# JamTimer - for roller derby > Roller derby jam-timing app with league-specific and custom configurations. (iPhone/iPad app by Fearless Code.) - Source: https://appshunter.io/ios/app/jamtimer-for-roller-derby/id435346062 (this page in markdown: same URL + `.md`) - Developer: [Fearless Code](https://appshunter.io/developer/312416741) - Category: Sports, Lifestyle - Price: $1.99 - Rating: 5.00/5 from 9 App Store ratings · 16 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 1 MB - Languages: American English, Danish, Dutch, Finnish, French (France), German (Germany), Italian, Japanese, European Portuguese, European Spanish and 1 more - Released: 2011-05-24 - Data updated: 2026-08-21 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/jamtimer-for-roller-derby/id435346062/reviews.md ## What is JamTimer? JamTimer is an app designed for the exciting sport of roller derby. Created for the jam-timer position, JamTimer replaces the need for using stopwatches. It has built-in configurations for WTFDA, RDCL, or OSDA style games, and can be customized for any type of scrimmage or tournament scenario. FEATURES - Keep track of all timing related tasks needed in a roller derby game. - Built-in support for WFTDA, RDCL, and OSDA game configurations. - Add custom game configurations (scrimmage or tournaments). - Large buttons, conveniently operated with one hand. - Vibrate warnings for specific events. ## Key features - Roller derby jam-timing - WFTDA, RDCL, OSDA configurations - Custom game settings - One-hand operation - Vibrate warnings ## Recent user reviews (10 of 16) All indexed reviews: https://appshunter.io/ios/app/jamtimer-for-roller-derby/id435346062/reviews.md ### 5/5 — Amazing *2019-01-03* Exactly what a derby girl needs! And reasonably priced too :) this is a great app ### 5/5 — Add to Apple Watch? *2018-03-07* I love this app, makes jam timing so easy! Any chance it will make it onto Apple Watch? ### 5/5 — The best! *2017-06-18* I love this app! So much better then having to fumble with 2 stop watches. ### 5/5 — Yessss!!!!! *2016-04-24* Really great app! Thank you for developing this! ### 1/5 — Not working *2015-09-21* This app was great to begin with but now it won't load. ### 4/5 — Pretty good, but not customizable *2014-05-09* Good app, would be good to be able to sync with iPad or laptop so timer can be broadcast. Still, it's super handy and easy to use :) Custom feature is awesome too. Great job!! ### 5/5 — Scrimmage timing *2014-04-04* Thanks for this! Very handy to have! ### 5/5 — Perfect for scrimmages *2014-04-03* I referee for leagues without a ton of officials, this app (and it’s PenaltyTimer companion) are perfect for short-staffed scrimmages. ### 5/5 — 5 stars *2013-09-24* Incredibly useful and easy to use. ### 5/5 — Jam Timer *2012-07-10* I am no longer juggling stop watches, praying I will push the right button in the right order. This app made easy work of my job. I highly recommend this app for anyone who has the pleasure of jam timing. It is the best app I ever bought. Thank you!!!! ## Frequently asked questions about JamTimer ### What is JamTimer used for? JamTimer is specifically designed for the jam-timer role in roller derby. It replaces the need for physical stopwatches by providing digital timing functions tailored to the sport's unique requirements. ### Does JamTimer support different roller derby leagues? Yes, JamTimer includes built-in configurations for major roller derby organizations such as WFTDA, RDCL, and OSDA. It can also be customized for various scrimmage and tournament formats. ### How much does JamTimer cost? JamTimer is available for a one-time purchase of $1.99. This price grants you full access to all its features without any recurring fees or additional in-app purchases. ### What devices is JamTimer compatible with? JamTimer is supported on iPhone and iPod devices. It is designed for iOS operating systems. ### How frequently is JamTimer updated? The latest version of JamTimer, 4.2.1, was released on August 24, 2020. While updates may not be frequent, the app is stable and functional for its intended purpose. ### What is the age rating for JamTimer? JamTimer has an age rating of 4+. This indicates it is suitable for users of all ages and does not contain any mature content. ### Does JamTimer have ads? No, JamTimer does not contain advertisements. As a paid application, it offers an uninterrupted user experience focused solely on its timing functionalities. ### What makes JamTimer easy to use during a game? JamTimer features large, conveniently placed buttons designed for one-handed operation. It also provides subtle vibrate warnings for specific game events, allowing timers to stay focused on the action. ## Version history (last 5 releases) ### 4.2.1 — 2020-08-24 • Minor fixes and improvements. ### 4.2 — 2020-08-12 • Updates for compatibility with iOS 13. • Support for all current iPhone and iPad device sizes. • Added support for dark mode. ### 4.1 — 2017-11-12 • Updated for iOS 11 and the iPhone X. App Store reviews are very helpful. If you think JamTimer is worthy, please take a moment to write a review. Thank you for supporting JamTimer! ### 4.0.1 — 2017-04-27 • Fixed home screen icon when installed on an iPad. App Store reviews are very helpful. If you think JamTimer is worthy, please take a moment to write a review. Thank you for supporting JamTimer! ### 4.0 — 2017-04-24 • Added support for current device screen sizes. • Visual refresh and new icons. App Store reviews are very helpful. If you think JamTimer is worthy, please take a moment to write a review. Thank you for supporting JamTimer! ## Apps similar to JamTimer | App | Rating | Price | Category | | --- | --- | --- | --- | | [Dual Slalom Timer](https://appshunter.io/ios/app/dual-slalom-timer/id6479360277) | — | $0.99 | Sports | | [CrewTimer Regatta Timing](https://appshunter.io/ios/app/crewtimer-regatta-timing/id1450216565) | 4.9 (9) | Free | Sports | | [RefClock Timer](https://appshunter.io/ios/app/refclock-timer/id6476637373) | 4.5 (2) | Free | Sports | | [Personal Interval Timer](https://appshunter.io/ios/app/personal-interval-timer/id1479646964) | 4.8 (14) | Free | Sports | | [R4 Football Progression Timer](https://appshunter.io/ios/app/r4-football-progression-timer/id1570152397) | 4.8 (11) | Free | Sports | | [Jam Timer - Roller Derby Timer](https://appshunter.io/ios/app/jam-timer-roller-derby-timer/id6747149650) | 1.0 (1) | $3.99 | Sports | ## More apps by Fearless Code - [PenaltyTimer](https://appshunter.io/ios/app/penaltytimer/id312416738) All apps by Fearless Code: https://appshunter.io/developer/312416741 ## Related topics [fearless code](https://appshunter.io/ios/topics/fearless-code) · [roller derby](https://appshunter.io/ios/topics/roller-derby) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*