Glacifier is a private AI journal app for Android. Users can write entries by typing or speaking. The app can build a memory of recurring patterns, triggers, and strengths, then provide observations about themes that appear across entries. Users can choose among three response styles: a blunt coach, a calm and analytical voice, or a warm and gentle voice. AI features can be switched off, leaving the app as a private journal. A typical workflow is to record entries over time and allow Glacifier to identify repeated habits or topics. Users can review its observations and choose a response style for the AI. The app is intended for personal reflection, such as noticing recurring avoidance, work habits, or emotional patterns. Drafts save as they are written, and entries can be backed up to Google Drive or exported. Glacifier is available for Android and can be used as a guest. The app is in early access, during which all features, including Premium features, are available for free without a payment card or advertisements.