Reflective AI Diary
Turn your daily reflections into a library of personal insights. Eristotle makes journaling easy and reflecting effortless.
Reflective Journaling everywhere you go
Eristotle combines cutting-edge AI with digital journaling to help you understand and nurture your thoughts.
Express Yourself Your Way
Write, record voice memos, chat with AI, or have real voice conversations. Eristotle adapts to how you want to reflect.
Discover Your Patterns
Advanced AI analyzes your entries to reveal emotional patterns, triggers, and growth opportunities you'd never notice on your own.
Your Privacy, Your Choice
Choose on-device Apple Intelligence for 100% privacy, or use cloud AI for enhanced conversations. You control your data, always.
AI Voice Conversations
Experience real-time voice chat with your AI companion. Speak naturally and get thoughtful, empathetic responses.
Smart Reflections
AI generates weekly insights about your emotional patterns without you having to ask. Discover themes and growth moments.
Beautiful Analytics
Visualize your emotional journey with stunning charts, heatmaps, and trend analysis. Track your progress over time.
Your Growth, Without the Noise
General AI tools are great for facts, but they're loud. Your mind isn't a search query, and your legacy shouldn't be mixed with snack trivia.
General AI (ChatGPT/Gemini/Claude)
The Clutter Problem
- Context Pollution: Data from irrelevant chats gets mixed in with your personal thoughts.
- Memory Decay: These AIs eventually forget your early chat history.
- Data Slavery: Your data is productized to train the next model without explict opt-out.
- Sifting Through Noise: Searching though chats requires specific keywords and fetching data from the Cloud.
Eristotle
The Clarity Solution
- Pure Intent: A 100% dedicated space for journaling. All AI Insights and Trends are derived solely from your journal entries.
- Total Recall: Your entries create a persistent knowledge base that ensures your AI never forgets a detail.
- Data Sovereignty: Your thoughts stay in your iCloud. Create an encrypted, offline backup any time.
- Semantic Mapping: Smart Search detects correlation and relevant entries automatically.
A beautiful space for reflection
Every interaction with Eristotle is designed to feel calming and supportive. From AI-powered prompts that help you start writing, to insights that help you understand yourself, to Smart Search that helps you reflect on past entries.
Speak naturally with automatic transcription
50+ emotions detected with intensity tracking
The Architecture of Smart Search indexes your entries by meaning, not just keywords.
Multiple AI provider options
Eristotle offers flexibility no other app can match. Choose the experience that's right for you.
Apple Intelligence
- 100% on-device processing
- Complete privacy—nothing leaves your iPhone
- Works offline
- Free with app
Cloud AI
- Advanced OpenAI models
- Enhanced conversation quality
- Better context understanding
- Premium subscription
BYOK (Bring Your Own Key)
- Use your own OpenAI, Anthropic, or Gemini keys
- Choose specific AI models
- Unlimited voice conversations
- Full control over costs
Choose exactly which AI features you want—or none at all. Eristotle works beautifully as a traditional journal without any AI assistance. You can individually disable Insights, Smart Reflections, Emotion Tagging, and Sentiment Analysis based on your preferences.
AI-generated insights about your patterns
Eristotle doesn't just store your thoughts—it helps you understand them. Get weekly AI-generated insights that surface meaningful patterns from your entries.
Dominant emotions and feelings
Mood trajectory and changes
Achievements and breakthroughs
Relationship patterns
Visualize your growth
Beautiful charts and visualizations help you see the bigger picture. Track your emotional patterns over days, weeks, and months.
Emotion Distribution
See which emotions appear most frequently
Mood Trends
Track your emotional trajectory over time
Activity Heatmap
Visualize journaling patterns and consistency
Start free, upgrade when ready
Choose the plan that fits your journey. All plans include core journaling features.
Free Forever
Perfect for getting started
- Unlimited journaling
- On-device AI with Apple Intelligence
- Text Chat with AI companion
- Smart Search and Smart Reflections
- Trends and Analytics
- Standard & Smart Exports
- iCloud Sync
- Encrypted Offline Backups
Premium
Enhanced AI with cloud models
- Everything in Free
- Advanced Cloud AI for Text Chat
- Voice Journaling with transcription
- High-quality audio responses
- Advanced RAG context retrieval
- Themed Exports
Premium Annual
Save 17% — just $4.17/month
- Everything in Premium
- 2 months free
- Best value for Premium
BYOK
Full control with your own API keys
- Everything in Premium
- Bring Your Own API Keys
- OpenAI, Anthropic, Gemini, ElevenLabs
- Custom AI Voice Chat (unlimited)
- Choose your AI models
- API usage tracking & cost insights
BYOK Annual
Save 17% — just $2.50/month
- Everything in BYOK
- 2 months free
- Best value for power users
The Eristotle Privacy Pledge
We believe your inner thoughts should never be a product. Eristotle is built on the principle of absolute data sovereignty.
iCloud-Native Storage
Your entries are stored exclusively in your private iCloud account. We don't use third-party databases (like Firebase) to store your text or media. Your data stays yours, exactly where you left it.
BYOK Sovereignty
Bring Your Own Key (BYOK) ensures that you own the relationship between your thoughts and the AI. API data is not used for training global models, giving you enterprise-grade privacy.
On-Device AI
Apple Intelligence processes your core features on-device. Your local context stays local, ensuring that your privacy is never compromised for the sake of intelligence.
Zero Middleman Tracking
Because we don't host your data, we cannot "see" into your journal, sell your insights, or track your emotional patterns. Your growth is your private business.
A journal that reflects.
Start your journey today
Get more out of your journaling with Eristotle.
Free to start. Upgrade anytime. Cancel whenever.
Available for iPhone and iPad iOS 26+