SIGMA LINK vs IRONMAN Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SIGMA LINK
Easily transfer training data from compatible devices to your smartphone. View personal bests, statistics, and completed tracks. Sync all your training data, workouts, and sport profiles with cloud integration for constant access.
- Transfer training units
- View training statistics
- Track personal bests
- Manage device settings
- Sync with SIGMA CLOUD
- Access workouts and sport profiles
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The SIGMA LINK App is your supplement to the DATA CENTER and the fastest and easiest way to access your training data. With SIGMA LINK, you can transfer all your training units from a compatible SIGMA product to your smartphone. In addition to this, device settings can be made directly in the app. Besides the individual trainings, the app also shows you personal best performances, training statistics as well as completed tracks. With the SIGMA CLOUD integration, you can sync all your training data, workouts, sport profiles and tracks now with the new LINK App. So your data is available on your iPhone all the time. Enjoy the new SIGMA LINK App! NOTE: Apple doesn't support NFC. If you want to show your data from another bike computer, please use our SIGMA CLOUD to sync your data.
IRONMAN Tracker
Follow your favorite athletes in real-time during select IRONMAN and IRONMAN 70.3 events. Spectators can view live results, track progress on course maps, and receive important event updates.
- Real-time athlete tracking
- Live course maps
- Track multiple athletes
- Push notifications for progress
- Event information and updates
- Social media sharing
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IRONMAN Tracker provides official real-time athlete tracking for select global IRONMAN and IRONMAN 70.3 endurance events. We bring the excitement of race day to spectators and fans by delivering real-time results for professional and age-group racing. Features: -Track an athlete’s times, paces, split estimates, and division placement in real time -Interact with live maps of the course -Track multiple athletes at the same time -Receive push notifications as progress is made -Follow important event information and updates -Share updates to various social media platforms
Screenshots
Verdict
The clearest difference is review sentiment: IRONMAN Tracker at 96% against SIGMA LINK's 9%. IRONMAN Tracker also leads on rating (4.9 vs 1.5) and ratings volume (8.1K vs 8). On price, update cadence, ads and in-app purchases 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.
IRONMAN Tracker holds the better App Store score, 4.9 against 1.5. That said, the two scores are not equally well evidenced: IRONMAN Tracker has 8.1K ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 9% of SIGMA LINK's written reviews are positive against 96% of IRONMAN Tracker's.
SIGMA LINK ships an update every 4 months, IRONMAN Tracker every 6 months. The most recent releases landed on October 16, 2026 and October 18, 2026 respectively.
| Parameter | SIGMA LINK | IRONMAN Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (8 ratings) | 4.9 (8.1K ratings) — better |
| Positive reviews | 9.0% of reviews | 96.4% of reviews — better |
| Number of ratings | 8 | 8.1K — better |
| Update frequency | Every 4 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #13 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 76 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | SIGMA-ELEKTRO GmbH | Dilltree Inc |
Customer experience
SIGMA LINK
IRONMAN Tracker
Bugs and requests
SIGMA LINK
Not enough reviews yet to summarise bugs or requests.
IRONMAN Tracker
Reported bugs
2 issues- Inconsistencies in leaderboard display
- Difficulty disabling event notifications
Requested features
5 requests- Add option to view individual event distances (swim, bike, run) separately
- Improve map functionality to show street names and course layout
- Implement a 'you are here' indicator on the map
- Add live video feed of finish line
- Allow users to post encouragement to athletes during the race
In-app purchases
SIGMA LINK
No in-app purchases
IRONMAN Tracker
No in-app purchases
