Just like everything else, hand grips strengtheners are getting smarter all the time. The Gripsner is an app connected hand grip trainer that combines with your phone to let you play games and control your content. It comes with up to 30lbs of resistance. 5 games are available for it but you can also use it to browse YouTube Shorts or take photos.
More gadgets like this: here
The Gripsner has games that support a 2-player mode. You can also use it to adjust volume. It runs for 300 hours on battery. You can find it on Kickstarter at this time.
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