Universal
Labs.AI engineers · London
WorkCase study · 04 of 08Health app

A daily skin diary.
Understand your skin over time.

Riia is a native iOS skin diary that brings voice check-ins, photos and product tracking together. Users can record symptoms and daily routines, review changes over time and explore patterns that may help them understand potential triggers.

Client
RiiaStudio venture
Stages we ran
01Research
02Product
03UX & UI
04AI engineering
05Ship & run
Stack
React Native · Expo · ElevenLabs + LiveKit · Supabase · Sentry
Year
2026
Live
riia.app ↗Build 26 with App Store review
Ask Riia questions about your skin diary
Build a doctor's note from your diary
The problem

Making daily skin tracking easier to maintain.

Understanding changes in skin requires a consistent record of symptoms, products and daily routines. Riia makes that information easier to capture and review through conversational check-ins and a dated visual diary.

ConstraintCreate a convenient voice check-in and a clear record of changes over time, without presenting the app as a diagnostic tool.
What we built

Daily check-ins, a visual diary and personal insights.

01 · 03

The voice check-in

Users describe their day in a real-time voice conversation. Riia asks follow-up questions and saves the information as a dated diary entry.

04 AI engineeringElevenLabs + LiveKitReal-time
Add a quick voice note with Riia
02 · 03

The diary and the shelf

Photos, product records and diary entries create a timeline of the user’s skin and routine. Dated records make changes easier to review together.

03 UX & UIPhoto analysisProduct shelf
Daily diary with routines, skin rating and personal notes
Check a product by scanning its label, name or photo
03 · 03

The insights

Insights bring together trends and photo comparisons around the user’s selected skin concerns. They help users explore patterns in their records without making a diagnosis.

02 Product05 Ship & runCondition-aware
Patterns across logged products, stress and skin ratings
Weekly look back with sleep averages and skin ratings
Built withReact NativeExpoElevenLabsLiveKitSupabaseSentry
Project outcomes

Build 26, submitted to App Store review.

Native iOSReact Native and Expo, built and submitted through TestFlight.Submitted
Voice both waysReal-time speech in and out. The check-in is a conversation, not a form.In the build
Condition-awareInsights filter to the user's own focus, not a single acne model for everyone.Shipped