# SIGMA LINK vs rad

The clearest difference is review sentiment: rad at 44% against SIGMA LINK's 9%. rad also leads on update cadence (every 2 months vs every 4 months). SIGMA LINK's advantage is iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

SIGMA LINK ships an update every 4 months, rad every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SIGMA LINK | rad |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (8 ratings)](https://appshunter.io/ios/app/sigma-link/id1147984544/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 9.0% of reviews | **44.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 76 MB | 69 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SIGMA-ELEKTRO GmbH](https://appshunter.io/developer/803939887) | [rad-net GmbH](https://appshunter.io/developer/1594439669) |

## 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


### rad

[App page](https://appshunter.io/ios/app/rad-net/id1594439667)

Stay informed about cycling news, race reports, and access your license digitally. Covers German and international cycling across all disciplines, from youth to professional levels.

**Highlights:** Cycling news and race reports, Digital license access, German and international cycling coverage, Push notifications for selected disciplines, Official portal for German Cycling e.V.

**Features:** macOS Compatibility, 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 rad free?

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

### Do SIGMA LINK or rad have ads?

Neither SIGMA LINK nor rad shows ads.

### Which is updated more often, SIGMA LINK or rad?

SIGMA LINK ships an update every 4 months, and rad every 2 months. Most recently, SIGMA LINK was updated on November 2, 2026 and rad on November 3, 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.*