Very poor installation and user experience – Altimeter+ Review

A complete hack job of an app. Will not correctly install on watch 5 with cellular. Many circular error messages. No english language support. Barometric pressure at US airports is in inches, and no way to enter the local pressure to calibrate. Watch says “Requires iPhone. Please launch “altimeter plus” on iphone to complete setup. Did that. Nothing. Dead end. Deleted. Reinstalled. Both on phone and watch. Nothing. Phone app will not function until both phone and watch are rebooted. Serious pairing problems. Watch app will not work without phone.
Review by Fut the whuck? on Altimeter+.