Xp Crystal Add-on 1.21+

Experience is a very important thing both in life and in the world of Minecraft Pocket Edition. Therefore, it needs to be managed properly: for this, the mod Xp Crystal offers a Crystal for storing experience. You can save experience in the crystal and then use it for repairing items with the "Mending" enchantment or restoring levels. The crystal also automatically saves experience upon death if it is in the inventory.

Controls

Use: store experience

Crouch + use: gain experience

Crouch + use + look down: create Experience Orbs

You can store 10,252 experience, which is equal to 64 levels.