Lumi

Introduction to Lumi

Lumi is a privacy-first wellness companion designed to help individuals track their mood, journal thoughts, and engage in supportive conversations without sending data to the cloud. All core capabilities, including AI chat and health insights, run on-device using Apple Intelligence on supported iPhones.

The product is intended for users who prioritize data privacy and want structured tools to understand how daily habits and health metrics relate to emotional well-being. Lumi integrates with HealthKit to correlate factors such as sleep, steps, and activity with mood trends, while providing secure journaling with text, voice, and photo entries.

Key Takeaways

• On-device AI with no cloud processing
• No account required and zero tracking
• Private AI chat with sentiment awareness
• Mood tracking with journaling, voice notes, and photo attachments
• Health insights using Apple HealthKit (sleep, steps, activity)
• Digital sanctuary with guided breathing and a peaceful garden experience
• Data export in CSV, PDF, and HTML formats
• Full AI features on iPhone 15 Pro or newer with iOS 18.1+; basic mode available on older iPhones
• Language support: English (US, UK, AU, CA, NZ, ZA, IN, SG)

How Lumi Works

Lumi processes conversations and wellness data directly on the device. When you chat with Lumi, responses are generated locally using Apple Intelligence on supported hardware. Mood check-ins can include text entries, voice recordings with automatic transcription, and photo attachments, all stored on-device.

With user permission, Lumi connects to Apple HealthKit to analyze correlations between health metrics and mood. Insights help users observe patterns over time, such as how sleep or activity may relate to daily check-in scores. Data can be exported at any time in CSV, PDF, or HTML for personal records or sharing.

The experience varies by device capability. On iPhone 15 Pro or newer with iOS 18.1 or later, AI chat and AI-powered health insights run on-device. Older iPhones operate in a basic mode with template chat responses and standard health data display.

Core Benefits and Applications

Lumi supports consistent mood tracking and reflection while preserving privacy. Users can perform quick daily check-ins, record voice notes that are automatically transcribed, and attach photos to capture context. Over time, HealthKit data helps identify patterns between sleep or activity levels and mood.

Practical applications include private journaling, structured self-reflection, and preparing summaries for personal review or professional conversations by exporting data. The digital sanctuary and guided breathing can assist with short, focused breaks during the day. By operating without accounts or cloud services, Lumi is suitable for privacy-sensitive users and for environments with limited connectivity.