Students Build Camera-Based Fitness App That Reads Heart Rate Before Assigning Workouts

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A four-person team called Kolkatar Rosogollas developed SoloFit, a React Native fitness app, during the 36-hour HackTropica 2K26 hackathon. The app uses a smartphone's front camera to detect subtle skin-colour changes caused by blood flow, extracting heart rate and breathing rate via the Presage SDK. These vitals are converted into a readiness score, which an LLM then uses to generate a personalised weekly workout plan. The team won the MLH Best Use of Presage SDK award for the project. Presage's own documentation notes its metrics are for general wellness purposes only and have not received FDA clearance for medical use.

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