NeuroDevApp vs Cairn Journal

The application allows you to view and analyze the signal received from BrainBit and Callibri devices. The app supports the following types of signals: -electrical brain signals (EEG); -electrical muscle signals (EMG); -electrical signals of the heart (HR). After selecting a device, you can select the type of sensor operation: Signal; Spectrum; Emotion; Envelope*; HR*; MEMS* (accelerometer, gyroscope). *- if your device supports these types of signals. For some type of signal in the program there is a possibility to set digital filters for better signal analysis. It is also possible to customize the amplitude and sweep of the signal.

Your thoughts never touch a server. Voice, mood, and patterns are analyzed entirely on your device with Apple Intelligence — no account, nothing uploaded. Raise your Apple Watch and say whatever's on your mind. That's a journal entry. Cairn transcribes your voice, senses your mood and energy, and quietly builds a picture of your hidden inner feelings over the weeks and months. THIRTY SECONDS, NO BLANK PAGE No typing, no prompts to fill in. Just talk for half a minute and you're done — before the thought slips away. READS THE MOMENT, NOT JUST THE WORDS On-device AI listens to what you said and how you said it, estimating mood and energy for every entry automatically. Over time, weekly insights and pattern alerts (with a subscription) reveal what lifts you, what drains you, and how your weeks really feel. YOUR BODY, IN CONTEXT With your permission, Cairn pairs each entry with heart rate and heart-rate variability from Apple Health — a quiet layer showing how a moment felt in your body, not just your head. PRIVATE BY DESIGN Your thoughts never touch a server. Voice recognition, mood analysis, and pattern detection all run on your device with Apple Intelligence. Nothing is uploaded, sold, or mined — and there's no account to create. MADE FOR THE WRIST Built for Apple Watch first, with an iPhone companion for reviewing, searching, and exploring your entries — plus Home Screen and watch complications to start an entry in a single tap. FREE TO USE Download and journal for free: up to 3 voice entries a week, with on-device mood and energy analysis included. CAIRN CORE & PRO (OPTIONAL SUBSCRIPTION) • Core — unlimited entries, weekly insights, and pattern alerts • Pro — everything in Core, plus managed cloud AI for languages Apple Intelligence doesn't yet cover Subscriptions are auto-renewable, offered monthly or annually. Payment is charged to your Apple Account at purchase and renews automatically until cancelled; manage or cancel anytime in Apple Account settings. Terms of Use (EULA): https://cairnjournal.com/terms