Ape Index turns bouldering sends into banana math

Field notes

Users can add a problem from a photo, selecting its hold colour, level and wall; optional start and finish markers help distinguish it, and the app checks whether someone has already entered it. Session records include tries, sends, flashes, notes and stars, then can be shared as an image. The homepage says data saves on the phone without signal and syncs later; its example gym, The Font Hounslow, uses labels ranging from Lemon & Herb to Inferno.