No card for free use
Create a free account and keep your diary without subscribing.
Diary plans
Start free. Add reflection tools only when you need them.
Your diary remains useful without a card. Premium is an optional monthly plan for AI-assisted review and document preparation.
Diary Premium
¥980 / monthTax included. Billed monthly through Stripe.
Free Diary and Premium
Keep the plan that fits the way you use your records.
What you can do
Free
Premium
Write, search, and review your own Diary
✓
✓
Download your Diary backup (JSON)
✓
✓
Image attachments
3/day
up to 10 per entry · up to 20 per day
Audio notes
—
✓
AI reflection room
—
20/hour
AI pattern review
—
1/day
AI Word/PDF preparation
—
3/day · 30 saved
Example of AI-assisted reflection
A structure for thinking, not a verdict.
Premium can help group recorded changes and open questions from your Diary. It cannot know another person’s intent, verify a claim, or provide legal or medical advice.
Observed changeArrival times were later on 2 of 5 days.Open questionWhat other context was present on those days?Synthetic example. Not proof or a diagnosis.
Before you choose
Cancel when you decide
Cancellation is completed through Stripe’s billing portal. Access continues through the current paid period; your diary is not automatically deleted.
You stay in control
You can download your own Diary backup (JSON) from account settings. It includes records, attachments, and preferences stored in your account; device-only chat history and browser caches are not included. We do not share it automatically with investigators.
Questions about the paid plan? [email protected]. Read the commercial disclosure before purchasing.
Want to see the product first?
Explore the fictional sample, then start with a blank real entry.