Been a big fan of it for a handful of years too now. Huge shame that it doesn’t work on iOS because of completely arbitrary limitations. One of my sync groups just handles my entire photo library
Besides Apple’s current restrictions we don’t have a decent iOS Syncthing because there’s no financial initiative for anyone to build a good iOS App. For instance, the apps on the store seem to never have tried to properly implement background refresh. Yes it doesn’t solve all issues and it won’t be like an Android phone but it could allow for for full syncs when the phone is charging / at night and some sync time on battery.