CSX vs Sonra Watch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CSX
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The correct management of concussion data is critical in providing a high standard of care. CSX makes the collection of data, comparison to baselines and sharing of results easy. CSX utilizes multimodal tasks to collect cognitive data. Each task takes between 2-10 minutes. The CSX offering allows parents, coaches, trainers and health care practitioners to track brain health and share data on a secure platform. The platform contains the following Elite HIA protocols: • World Rugby Protocols • NRL Protocols • AFL Protocols • England and New Zealand Cricket Protocols • Soccer Protocol • New Zealand Rugby Rugby Smart CSX custom protocol. For the community level CSX General protocols includes: • Baseline tasks (pre-season), • Suspected Concussion logging and notifications • Post-injury and recovery assessments with comparison to the baseline • At home symptom tracking • Out of play activity calendar • Game-based brain tasks • UNLIMITED assessments and report sharing • Cloud always available storage • Doctor Code CSX is not intended to diagnose concussions or make return-to-play decisions. CSX is a tool to be used to collect data and help with the management of concussion as set out in concussion protocols. A complete concussion and return-to-play assessment should not be made based on the data in the app alone, and should only be made after a user has received a medical examination by a qualified healthcare professional. HealthKit data may be accessed when using the app in the Research Environment.
Sonra Watch
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.
- 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
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PERFECT FOR RTP, REHAB AND CONDITIONING SESSIONS With 25 real-time metrics updating for up to 8 players, the Sonra Watch app is perfect for Return to Play, Rehab and Conditioning sessions. 28 REAL-TIME METRICS Sonra Watch app displays 28 real-time metrics split into Distance, Speed, HR & Accelerometer groups. SET MULTIPLE THRESHOLDS FOR DIFFERENT PLAYERS Set individual or global thresholds for each player and monitor how they perform with threshold scales. RECEIVE THRESHOLD NOTIFICATIONS Receive notifications with haptic feedback when players reach their thresholds ensuring no players get overloaded. MULTIPLE COACHES Live data for up to 8 players can be viewed on multiple Apple Watch devices at the same time. COMPARE YOUR PLAYERS Quickly compare your players with our Customisable Live Carousel view. REVIEW LAST SESSION Access your latest session to review data anywhere. ONBOARD METRIC PROCESSING Metrics are calculated and processed on the Apex device and transferred to the Sonra Watch App via Bluetooth, ensuring accurate live data and no data loss when players go out of range. GUARANTEED NO DATA DROP-OUT The Apex is the only device that calculates metrics on the unit. We ensure no data drop-out when an athlete goes out of range during a session. FULLY CUSTOMISABLE Set your preferred unit of measurement and custom threshold scale. PACEMAKER Pacemaker Steady State mode monitors the current speed of an individual during work periods of custom workouts so that the athlete remains on pace within set custom high and low % limits of their target pace. Pacemaker Intervals mode allows a user to predetermine work & rest times, that can be used for all types of interval training. Coaches can input their desired workout options through custom work and rest periods and number reps and sets. STOPWATCH Use the built-in stopwatch for your drills. SUPPORTED DEVICES Sonra Watch App supports Apple Watch Series 2+ Series 3+ watches supports a max of 8 concurrent players Series 2 watch supports 1 player This app uses Apple HealthKit API in order to be able to communicate with the APEX device over Bluetooth while the app is running in the background. This continuous communication with the APEX device will allow the app to continue receiving realtime and up to date data to display on the app's user interface.
Screenshots
Verdict
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.
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.
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.
| Parameter | CSX | Sonra Watch |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.7 (3 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPod, Apple Watch — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 34 MB | 22 MB |
| Age rating | 12+ | 4+ |
| Developer | HITIQ LIMITED | Statsports International Limited |
In-app purchases
CSX
No in-app purchases
Sonra Watch
No in-app purchases








