# uCTRL case study | Bruno Pintos

2026–Present · Senior Mobile Engineer · Mobile

> AI-native personal health app. I'm the only React Native engineer and I build the whole iOS app.

## Context

uCTRL (short for "you control") is an AI-native personal health platform that unifies a user's Apple HealthKit data, EHR records and manual notes into a single conversational experience. Users get daily AI insights, ask health questions in natural language, track medication adherence, and share a filtered, time-bounded lifeline with doctors or family.

## My role

I joined in February 2026, while the team was building the MVP. I'm the only React Native engineer and I own the iOS app. I work with two senior backend engineers, a backend intern, a product intern, the PM (who is also the product owner), a product consultant and a senior designer.

## What I built

- HealthKit integration
- The AI insights home
- The Health Assistant chat, with actionable responses
- The Lifeline timeline
- Granular data-sharing flows
- Medication tracking with OCR
- Biometric gating and onboarding
- Voice input with Apple's native speech-to-text

## Key decisions

- **Bare React Native instead of Expo.** The app depends on deep, native HealthKit integration, so I chose full access to the native iOS project over Expo's managed workflow.

## What was hard

- The HealthKit integration.
- Voice-to-text on top of Apple's native speech recognition.
- The Lifeline's linear view, where you zoom in and out of your health history. It was a challenge in both design and front-end.
- Animations throughout the app.
- Keeping onboarding quick and simple for a product that asks for sensitive health data.

## Status

The MVP is in active development and hasn't launched yet.

## Stack

React Native, HealthKit, OCR

Visit uCTRL: https://uctrl.ai/

HTML: https://www.brunopintos.com/work/uctrl/