1.streetcomplete / StreetCompleteEasy to use OpenStreetMap editor for Android and iOSopenstreetmapsurveymappingeditorosmandroid-app+2 moreKotlinGPL-3.05.1K total479 forks+611 starsfrom 4,522 · score 6.42
2.Helium314 / SCEEOpenStreetMap surveyor app for experienced OSM contributorsKotlinGPL-3.0259 total28 forks+43 starsfrom 216 · score 3.78
3.OneBusAway / onebusaway-androidThe official Android app for OneBusAwayandroidonebusawayjavapublic-transportationtransitopen-transit-software-foundationKotlinOther license580 total401 forks+35 starsfrom 545 · score 3.58
4.grote / TransportrFree Public Transport Assistant without Ads or Trackingpublic-transportationandroid-appmapKotlinGPL-3.01.2K total208 forks+25 starsfrom 1,145 · score 3.26