Fastest route to an answer.
SyncFit is built by a very small team. The pages below answer nearly everything within a minute; email takes days. Start here.
Almost always a permissions setting on the iPhone.
What History’s error text means and how to fix it.
Step-by-step guides for every destination and the Mac.
Request format, schema, tables, reference receiver.
Restore purchases, sign-in, Apple refunds.
Where data goes, what deleting removes.
Troubleshooting
SyncFit shows no readings.+
Open the iPhone Settings app → Health → Data Access & Devices → SyncFit and turn on the categories you want. Then pull to refresh on Home. Readings appear only for types that have data in Apple Health.
Connect Apple Health does nothing.+
iOS shows the permission sheet only once per type. If it was dismissed, grant access from Settings → Health → Data Access & Devices → SyncFit instead.
A database export fails.+
Use Test connection in the destination editor. It distinguishes connection refused, authentication and schema errors. Confirm the host is reachable from your phone's network, the user can create tables in the syncfit schema, and TLS settings match your server.
The REST endpoint returns an error.+
SyncFit shows the HTTP status it received. 401 or 403 means the bearer token or headers are wrong. 413 means your server rejected the body size; lower the batch size. 5xx and 429 are retried automatically with backoff. See the API documentation for the exact request format.
iCloud Drive export says pending or not found.+
iCloud needs to finish uploading. Open the Files app, check the SyncFit folder, and confirm iCloud Drive is enabled for SyncFit in Settings → Apple ID → iCloud.
The Mac shows fewer days than my iPhone.+
Mac sync sends the history window chosen in iPhone Settings → Mac sync. Increase it to Last year or All available history and send again.
Still need a human?
Use the contact form and pick the closest subject. Include your app version (bottom of Settings), your device, and the exact error text. Messages that skip the FAQ are answered with a link to it, so it really is faster to look first.
Open the contact form