DeepJournal

DeepJournal is a private desktop AI journal for macOS and Windows. It organizes entries into people, projects and themes, answers questions grounded in your own writing, and protects content with local encryption, encrypted sync and confidential AI processing.

DeepJournal is a desktop journaling app for macOS and Windows that adds an AI layer on top of ordinary daily writing. Entries are analyzed to pick out events, people, projects and recurring themes, which are then linked together over time. The result is a journal that can be searched, browsed as timelines and chapters, and questioned in plain language rather than scrolled through page by page. The main interaction is a question box over the whole journal. A user can ask why they have felt drained after work, how a relationship has developed, or what keeps coming up around a decision. The app searches the entries and replies with an answer that quotes dated passages from what was actually written, and it frames its conclusions as patterns in the entries rather than diagnoses. Several open-weight models can be selected for these answers, including Gemma, Kimi, GLM, DeepSeek, Llama, MiniMax and Mistral, and personas such as a supportive guide or a career mentor change the tone of the replies. Thread views follow a topic like photography across the year, while chapters group months and meaningful periods into a readable story. Privacy is the central selling point. The journal is encrypted on the device and protected by a password, backups and sync are end-to-end encrypted, and AI requests run inside a secure hardware environment so that neither DeepJournal, model providers nor cloud infrastructure can read the content. That design suits people who want to write about health, relationships or work without handing the text to a general-purpose chatbot. Compared with note apps that bolt on a summarizer, DeepJournal is built around long-term memory and retrieval of personal history. Compared with browser-based journaling services, it is a desktop-first product with no mobile or web client listed on the homepage. A free plan covers encrypted journaling, sync, search, statistics and a preview of the confidential AI, while a Plus plan unlocks deeper insights.