Graft for iPhone
Email grahamegee+graft@gmail.com and you'll get a reply from a person.
There is no account to recover and no subscription to cancel, so most of what a support page usually exists for doesn't apply here.
It helps to include your iPhone model, your iOS version, and what you were doing when it went wrong — which screen you were on, and what you expected to happen instead. If it involves a heart rate strap, the make and model of the strap is worth mentioning too.
Graft works with any strap that supports the standard Bluetooth Low Energy Heart Rate Service. That covers most chest straps and armbands sold today. Pair the strap in Graft itself rather than in the iPhone's Settings app — standard heart rate straps don't appear in the iOS Bluetooth list, which is normal and not a fault.
Heart rate is entirely optional. Every other feature works without a strap.
On your phone, and nowhere else. Graft has no account system and no server, so there is nothing to sign into and nothing held by us to delete on request. Deleting the app removes its data from your device along with it.
Workouts and exercises you delete inside the app go to Recently Deleted first, so an accidental deletion can be undone.
iPhone running iOS 17 or later. A Bluetooth heart rate strap is optional.