Chronos Care
Empowering Digital Diabetes Care - Chronos Care
Chronos Care formed a strategic alliance with KDL to pioneer a pivotal application, serving thousands of diabetic users.
Mobile DevelopmentUsability Testing
Mobile, built like infrastructure.
Patient-facing apps, clinician tools, and connected-device companions. iOS and Android software engineered to survive App Store reviews, regulatory audits, and a decade of devices.
What we build
Patient-facing apps
Symptom journals, telehealth clients, medication adherence, post-op recovery. Built for the lowest-friction install and the highest retention.
Clinician tools
Mobile-first EHR companions, bedside note capture, on-call workflows. Designed around the four-second interaction budget of clinical work.
Trial & study apps
GCP-aligned data capture, e-consent, ePROs, and remote-monitoring clients for sponsors and CROs running decentralized trials.
Device companions
Bluetooth medical-device pairing, BLE ingestion, real-time sync. Companion apps for RPM, wearables, and in-home diagnostics.
How we work
Discovery
Architecture review of any existing app, regulatory exposure assessment, and a written engagement plan. No commitment.
Architecture
Stack choice (native vs cross-platform), data model, offline behavior, sync strategy, and the compliance posture each implies.
Build
Two-week sprints. Working app from sprint one. CI/CD to TestFlight and Internal App Sharing from day one. You see progress every two weeks, not at the end.
Harden & launch
Store-submission prep, accessibility audit (WCAG 2.2 AA, plus VoiceOver/TalkBack), penetration test if the data classification requires it, and the post-launch operations runbook.
Technologies we use
Native
SwiftSwiftUIKotlinJetpack Compose
Cross-platform
React NativeExpoTypeScript
Data & sync
GraphQLRESTWebSocketsRealmSQLite
Quality
XCTestEspressoDetoxMaestroFastlane
How we'll work together
Two-week sprints, demoable software every sprint, written status notes. You own the backlog and the direction. Compliance scoping happens up front so it never blocks a release. Typical first engagements run six to twelve weeks; longer relationships continue as iteration cycles. No retainers, no team-of-one risk.
Frequently asked
Native or cross-platform: which do you recommend?
Both, depending on the work. Native (Swift, Kotlin) when device APIs or performance demand it: Bluetooth medical devices, on-device ML, accessibility quirks. React Native when a single codebase across iOS and Android is the priority and the device surface is mainstream. We start with the constraint, not the framework.
How do you handle HIPAA, GDPR, and MDR compliance on mobile?
Compliance scoping is part of discovery, not bolted on at the end. We've shipped apps under HIPAA (US), GDPR + MDR (EU), and FDA Class II device-companion paths. Data classification drives the architecture: at-rest encryption, key management, audit trails, consent flows, and store-submission language. We tell you the trade-offs in writing.
Who owns the code?
You do. All source, App Store and Play Store accounts, signing certificates, and analytics dashboards are yours from day one. We work in your repositories or hand over ours at the end of the engagement. Your choice.
How long does a mobile project take?
An MVP with one platform and a small feature set typically ships in 8-14 weeks. A dual-platform app with device integration and regulatory paperwork is 16-28 weeks. We give a range in writing after discovery, and update it honestly when scope changes.
Can you take over an existing app?
Often, yes. We start with a written architecture review: what's salvageable, what's tech-debt risk, and what needs to be rewritten before the next feature can land. Decisions stay with you. The assessment is free.
What about updates and App Store maintenance after launch?
Two paths: we stay on as your mobile team and ship every sprint, or we hand over to your in-house team with documentation, CI/CD, and 4-6 weeks of pair-programming overlap. No surprise retainers either way.
Ready to build a mobile app for healthcare?
We'll start with a free architecture review. Written, no commitment.