SIGMA LINK vs e
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.
e
This app syncs with compatible e-bike devices to display riding information and record your activities. It tracks your rides using phone GPS, saving them as FIT files that can be uploaded to Strava. You can also connect a heart rate monitor for more detailed data.
- Large sync display
- Personal sub screen
- Vertical or horizontal display options
- E-bike information sync
- GPS riding activity recording
- Strava auto/manual upload
- Heart rate monitor integration
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Features: App have large sync display and self selectable personal sub screen selectable vertical or horizontal display. If APP connection with specify e-bike device, the e-bike information will sync display on the app. App using phone and GPS to record your riding activity as FIT file, you can auto/manual upload it to your STRAVA account. For review or share activities to your friends. If APP connection with Echowell Bluetooth heart rate monitor, will display riding information on the app. You can review or edit your activity records on the app. App auto summary you total activity information by the week , month , Year for you reference. Compatible Device : YAMAHA Display C YAMAHA Interface X ECHOWELL STD200 ECHOWELL STD700 ECHOWELL DMH30
Screenshots
Verdict
The clearest difference is rating: e at 5.0 against SIGMA LINK's 1.5. SIGMA LINK's advantage is ratings volume (8 vs 1) and iOS requirement (12.0 vs 14.0). On price, review sentiment, update cadence 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
e holds the better App Store score, 5.0 against 1.5. That said, the two scores are not equally well evidenced: SIGMA LINK has 8 ratings behind it against 1, 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 17% of e's.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | SIGMA LINK | e |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (8 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 9.0% of reviews | 16.7% of reviews — better |
| Number of ratings | 8 — better | 1 |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 76 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | SIGMA-ELEKTRO GmbH | ECHOWELL ELECTRONIC CO., LTD |
Customer experience
SIGMA LINK
e
In-app purchases
SIGMA LINK
No in-app purchases
e
No in-app purchases
