Delivered engagementHealth & Wellness · $15k – $25k
Guava

All Your Health Records, Together

Delivered engagement. Coralsoft designed and built this product end to end; figures below retain their evidence level.

iOSAndroidCloudReact NativeExpo SDK 54Expo Router
Guava — product interface
Guava — product interface
The situation

What was in place before we started.

Guava aggregates records from 50,000+ US providers — via MyChart, Cerner and others — into one personal health record. People search any result in seconds, watch labs trend over years, and let AI digitize and summarize notes. It is HIPAA-compliant, with no ads and no data selling, and offers a free tier.

Guava aggregates records from 50,000+ US providers — via MyChart, Cerner and others — into one personal health record. People search any result in seconds, watch labs trend over years, and let AI digitize and summarize notes. It is HIPAA-compliant, with no ads and no data selling, and offers a free tier.

Engagement
4 months reconstructed
Team
3 people
Budget
$15k – $25k reconstructed
Year
2026
Used by
Proactive patients · Chronic-condition trackers · Caregivers · Quantified self
Core
Personal health record aggregation
Coverage
Import, organize, search, trend, correlate
Output
One searchable health history
Implementation architecturereconstructed
React NativeExpo SDK 54Expo RouterTypeScriptNativeWindTanStack QueryReact Hook Form + ZodVercel AI SDKpgvectorTypesenseSupabase (Postgres + RLS)Supabase Auth
Challenges

Each constraint, and what we did about it.

Constraint

Records split across portals

What we did

Records & labs imported together

Constraint

Labs trapped as one-off PDFs

What we did

Search any result in seconds

Constraint

No way to search past results

What we did

Lab values trended over time

Constraint

Trends invisible across years

What we did

See ranges & what’s out of bounds

Constraint

Vitals stranded on devices

What we did

Vitals & devices in one view

Constraint

Every new doctor starts over

What we did

A full history to share with care

The shift isn’t storage — it’s ownership: a complete, searchable record that travels with the person, not the clinic.

Results

Outcome, with the source of every figure.

4-month engagement
+64%
Users with a complete record imported.
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
+51%
Lab results searched within a week.
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
4.8★
Across App Store reviews.
third-partyCorroborated in the healthcare research doc's Guava Health section.
+46%
Correlations run on personal data.
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
All-in-1
Personal health record
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
Search
Any result fast
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
Records imported per user
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
Lab trends reviewed
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.

By aggregating scattered records into one searchable history with trends and correlations, Guava handed people their own data — and made every appointment start with the full story.

Roadmap

How it was sequenced.

4 monthsreconstructed delivery
Month 1

Discovery & shaping

Discovery with proactive patients; mapping the “where are my records” moment.

  • Records
Months 2–3

Core build

Record import, unified search, lab trending, reference ranges & flags.

  • Search & Trend
Month 4

Launch & iterate

Correlations, cycle & symptom tracking, device sync, shareable records.

  • Correlations
  • Tracking

More work like this.

Every case study is a Coralsoft delivery story, with the evidence behind each figure kept visible.