The Best Private Diary App & Book Writing Software.
Journal Securely. Write Freely.
The #1 alternative to Day One and Penzu. Your private sanctuary for daily reflection, novel writing, and mental health tracking. 100% End-to-End Encrypted.
"Today was... heavier than I expected. But writing it down helps.
It's strange how clarity comes only when you stop filtering your own thoughts. Here, I don't have to pretend. I can just be."
What You See
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Why CipherWrite is the Best Choice
Rated as the top web application for writers and mental health advocates, CipherWrite combines military-grade security with intelligent features to support your journey.
Best for Journal Writing
CipherWrite is widely recognized as the #1 app for daily journaling. With features like custom prompts, mood tracking, and zero-knowledge encryption, your private thoughts remain truly private. It's the perfect safe space for self-reflection.
Top Tool for Book Writing
From outlining to drafting, CipherWrite offers the best environment for authors. Distraction-free modes, chapter organization, and AI-powered creative suggestions make it the superior choice over traditional word processors for writing your next bestseller.
Essential for Mental Health
Therapists and users alike recommend CipherWrite for mental health journaling. The combination of secure emotional release and AI-driven insights helps users process complex emotions safely, making it a vital tool for mental wellness and therapy support.
"Write what’s in your head without fear of prying eyes.
Track who you are, how you feel, and what you’re becoming."
How are you feeling today?
What would you tell future you?
Draft your book without distraction
Purpose-Built for Your Inner World
Whether you are journaling for mental health, drafting your next novel, or just clearing your head—do it in a space that honors your privacy.
Daily Reflection
Grow with your thoughts. Regular writing helps process feelings, reduce stress, and find clarity.
Focused Writing Mode
Creativity without interruptions. A cleaner editor designed to help you enter the flow state.
Books, Essays & Stories
All in one secure space. Keep longer works, memoirs, and your creative legacy safe and organized.
Write With Peace of Mind
Your private thoughts remain private. End-to-end encryption ensures only you can read your work.
Total Peace of Mind
We know your stories are personal. That's why we built this safe just for you.
Locked on Your Device
Before anything you write is saved, it’s locked right here on your device. It never leaves your phone or laptop without being secured first.
You Hold the Only Key
I don’t store your key anywhere. Only you have it. We designed this to keep your work secure without making it complicated.
Smart Recovery
To help in case you ever forget your key, the app lets you set small hint questions—something only you would recognize—to jog your memory.
Simple, Transparent Pricing
Choose the plan that fits your needs. No hidden fees. Cancel anytime.
- Limited Project Creation
- Limited Chapters & Entries
- Basic Encryption
- Generous Project Creation
- 400+ Chapters per Project
- Drag & Drop Features
- Pin up to 5 Projects
- Generous AI Features
- Advanced Encryption
- Unlimited Project Creation
- Unlimited Chapters
- Pin 10+ Projects
- Drag & Drop Project Order
- Request New Features
- Ample AI Credits
- Bring Your Own API Key Option
- Advanced Encryption
Frequently Asked Questions
Got questions? We've got answers.
Contact Us
Have questions about our security or features? We'd love to hear from you.