# HealthSync

> HealthSync is an iPhone app that syncs selected Apple Health data from HealthKit to hosted HealthSync storage or a backend the user controls.

HealthSync is a data sync utility, not a medical device. It does not provide medical advice, diagnosis, or treatment.

Canonical website: https://healthysync.app

## Setup and agent documentation

- [Documentation index](https://healthysync.app/docs/index.md): Choose a setup guide. Human-readable documentation starts at https://healthysync.app/docs.
- [Getting started](https://healthysync.app/docs/getting-started/index.md): Choose hosted storage or your own server, connect Apple Health, and verify your first sync.
- [Server setup](https://healthysync.app/docs/self-hosting/index.md): Run the HealthSync API and Postgres with Docker, or connect the API to a managed database.
- [Server operations](https://healthysync.app/docs/operations/index.md): Back up Postgres, apply updates, manage credentials, and troubleshoot sync failures.
- [Agent access](https://healthysync.app/docs/agent-access/index.md): Connect an HTTP-capable agent to your private health data using the correct endpoint and credential.

## Primary pages

- [Apple Health app sync guide](https://healthysync.app/apple-health-app-sync): How HealthSync reads selected HealthKit data on-device and uploads queued JSON batches to a private API.
- [Apple Health sync alternatives](https://healthysync.app/apple-health-sync-alternatives): A sourced comparison of private-API, webhook, and export options.
- [Privacy policy](https://healthysync.app/privacy): What HealthSync may process and how users control Health permissions.
- [Support](https://healthysync.app/support): Setup and troubleshooting guidance for HealthKit permissions and backend sync.
- [App Store listing](https://apps.apple.com/in/app/healthysync/id6776575569): Download HealthSync for iPhone.
- [Source repository](https://github.com/megabyte0x/healthykit): Open source code and implementation context.

## Facts

- Apple Health permissions are requested only inside the iOS app.
- Users choose which supported HealthKit data types to sync.
- The website does not read or store Apple Health data.
- The configured backend URL and token determine where selected data is sent.
- Standard self-hosted API_TOKEN credentials permit uploads and reads; they are not read-only agent credentials.
- Hosted agents use the complete private agent endpoint and a separate read-only agent token. Preserve any URL path prefix.
- Never request database credentials or ingest tokens for a read-only agent integration.

Last reviewed: 2026-10-22