An AI journal that never leaves your phone .
MindVault gives you an AI reflection partner that is provably private — every word is processed by Apple's on-device Foundation Models and never leaves your iPhone — paired with clinical mood tracking and a one-time purchase option that escapes subscription fatigue. No competitor combines on-device AI, clinical tracking, and lifetime pricing.
Sound familiar?
Your journal is an ad network
83% of mental-health apps share data with third parties. Your most private thoughts become someone else's data.
AI that phones home
Cloud journals transmit every entry to a server for processing. You can't be fully honest with an app that's listening.
Subscription fatigue
You journaled fine, then they raised the price. Wellness apps charge $12/mo forever for features you already paid to build a habit on.
The blank page
Most journaling fails because staring at an empty screen at 6:45am is the last thing an anxious mind wants to do.
Everything you need
On-device AI reflection
Apple's Foundation Models read your recent entries privately on your iPhone and surface one thoughtful question — so you never face a blank page.
Provably private
Turn on airplane mode and everything still works. There is no server. Your thoughts are processed entirely on your device.
Voice journaling
Speak instead of type. On-device transcription turns a 90-second voice note into an entry — no audio ever uploaded.
Clinical mood tracking
Log pleasantness and energy to Apple Health, and track validated PHQ-9 and GAD-7 scores on a trend chart over time.
Weekly insight digest
Every week, an on-device summary of your themes and mood patterns — the moment your journaling starts paying you back.
Buy once, own forever
Escape subscription fatigue. A one-time lifetime unlock means you never get a price hike on your own private thoughts.
Built for power users
The anxious professional
Tap the morning prompt the AI surfaced, speak for 90 seconds, lock your phone — defuse the spiral before it grows.
The privacy absolutist
Test it in airplane mode on day one. See full AI functionality offline. There is simply no server to leak.
The burned subscriber
Cancelled four wellness subscriptions? Choose the lifetime tier once and never think about it again.
Frequently asked questions
Does the AI really run on my phone?
Yes. MindVault uses Apple's on-device Foundation Models for prompts and insights. Turn on airplane mode and the AI still works — that's the proof. There is no MindVault server.
Which iPhone do I need?
MindVault runs on iOS 18 and later. The full on-device AI uses Apple Intelligence; on older devices it gracefully falls back to a curated prompt library so journaling always works.
Is it really a one-time purchase?
Yes. The $129 lifetime tier unlocks every Pro feature forever with a single payment. Prefer to subscribe? Monthly ($12.99) and annual ($49.99) options include a 14-day free trial.
Can I get my entries out?
Always. Pro exports your journal to Markdown or PDF through the share sheet. Your writing belongs to you, not to us.
What about my mental-health data?
Mood logs write to Apple Health on your device. PHQ-9 and GAD-7 scores stay local. The App Privacy label is 'Data Not Collected' because there is nowhere for it to go.
Understand your own mind — privately.
Join the waitlist to be first on MindVault AI when it launches on the App Store.