JamTimer vs RollerCon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JamTimer
This app is a dedicated tool for roller derby jam-timers, replacing traditional stopwatches. It offers pre-set configurations for major leagues and allows for custom settings for any game scenario. Large buttons and vibration alerts ensure easy operation during fast-paced matches.
- Roller derby jam-timing
- WFTDA, RDCL, OSDA configurations
- Custom game settings
- One-hand operation
- Vibrate warnings
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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.
RollerCon
Discover and organize your schedule for a major convention. Favorite specific sessions, filter by interest, and receive timely updates. Never miss an important event with customizable alerts.
- View all convention events
- Favorite select events
- Filter events by category
- Set reminder alerts
- Receive important updates
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This app allows you to view all the events taking place at RollerCon, favorite select events to return to, and filter events by category. You can also set reminder alerts and receive important updates on the fly!
Screenshots
Verdict
The clearest difference is price: RollerCon at Free against JamTimer's $1.99. RollerCon also leads on update cadence (every 5 weeks vs every 5 months). JamTimer's advantage is chart position (#200 vs unranked). On rating, review sentiment, ratings volume and ads 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
RollerCon is free to download; JamTimer costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for JamTimer against 5.0 for RollerCon. Both are backed by a comparable volume of ratings — 9 and 20 respectively. Written reviews are what separate them: 94% of JamTimer's written reviews are positive against 100% of RollerCon's.
JamTimer ships an update every 5 months, RollerCon every 5 weeks. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.
| Parameter | JamTimer | RollerCon |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 5.0 (9 ratings) | 5.0 (20 ratings) |
| Positive reviews | 93.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 9 | 20 — better |
| Update frequency | Every 5 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #200 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 82 MB |
| Age rating | 4+ | 12+ |
| Developer | Fearless Code | Amy Fan |
Customer experience
JamTimer
RollerCon
In-app purchases
JamTimer
No in-app purchases
RollerCon
No in-app purchases
