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Download the J17 Performance – Markham App today to plan and schedule your classes! From this mobile App, you can view class schedules and sign up for classes as well as view the studio’s location.
Optimize your time and maximize the convenience of signing up for classes from your device!
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What's New in J17 Performance
8.800.0
August 11, 2026
We cleaned up a few bugs affecting checkout, calendar syncing, and payment options. Nothing flashy here — just steady, quiet progress.