Joy-Cons have some of the best haptic motors ever put in a consumer device. They come in pairs. So I turned them into a bilateral stimulation tool for EMDR therapy.

The app pairs to your Joy-Cons over Bluetooth (no Switch needed), alternates pulses left-right at whatever speed and intensity you set, and gets out of the way. No account, no analytics, runs entirely on your iPhone.

Existing BLS devices are either wired buzzers from 2003 or $200 proprietary hardware. This is neither.

Demo + info: therajoyapp.com