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Inertia X1

Paolo Gallo · Sports
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App info

Developer
Paolo Gallo
Category
Sports, Utilities
Released
Sep 15, 2026
Version
v1.4.0 (Sep 15, 2026)
Price
Free
Size
3.6 MB
Requires
iOS 15.0
Age rating
4+
Languages
English

In-app purchases

none
Current prices, App Store US.

About Inertia X1

Inertia X1 is a professional application for measuring the swingweight of tennis rackets. The app is designed to work in conjunction with the Inertia X1 measuring instrument by Pagal Lab, which uses an oscillating support to precisely determine the moment of inertia of the racket around the swing axis. KEY FEATURES • Swingweight measurement (moment of inertia around the handle axis) • Twistweight calculation (difference between swingweight and spinweight) • Recoilweight and polarization index calculation • Built-in digital level for correct instrument positioning • Racket archive with measurement history • Data export in JSON format HOW IT WORKS The racket is mounted on the Inertia X1 instrument and set into oscillation. The smartphone's gyroscopic sensor detects the oscillation period and the app automatically calculates all dynamic parameters. The procedure takes only a few seconds…
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