TennisFlow AI Model Performance & Release Notes

TennisFlow publishes its AI performance data transparently. Instead of vague claims like “AI-powered,” we show measurable results for our models on a validated dataset.

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AI Model Performance

Structured results of the current TennisFlow models on the internal validation dataset.

Current results

As of · App version 1.2.5

Current TennisFlow AI results (as of August 30, 2026, app 1.2.5) on the internal validation dataset.
Task Metric Result
Stroke Detection Precision 98.8 %
Stroke Detection Recall 97.9 %
Stroke Detection F1 Score 98.4 %
Stroke Type Classification Accuracy 99.83 %
Stroke Detail Classification Accuracy 95.7 %
Show earlier results

Results from August 5, 2026

First published benchmarks · App version 1.2.4

TennisFlow AI results from August 5, 2026 (app 1.2.4) on the internal validation dataset.
Task Metric Result
Stroke Detection Precision 97.66 %
Stroke Detection Recall 97.73 %
Stroke Detection F1 Score 97.70 %
Stroke Type Classification Accuracy 99.9 %
Stroke Detail Classification Accuracy 95.9 %

The results are measured on TennisFlow’s internal validation dataset using manually annotated ground-truth data.

Why do we publish our AI metrics?

Many apps promote “AI” without making its quality measurable. At TennisFlow, we want to be transparent. That is why we regularly publish the performance data of our AI models and document their progress with every release.

Release Notes

Chronological overview of app versions – newest first.

Version 1.2.5

  • More pro comparisons – In addition to David T., you can now also use Lillie W. as a female pro role model. Compare your strokes from the same perspective and browse all available pro clips.
  • Easier sign-in – Alongside Apple Sign-In, you can now create an account with an email link – no password required. Especially useful for work iPhones and kids’ phones where Apple Sign-In may not be available.
  • Even better racket detection – Our newly trained AI model detects your racket more reliably – even with strong occlusion.

Version 1.2.4

  • Apple Watch recording control – Optionally control TennisFlow recordings directly from your Apple Watch – your iPhone remains the main camera.
  • Improved recording workflow – Recording preparation is clearer and simpler.
  • Portuguese UI – TennisFlow is now available in 6 languages: German, English, French, Spanish, Italian, and Portuguese.

Version 1.2.3

  • Multiple player profiles per account – ideal for families and coaches
  • Improved racket detection (+2 %)
  • Better stroke recognition

Version 1.2.2

  • Stability and performance improvements
  • Finer filtering and sorting of video clips

Version 1.2.1

  • Bug fixes and UI improvements
  • Improved analysis overview