# SIGMA LINK vs IRONMAN Tracker

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.

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.

## The numbers

| Metric | SIGMA LINK | IRONMAN Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (8 ratings)](https://appshunter.io/ios/app/sigma-link/id1147984544/reviews) | **[4.9 (8.1K ratings)](https://appshunter.io/ios/app/ironman-tracker/id1183983404/reviews)** |
| Number of ratings | 8 | **8.1K** |
| Positive reviews | 9.0% of reviews | **96.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free | Free |
| Best chart rank | — | **#14** |
| Size | 76 MB | 27 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SIGMA-ELEKTRO GmbH](https://appshunter.io/developer/803939887) | [Dilltree Inc](https://appshunter.io/developer/799017229) |

## What reviewers say

### SIGMA LINK

[App page](https://appshunter.io/ios/app/sigma-link/id1147984544)

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.

**Highlights:** Transfer training units, View training statistics, Track personal bests, Manage device settings, Sync with SIGMA CLOUD, Access workouts and sport profiles

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

**In-app purchases:** none


### IRONMAN Tracker

[App page](https://appshunter.io/ios/app/ironman-tracker/id1183983404)

**Currently charting:** #14 Top Free · Sports (US App Store)

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.

**Highlights:** Real-time athlete tracking, Live course maps, Track multiple athletes, Push notifications for progress, Event information and updates, Social media sharing

**In-app purchases:** none

**What reviewers like**

- 👍 Ease of use
- 🚀 Real-time tracking
- 💡 Detailed stats and notifications
- 🚀 Accurate updates
- 👍 User-friendly interface

**What reviewers complain about**

- 🐛 Occasional freezing or crashing
- 🔋 High battery consumption
- 🗺️ Inaccurate map positioning
- 🕰️ Time delays in updates

**Reported bugs**

- Inconsistencies in leaderboard display
- Difficulty disabling event notifications

**Requested features**

- 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


## Frequently asked questions

### Is SIGMA LINK free?

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

### Is IRONMAN Tracker free?

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

### Which has better reviews, SIGMA LINK or IRONMAN Tracker?

IRONMAN Tracker is rated higher. SIGMA LINK averages 1.5 out of 5 from 8 ratings, while IRONMAN Tracker averages 4.9 from 8.1K ratings.

### Do SIGMA LINK or IRONMAN Tracker have ads?

Neither SIGMA LINK nor IRONMAN Tracker shows ads.

### Which is updated more often, SIGMA LINK or IRONMAN Tracker?

SIGMA LINK ships an update every 4 months, and IRONMAN Tracker every 6 months. Most recently, SIGMA LINK was updated on October 16, 2026 and IRONMAN Tracker on October 18, 2026.

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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.*