Foliata identifies plants from a photo right on your device. After you download a regional pack, plant cards work offline, and you can keep a personal herbarium of the plants you find. An optional online second opinion is off by default. Free plan includes 3 identifications a day; Premium is optional. Made by Apis Systems LLC, an indie developer. Also on Google Play: https://play.google.com/store/apps/details?id=com.apissystems.foliata