This app shows OSM maps from a selectable sources (OSM or Elbe5). You can create notes add and edit photos, audios, videos and tracks in GPX format, take photos, add record own audios, videos and tracks. It has list views of all attached items. It can synchronize all of this via iCloud or backup files with the desktop app.
This app is the successor of 'Maps for OSM' by this author. It has a different data structure and different features, so it had to become a new app. But you can import data from older backup files.
This app is not affiliated with OpenStreetMap, but the use of this name has been approved.
This app is Open Source, the code is published at https://github.com/mr-elbe5/OSM-Maps.
If you find any problems or missing features, please let me know!