# SIGMA LINK vs TQ E

The clearest difference is rating: TQ E at 2.7 against SIGMA LINK's 1.5. TQ E also leads on review sentiment (22% vs 9%). SIGMA LINK's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TQ E holds the better App Store score, 2.7 against 1.5. Both are backed by a comparable volume of ratings — 8 and 14 respectively. Written reviews point the same way: 9% of SIGMA LINK's written reviews are positive against 22% of TQ E's.

SIGMA LINK ships an update every 4 months, TQ E every 2 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | SIGMA LINK | TQ E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (8 ratings)](https://appshunter.io/ios/app/sigma-link/id1147984544/reviews) | **[2.7 (14 ratings)](https://appshunter.io/ios/app/tq-e-bike/id1597303825/reviews)** |
| Number of ratings | 8 | **14** |
| Positive reviews | 9.0% of reviews | **22.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 76 MB | 124 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [SIGMA-ELEKTRO GmbH](https://appshunter.io/developer/803939887) | [TQ-Systems GmbH](https://appshunter.io/developer/880072606) |

## 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


### TQ E

[App page](https://appshunter.io/ios/app/tq-e-bike/id1597303825)

Customize and control your TQ-powered e-bike with this app. Adjust motor settings, personalize your riding modes, and monitor key bike information like battery status and odometer. The app offers a user-friendly interface for a tailored cycling experience.

**Highlights:** Bluetooth connectivity, Motor tuning and customization, Riding mode adjustment, Display customization, Battery status monitoring, Odometer tracking

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SIGMA LINK free?

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

### Is TQ E free?

TQ E is free to download, with no in-app purchases.

### Which has better reviews, SIGMA LINK or TQ E?

TQ E is rated higher. SIGMA LINK averages 1.5 out of 5 from 8 ratings, while TQ E averages 2.7 from 14 ratings.

### Do SIGMA LINK or TQ E have ads?

Neither SIGMA LINK nor TQ E shows ads.

### Which is updated more often, SIGMA LINK or TQ E?

SIGMA LINK ships an update every 4 months, and TQ E every 2 months. Most recently, SIGMA LINK was updated on November 2, 2026 and TQ E on November 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*