Cardiogram: Heart & BP Logger

What it does

Cardiogram is a health monitoring application that connects with wearable devices like the Apple Watch to track heart rate and other biometric data. It offers two distinct modules: 'Heart IQ' for analyzing cardiovascular health risks and 'Migraine IQ' for tracking and identifying migraine triggers. The app provides personalized insights, risk assessments, and tools for logging symptoms and lifestyle habits, aiming to help users and their doctors better understand their health patterns.

Where it shines

Cardiogram stands out in its sophisticated approach to a multi-purpose health app. The clear separation between its Heart and Migraine modules (seen at 02:51) is a major strength. This allows users to engage with the features most relevant to them without being overwhelmed. The migraine logging flow (starting at 05:08) is incredibly detailed, allowing users to pinpoint pain locations on a 3D model (05:25) and log a wide array of potential triggers and symptoms. Finally, the app presents its educational content in a modern, engaging "story" format (02:30), making complex health information easy to digest.

UX highlights

Modular Design: The app uses a top-level switcher (02:51) to toggle between the Heart and Migraine modules, each with its own tailored dashboard and onboarding. This keeps the experience focused.
Interactive Logging: Instead of simple forms, logging stress (05:32) or pain location uses interactive sliders and diagrams, which feels more intuitive and less clinical.
'Story' Content: Educational insights are presented in a familiar, full-screen story format (02:30), making them highly engaging and easy to consume.
Clear Permission Framing: The app uses excellent warmup screens before system prompts. For example, it has the user set heart rate alerts (01:33) before asking for notification permissions.
Data-Driven Insights: The "Tag Insights" screen (03:12) promises to analyze user-tagged activities to find correlations, turning raw data into actionable patterns.
Social Leaderboard: A daily steps leaderboard (02:20) adds a light social and competitive element to encourage daily activity.

Monetization & growth

The app's monetization strategy is visible right from the start. After initial setup, the user is directed to a paywall (00:52) for a single module. This screen cleverly includes an upsell link to a bundled plan for both modules (01:03), which is presented as a better value. The app offers a free trial to lower the barrier to entry, and the purchase is handled through the standard App Store flow (02:08). This tiered approach, moving from a single offer to a bundle, is a smart way to maximize average revenue per user.

Who it’s for

Cardiogram is designed for two primary user groups. The first is individuals concerned with or actively managing cardiovascular health conditions, who want to monitor their heart rate data for potential issues like hypertension or sleep apnea. The second group is chronic migraine sufferers looking for a robust tool to log their attacks, identify triggers, and share detailed reports with their doctors. The app serves as a powerful companion for users of wearables who want to go beyond basic activity tracking and gain deeper, more specialized health insights.

Notes & opportunities

The onboarding flow, while thorough, can be slightly confusing. The user is shown a paywall, then a quiz, then another paywall before finally subscribing (00:52 to 02:18). This non-linear path could be streamlined to reduce potential drop-off. In the main dashboard, the initial state shows "No heartrate" (02:22), which could be improved with a clearer message explaining that data is syncing or guiding the user on how to ensure their wearable is connected. Finally, while the dual-module approach is strong, the initial module selection screen could be visually richer to better explain the benefits of each choice.