Comparison

Sonra Watch vs Whistle Performance

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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.

About

Whistle Performance

This platform helps sports coaches leverage machine learning and predictive analytics to gain actionable insights from performance data. It connects players and coaches to data and subjective surveys, optimizing team workflows and freeing up coaches' time for athlete development.

Highlights
  • Machine learning and predictive analytics
  • Actionable performance data insights
  • Player and coach data connection
  • Subjective survey completion
  • Optimized team workflows
  • Coach-friendly interface
Features
Read full description

Whistle Performance (formerly GPS DataViz) is a platform built by coaches for coaches. Our mission is to provide a comprehensive coach friendly machine learning and predictive analytics platform to create a common language among a team’s coaching staff, save coaches an hour+ each day and help them get actionable insight from their performance data. Our app allows players and coaches to connect to their data, fill out subjective surveys and see all the data that drives optimal performance. In a sports world where every little edge matters, we optimize a team’s workflows, freeing up coaches to spend more time where they excel and can maximize their impact: working with and training high performing athletes. Our app is only available to our customers, contact us at info@gpsdataviz.com TODAY to take your team’s performance to the next level!

Screenshots

Whistle Performance4 screens

Verdict

The call

Sonra Watch and Whistle Performance both sit at 3.7 stars, but that hides the real split: 100% of Whistle Performance's written reviews are positive against 0% of Sonra Watch's. Whistle Performance also leads on update cadence (every 8 days vs every 3 months). On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.7 for Sonra Watch against 3.6 for Whistle Performance. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews are what separate them: 0% of Sonra Watch's written reviews are positive against 100% of Whistle Performance's.

UpkeepUpdate frequency

Sonra Watch ships an update every 3 months, Whistle Performance every 8 days. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Sonra Watch versus Whistle Performance: the parameters behind the verdict, then further details
ParameterSonra WatchWhistle Performance
PriceFreeFree
Rating3.7 (3 ratings) — better3.6 (7 ratings)
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings37 — better
Update frequencyEvery 3 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size22 MB39 MB
Age rating4+4+
DeveloperStatsports International LimitedGPS DataViz

Customer experience

Sonra Watch

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Whistle Performance

All ratings7 ratings
Positive57.1%
Neutral14.3%
Negative28.6%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sonra Watch

No in-app purchases

None

Whistle Performance

No in-app purchases

Questions

Is Sonra Watch free?
Sonra Watch is free to download, with no in-app purchases.
Is Whistle Performance free?
Whistle Performance is free to download, with no in-app purchases.
Which has better reviews, Sonra Watch or Whistle Performance?
Sonra Watch is rated higher. Sonra Watch averages 3.7 out of 5 from 3 ratings, while Whistle Performance averages 3.6 from 7 ratings.
Do Sonra Watch or Whistle Performance have ads?
Neither Sonra Watch nor Whistle Performance shows ads.
Which is updated more often, Sonra Watch or Whistle Performance?
Sonra Watch ships an update every 3 months, and Whistle Performance every 8 days. Most recently, Sonra Watch was updated on October 24, 2026 and Whistle Performance on October 30, 2026.

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