In PickCrafter you have the ability to upgrade your Pickaxes. To access this feature, you have to be at least Prestige 1.

Navigate to the Pickaxe menu and tap on one of the Pickaxes you want to upgrade. If the upgrade is available, you will see a button pointing up. Tap it, and it will level up and play the Upgrading Animation.

If you are several levels behind, no worries, we got you!
You can upgrade multiple levels at once. Some Pickaxes require Runic to be upgraded.