Free climbing training apps. They all run in the browser, work offline once loaded and keep everything on your own device.
Voice controlled endurance training for a home wall. Say "next" and it calls out the next limb and hold colour, with an optional trad mode for placing gear and building belays.
The Metolius ten minute rock ring workout, timed and read out as you go. Easy, original and hard plans, and a log of past sessions.
A digital version of the paper tick list for the 24 routes at the Gilford wall. Tap the climbs you got up and save the session.