PricingPlans
When you're ready to grow your star chart into an asset, upgrade anytime.
Mini-reads, the quiz, and the star chart stay free — always.
Start here
Inquiry Passport
Turn your star chart into an asset.
¥980/mo
- My Knowledge Map (your lights are kept for good)
- Unlimited saves
- Weekly recommended routes
- Monthly knowledge-map report
- Monthly themed specials
Inquiry Guide
Take your questions further, in conversation.
¥1,980/mo
- Everything in Passport
- AI Study Guide (explore follow-up questions in conversation)
- Chapter guides for books
- Go-deeper roadmaps
- Next-book suggestions from your reading log
Frequently asked questionsFAQ
- How much can I do for free?
- Mini-reads, the Curiosity Quiz, and browsing the Knowledge Map and your star chart are free — always. Paid plans add ways to keep your record as an asset and take your inquiry deeper.
- What payment methods can I use?
- Credit and debit cards are accepted. Payments are processed securely through Stripe; your card details are never stored by the Service.
- Can I cancel or change plans anytime?
- Anytime. It takes a few clicks from the subscription settings on your My Star Chart page — no proration, no cancellation fees.