoring each member is sometimes complicated. Simplify their management and eliminate inconvenience thanks to Trackkarma and its advanced features: • Create single and recurring sessions • Individual and team attendance tracking • Program preparation by trainers • Calculation of minimum attendance rate required • Charts and summaries of attendance for the season GAMES The organization of games requires quite substantial logistical work. This is sometimes complicated by difficult communication and the scattering of relevant documents and information. Trackkarma makes it all very easy, while offering innovative features! • All practical information gathered in one place • Availability request and attendance calculation • Creation and export of rosters • Creation of the game officials crew among the officials of your league or by inviting external officials • Import of WFTDA Stasbooks and graphical visualization of game statistics MINIMUM SKILLS The career of roller derby players necessarily begins with learning basic skills. These minimum skills are an essential prerequisite to guarantee a good preparation for the competition. Trackkarma offers several tools to assist in this learning. • List of skills required to be assessed • Feedback from coaches • Skill achievement tracking charts • Summary of the evolution of skills COMMUNICATION Sharing information between league members is not always easy. Between the messages exchanged on social networks and the documents shared in a hazardous way, it is easy to miss crucial communications. Trackkarma eliminates all these worries! • Centralization and sharing of documents • Discussions and messages • Notifications • Shared calendar
JamReady
Read full descriptionHide full description
JamReady is a roller derby game control app for running jams, lineups, periods, and timeouts. It is designed to keep core bout operations clear and quick, whether you are using it in local mode or connecting to the community-standard CRG Scoreboard. A key feature of JamReady is vibration alerts, both for on-device games & when connected to a remote scoreboard. Instead of relying only on visual cues, the app provides haptic feedback at important timing thresholds (including end-of-clock situations), helping operators stay aware while multitasking during live gameplay. Features: - Controls for start jam, stop jam, timeout, and undo - Clock displays for lineup, jam, period, and intermission - Built-in vibration alerts for critical timing transitions - Local/offline mode - Remote mode compatible with CRG Scoreboard - Team panels with timeout and official review tracking - QR code support for remote setup JamReady was developed with support from the 501(c)(3) organizations Seattle Derby Brats and Rainier Roller Riot. Special thanks to both organizations for testing. Disclaimer: JamReady is an independent app and is not officially affiliated with the CRG Scoreboard project.
Screenshots
Verdict
The clearest difference is update cadence: Trackkarma at every 2 weeks against JamReady's every 2 months. JamReady's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Trackkarma ships an update every 2 weeks, JamReady every 2 months. The most recent releases landed on October 4, 2026 and September 13, 2026 respectively.
| Parameter | Trackkarma | JamReady |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 46 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Christophe Goffart | RYAN NICHOLAS SMITH |
In-app purchases
Trackkarma
No in-app purchases
JamReady
No in-app purchases








