FujiFilm’s Instax printers all use its Instax Mini instant film which typically costs around $30 for 20 sheets, or about $1.50 per photo. To print, you need to download the “Instax Mini Link” app ...
E Ink devices running Android can technically use any app, but there are some that work better than others.
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Proton Pass

Sleek and easy-to-navigate free password management apps for Android and iOS ...
The Liene PixCut S1 is a photo and sticker printer that works beautifully with your phone for custom stickers.