4 stars: Good app to a point but doesn't do much. It only lete sync one app. And once I got that working it stoped there. If you have more then one app that syncs with the receiving app it screws up the data. So if you just want it for one app then it does the job. But otherwise it's just not enough to be useful.
4 stars: Mostly good. I purchased the one time / lifetime subscription. Everything works good, except sometimes it doesn't sync my sleep data properly. This is syncing from a Galaxy watch 4 classic / Samsung health to Google fit, on a Samsung S20 FE phone. It does get my fitness / step info correct. I do like the historical sync when you buy the full version.
3 stars: Just started using this app about a week or two ago to sync Garmin Connect Data to Google Fit (then eventually to UHC Motion). Worked perfectly until the latest update. It used to sync immediately after Gamin Connect would sync with my watch. Now I have to manually start Health Sync. I am losing data in the chain. I hope this gets fixed soon.
2 stars: App works, more or less. I paid the subscription and even then I couldn't make historical sync work. New data it syncs, but not old data. I tried changing the parameters, the dates I wished to syncs, but even then it didn't work.
2 stars: Draining my battery the last week or so, constantly trying to sync unsuccessfully. I had to restrict the battery usage to stop it draining my phone battery so its redundant now. No longer syncs with my Fit...