# CSX vs Sonra Watch

CSX and Sonra Watch are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CSX ships an update every 2 months, Sonra Watch every 3 months. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | CSX | Sonra Watch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/sonra-watch/id1503020611/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | — | Free |
| Size | 34 MB | 22 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [HITIQ LIMITED](https://appshunter.io/developer/1436244946) | [Statsports International Limited](https://appshunter.io/developer/1188732856) |

## What reviewers say

### CSX

[App page](https://appshunter.io/ios/app/csx/id1460484546)

**In-app purchases:** none


### Sonra Watch

[App page](https://appshunter.io/ios/app/sonra-watch/id1503020611)

This app provides real-time performance metrics for up to 8 players during training and rehabilitation sessions. It allows coaches to set custom thresholds, receive notifications, and compare player performance. Data is processed on a connected device for accuracy and reliability.

**Highlights:** 28 real-time performance metrics, Support for up to 8 players, Customizable player thresholds, Haptic feedback notifications, Live player comparison view, Session data review, Pacemaker and stopwatch modes

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is CSX free?

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

### Is Sonra Watch free?

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

### Do CSX or Sonra Watch have ads?

Neither CSX nor Sonra Watch shows ads.

### Which is updated more often, CSX or Sonra Watch?

CSX ships an update every 2 months, and Sonra Watch every 3 months. Most recently, CSX was updated on October 8, 2026 and Sonra Watch on October 11, 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.*