One purchase covers both platforms — whichever store you bought from. Drag your copy of Off My Phone from your Applications folder onto this page, and we'll verify your App Store purchase (it's cryptographically signed by Apple) and hand you a Windows license key on the spot.
Drag the Off My Phone app here
or drop its App Store receipt file — nothing is uploaded except the receipt Apple already gave you
Prefer email? Send your receipt to redeem@offmyphone.com and a human will sort you out.