Can I save progress?

Oh, well... Can I save current wallpad and create another one? And then return to work with it?

P.S. Can't buy Pro now ;-;

Kustom always saves a backup snapshot every time you save and you can return to it pressing the "restore" icon close to the save button. You can also export but if you export you wont be able to import again without PRO while restore works on free too.