Read fine print first

If you want it to sync with fitbit app.. It does a mediocre job.

If you want it to sync with challenges..does not work.

The step count is far from accurate. I have it synced with my Apple Watch. It logs a "workout" basically. Example: my Apple Watch is reading 2,566 steps for today. After syncing with the Fitbit app it only shows a 0:10 min walk???? And 1,022 steps. Totally not with the $3! I want a refund

Hooverxoxo about Sync Solver - Health to Fitbit