We build the patient-facing apps healthcare companies run on: booking, check-in, results, EHR integration. And we move existing native apps to React Native one screen at a time, without freezing the roadmap. We built the mobile app for ZoomCare, the on-demand care provider. US-based, building mobile apps since 2015.
Chat with our team over Zoom →Before a patient meets a doctor, they meet your app. They book, check in, message the clinic, and read results on a phone, often one-handed, often not feeling well. When that flow stalls, they don't file a ticket. They call the front desk, or they find a provider whose app just works. A health app carries a higher bar: login that's fast but locked down, and information that's right every time the screen wakes up.
We rewrote ZoomCare's mobile app on React Native and rebuilt their website on the same shared codebase: appointment scheduling, in-app chat, and video visits, all shipping to iOS, Android, and web from one set of components.
“Infinite Red helped us architect a shared codebase across web and mobile, streamlining development and accelerating our time to market. The investment continues to pay dividends with every release.”
— Kristin Andrus, Director of Application Development, ZoomCare
We've built other patient-facing apps and wired them into the health systems behind them, for clients we can't name.
React Native is proven in healthcare: Doctolib runs its patient and clinician apps on it, Hinge Health has run its digital clinic on it since 2018, and Oscar built its member app with it. We've been in that ecosystem the whole time: we host Chain React, the React Native conference, where a Hinge Health engineer walked through building inside their app.
See if we're a fit. Chat with our team over Zoom →We build in React Native, so one codebase ships to iPhone and Android, and a fix reaches both at once.
You're going to put us through a vendor security review — good, you should. We're a team of about 30, fully remote across the U.S., an official Expo partner, and we've been shipping React Native since before it was a safe bet. We've worked under signed HIPAA agreements and inside the security processes of publicly traded companies. Senior people in your own time zone: a question gets answered today, not overnight. We build so your team can run it after we're gone.
Have you actually built healthcare apps? Yes — ZoomCare's app is the one we can point to by name. Most of our healthcare work is under NDA: patient-facing apps and the integrations that connect them to the systems behind them.
Is React Native robust enough for healthcare? Yes. Companies like Doctolib and Hinge Health run healthcare products on React Native today. The framework isn't the risk; the implementation is. Encrypted storage, biometric login, and audit logging are standard on our builds.
Will you sign a BAA and handle PHI correctly? Yes. We've built under executed HIPAA business associate agreements. We scope PHI deliberately, encrypt it in transit and at rest, and log who touched what, and we keep the app out of scope wherever the design allows.
Can you pass our vendor security review? Yes. US-based engineers, no offshore handoff, a formal security policy, and SIG security questionnaires already behind us, not ahead. The people in the review are the people on your codebase.
Can you rebuild or take over our existing native app? Yes. We rewrite one screen at a time, on your release schedule, while you keep shipping. No big-bang rewrite.
Can you integrate with Epic, Cerner, or FHIR? Yes. We work with FHIR and HL7, Epic on FHIR, and the systems you already run. We connect to your record; we don't make you rebuild it. What we won't do is promise an integration your EHR doesn't actually expose.
Chat with our team over Zoom — one of our owners will meet you, look at where your product is and what's slowing it down, and tell you straight whether we're the right team to ship it. Fully remote across the U.S.
Infinite Red is a US-based React Native and Expo agency that builds healthcare software: patient-facing apps and the digital front door, EHR and FHIR integration, remote patient monitoring, and native-to-React-Native rewrites. Founded in 2015. We built the mobile app for ZoomCare and have delivered patient-facing healthcare apps and health-system integrations under HIPAA agreements. Makers of Ignite and Reactotron, and hosts of the Chain React conference.




There's no perfect time to get started. Whether you have a formal proposal or a few napkin sketches, we're always happy to chat about your project at any stage of the process.
One of our owners will meet with you on Zoom to answer all your questions. Will it be Todd? Jamon? Gant? Email us and roll the dice!