Your Private AI Diary
A personal journal powered by on-device AI. Speak your thoughts, reflect with AI, and keep everything completely private on your device.
iOS 17+ • iPhone 13 or later • One-time purchase
Your Thoughts, Your Privacy
A diary that listens, understands, and never shares.
Voice Journaling
Speak your thoughts naturally. AI transcribes and refines your words into polished journal entries.
AI Companion
Chat with an AI that knows your journal. Get insights, reflection prompts, and compassionate responses.
Daily Prompts
Thoughtful prompts to inspire reflection. Never stare at a blank page again.
Mood Tracking
Track your emotional journey over time. See patterns and celebrate growth.
Completely Private
Everything stays on your device. Your innermost thoughts never leave your iPhone.
Encrypted Storage
Your journal is encrypted with your device passcode. Only you can access it.
Why On-Device AI Matters
Your diary should be the most private thing you own.
No Cloud, No Compromise
Other AI apps send your data to remote servers. Ludy processes everything locally using Gemma 3, a state-of-the-art LLM that fits on your iPhone.
Your Words Stay Yours
Your journal entries are never used to train AI models. They never leave your device. Period.
Works Anywhere
No internet? No problem. Journal on a plane, in the mountains, or wherever life takes you.
Requirements
Ludy requires modern hardware for on-device AI processing.
Start Your Private Journal
Your thoughts deserve privacy. Try Ludy and experience AI journaling that respects your data.
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