Digging on smartphone is possible, but very annoying. The tiny buttons are not making things easy. I tried a few times, I wouldn't recommend it. And my fingers are tiny
I'd rather have cupcakes and apples in the knuffels' rooms, ready for digging any time I decide to do it, because my digging is pretty spontaneous and I want to keep it as fast as possible. I dig with all my knuffels and I have a lot of them, so even using happy pills every time to prepare for digging would be "not worth the effort"
I know my digging sessions last about 10 minutes without the feeding/playing. I know clicking a fewhappy pills wouldn't be that much time, but... did I mention I'm lazy?