Mere Medical review: an open-source, self-hosted personal health record app that aggregates records from patient portals via FHIR. Features and alternatives.
Mere Medical is an open-source personal health record application that lets individuals pull together medical records scattered across multiple hospital and clinic patient portals into one unified, searchable timeline. It is built and maintained by an independent developer and distributed freely under the MIT license.
The app connects to healthcare providers using the HL7 FHIR patient-access standard with SMART-on-FHIR authentication, the same interoperability standard many US health systems support due to federal patient-data-access regulations, meaning users do not need proprietary integrations from each hospital to consolidate their records.
Once connected to a patient portal, Mere pulls in labs, immunizations, medications, clinical notes and visit summaries, then presents them as a single chronological timeline that spans every connected provider, along with consolidated views like a full immunization history and lab-value trending across visits.
The application is offline-first and local-first, storing records directly on the user's device rather than a centralized server, and supports zero-knowledge client-side encryption, giving users full control over their sensitive health data even in self-hosted deployments.
Mere Medical is free and open source under the MIT license, with the source code publicly available on GitHub and no company operating it as a paid SaaS product.
Because the app can be run locally or self-hosted, the only potential cost is whatever infrastructure a user chooses for self-hosting; there are no subscription fees, premium tiers, or per-record charges built into the software itself.
Yes, Mere Medical is free and open source under the MIT license, with no subscription fees.
It uses the HL7 FHIR patient-access API with SMART-on-FHIR authentication, the interoperability standard supported by many US healthcare providers, to pull records directly from patient portals.
Mere Medical is local-first and offline-first, storing records directly on the user's own device rather than a centralized cloud server, with support for zero-knowledge encryption.
Mere Medical is an independent open-source project created and maintained by developer Chris Fu, with the source code publicly available on GitHub.
Only providers that support the FHIR patient-access standard with SMART-on-FHIR authentication can be connected, so coverage depends on each provider's own systems.
No, Mere Medical is an independent open-source project rather than a feature of a commercial operating system, though it serves a similar purpose of aggregating records from multiple providers using FHIR.