What is AI Diary?
AI Diary reimagines the traditional diary experience in a conversational format: users can input their daily entries, and the AI responds in real time, asking questions and encouraging deeper reflection based on the day’s content. The system automatically analyzes the text to extract the dominant emotions of each day and generates an emotional trend chart. It also provides writing-quality assessments—covering readability, vocabulary, grammar, and structure—and supports voice‑based journaling and voice‑driven feedback. Users can generate a one‑click summary or even a poem from their daily entry. Additionally, it features built-in AI‑enhanced search, enabling semantic‑level rapid retrieval of past entries. All data is end-to-end encrypted, ensuring that only the user can access their diary. This tool is designed for individual users who wish to enhance self‑awareness, writing skills, and emotional regulation.
Key features
AI Real-Time Conversational Diary: Based on the user’s input for the day, the AI proactively asks questions, responds with empathy, and continues the conversation flow, simulating a human interaction experience, such as “Oh no, that sounds like a lot of pressure. Did you do anything to cope with the stress today?”
Emotion Analysis and Visualization: AI automatically processes diary entries, identifies and labels the dominant emotion of each day, and generates time-series emotion trend charts to help users track long-term changes in their psychological state.
Use cases and audience
Daily journal users who hope to leverage AI to cultivate writing habits, manage their emotions, and engage in self-reflection.
- AI-Assisted Journaling and Emotional Reflection: Generate writing prompts with AI, analyze daily emotional trends, and gain insights for personal growth.
- Voice Diary Recording and Interaction: Supports dictating diary entries and receiving AI-generated voice feedback, enhancing the personalized experience.
- Intelligent processing of diary entries: automatically generates summaries, poems, and writing-style analyses, and supports AI-enhanced full-text search.
Diary entries in text or voice format, user emotional states, and preference settings (such as gender and age)
AI-generated dialogue responses, sentiment analysis charts, writing quality assessments, diary summaries, AI poetry, voice responses, and AI-enhanced search results
Frequently asked questions
How many messages can the free version send per day at most?
The free version allows you to send up to 5 messages per day.
Can the free version view sentiment analysis or AI-generated content from past dates?
No. The free version cannot perform sentiment analysis, view sentiment charts, generate summaries/poems, conduct writing analysis, or search historical conversations.
How to use
- 01
Create a free account
- 02
Start journaling after logging in.
- 03
Enter your daily experience or mood and start a conversation with the AI.
- 04
Use AI features such as generating summaries, poems, or sentiment analysis (subscription required)
Pricing and availability
AI Diary is available for free, but with limited features: you’re restricted to 5 messages per day; the AI only retains today’s conversations and cannot access messages from previous days; it does not support sentiment analysis or sentiment charts; AI-powered functions such as summary generation, poetry creation, and writing analysis are unavailable; and you cannot search through past conversations. To unlock the full suite of features, you’ll need to subscribe to a monthly or annual plan (the official website mentions “discounts almost always available,” but it does not disclose specific pricing, currencies, commercial terms, or usage caps).
- Pricing source
- https://aidiary.io/
- Pricing last updated
- 2026-10-26
Prices and limits may change. Check the official website for current terms.
Official website & sources
Updated on 2026-10-26

