The best alternatives to Cling are Gamba!, The Manuva Board, and The Climb. If these 3 options don't work for you, we've listed a few more alternatives below.
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The Manuva Board. A fixtureless and freely installed hangboard that makes training for rock climbing easier than ever before. Calling all rock climbers stuck indoors! This brand new rock climbing training product just nailed their funding in 24hrs!
StrengthBot is the most simple and easy-to-use workout tracker you will find that syncs with iCloud. Add an exercise, add an entry, StrengthBot will display all your entries, making it easy to track your progress in the form of graphs and personal bests.
Instead of checking weather reports for a dozen climbing areas, just use your current location to find what areas around you are in prime time. Use filters to avoid crowds, climb the style you like and keep out of the mountain snow when the temps look good.
Ascend is a visually dynamic way to track the stairs you climb each day. It integrates with Apple Health and uses stair climbing data from your iPhone or Apple Watch to create beautiful graphs.