The whole situation can easily be confusing, especially if you read the whole topic here, as things were changing quite dynamically. From my understanding, the final conclusion is that everyone eventually agreed to work together on a single Android application under https://github.com/researchxxl/syncthing-android. Alternatively, there is an experimental Android version of https://martchus.github.io/syncthingtray, or you can also run Syncthing from a command line using Termux.
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