MapThePaths (www.mapthepaths.org.uk) is a project to add all the rights of way (RoWs) and permissive paths in England and Wales to OpenStreetMap fully tagged. This accompanying app helps you find the locations of RoWs from council-supplied data while actually out surveying in-the-field, helping you locate where there are missing paths or paths without a designation tag on OSM.
By logging into OSM and using the live-edit mode (which works with the live OSM API), the app also allows you to change the designation of existing OSM ways by long-pressing them. This should *only* be done via on-the-ground observations, as the licensing of some council data does not permit direct copying of the designation from the council data to OSM.
The app also has an experimental feature to auto-create brand new ways on OSM by performing a GPS survey. You record a GPS survey and select the RoW designation and path type (grass path, gravel track etc) as you go. You can then auto-generate OSM ways from your survey; these are then auto-connected to existing OSM ways where possible, and uploaded to OSM (together with the full GPX trace if desired).
Please use this with caution - note that the result may have some artefacts (particularly due to GPS inaccuracy and not joining terminals of your new ways to existing ways correctly) so please double-check and refine these auto-created ways on JOSM or another mainstream editor afterwards. Your uploaded GPX trace can help with this.
This is FOSS software, licensed under the GPL v3; see https://gitlab.com/nickw1/mapthepaths-android for source code.