# SIGMA LINK vs CycleHUD

The clearest difference is update cadence: CycleHUD at every 10 days against SIGMA LINK's every 4 months. SIGMA LINK's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases and device support 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, CycleHUD every 10 days. The most recent releases landed on October 7, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SIGMA LINK | CycleHUD |
| --- | --- | --- |
| 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 | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 76 MB | 7 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [SIGMA-ELEKTRO GmbH](https://appshunter.io/developer/803939887) | [Carly Robinson](https://appshunter.io/developer/1896711689) |

## 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


### CycleHUD

[App page](https://appshunter.io/ios/app/cyclehud/id6784582667)

**Features:** macOS Compatibility, Apple Watch app, 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 CycleHUD free?

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

### Do SIGMA LINK or CycleHUD have ads?

Neither SIGMA LINK nor CycleHUD shows ads.

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

SIGMA LINK ships an update every 4 months, and CycleHUD every 10 days. Most recently, SIGMA LINK was updated on October 7, 2026 and CycleHUD on September 29, 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.*