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

Understand Your Symptoms

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

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

What was in place before we started.

Ada turns a worrying symptom into a clear, plain-language picture. A guided question flow — backed by a CE-marked Class IIa medical device in the EU — walks each person through what they are feeling, then suggests the most likely explanations and a sensible next step. Free to use, with tens of millions of assessments completed worldwide.

Ada turns a worrying symptom into a clear, plain-language picture. A guided question flow — backed by a CE-marked Class IIa medical device in the EU — walks each person through what they are feeling, then suggests the most likely explanations and a sensible next step. Free to use, with tens of millions of assessments completed worldwide.

Engagement
2 months reconstructed
Team
3 people
Budget
$15k – $25k reconstructed
Year
2026
Used by
Worried patients · Caregivers · Self-trackers · Triage teams
Core
Guided symptom assessment & guidance
Coverage
Ask, assess, explain, advise, follow up
Output
Likely causes & a clear next step
Implementation architecturereconstructed
React NativeExpo SDK 54Expo RouterTypeScriptNativeWindTanStack QueryReact Hook Form + ZodSupabase (Postgres + RLS)Supabase AuthSupabase Edge Functions (Deno)GitHub ActionsEAS Build + OTA Updates
Challenges

Each constraint, and what we did about it.

Constraint

Search results jump to worst cases

What we did

Step-by-step symptom questions

Constraint

No structure to the questions

What we did

Built on a medical knowledge base

Constraint

Hard to judge what is urgent

What we did

Likely causes in plain language

Constraint

Anxiety with no clear next step

What we did

A clear, sensible next step

Constraint

Notes for the doctor get lost

What we did

A shareable assessment summary

Constraint

Same questions asked again later

What we did

History kept for follow-up

The value isn’t a verdict — it’s orientation: enough clarity to act calmly and know when to seek care.

Results

Outcome, with the source of every figure.

2-month engagement
3 min
Median time to a clear answer.
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
+57%
Users who knew their next step.
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 Ada Health section.
+44%
Assessments shared with a clinician.
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
10M+
Assessments completed worldwide
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
Guided
Question flow
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
Assessment completion rate
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.
Self-care confidence
unsourcedPresent in the deck config; no corroborating figure in the vertical research docs.

By turning a scary symptom into a guided, plain-language read with a clear next step, Ada helped people act calmly — and arrive at care already understood.

Roadmap

How it was sequenced.

2 monthsreconstructed delivery
Weeks 1–2

Discovery & shaping

Discovery with patients & clinicians; mapping the “new symptom” moment.

  • Symptom Q&A
Weeks 3–7

Core build

Guided question flow, assessment report, plain-language guidance, check-in home.

  • Assessment
  • Guidance
Weeks 8–9

Launch & iterate

History & follow-up, shareable summaries, content updates, triage hand-off.

  • Continuity

More work like this.

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