Free forever. IO+ when you want more.
Usage-gated, not time-gated.
Free
$0
- The full library, both reading modes
- Themes, notes, and streaks
- 100 Advanced-model reading-companion responses to start, then five a month
IO+
$2.99/mo
or $24.99/yr
- Unlimited responses from all twelve reading companions
- AI search across the library
- AI For You
- Cross-device sync
Korea: ₩4,400 a month.
Does the AI summarize the book?
No. Every reading companion is instructed not to summarize; each one works on the passage in front of you — context, craft, motive, vocabulary, questions. The Questioner is the only one that turns toward you, and it asks rather than tells.
Is IO reader free?
Yes. The full library, both reading modes, themes, notes and streaks are free. Free includes 100 Advanced-model reading-companion responses to start, then five a month. IO+ is $2.99 a month or $24.99 a year for unlimited reading companions, AI search, AI For You and cross-device sync.
Start with the free library.
