Current Stage

Launch iOS First, Then Open Subscriptions

Companion Reader is preparing for its overseas App Store launch.
This site provides product, policy and support information.
iOS memberships will use Apple IAP inside the app.

Free Version

Core Reading First

For the core flow: import, read, highlight, collect quotes and take notes.

  • EPUB import and reading
  • Highlights, quotes and notes
  • Limited sync and AI features
Learn More
Website Notice

No External iOS Purchase

This site only provides product information, policies and support links. It does not process external iOS membership payments.

  • Privacy policy and terms
  • Support and account deletion guide
  • App Store review support links
Contact Support
App · Subscription

Mobile Reading, Cloud Sync

The iOS app will launch first in selected overseas regions.
Subscriptions will be handled through Apple IAP.
For the initial iOS release

Free User

Basic Reading On the Go

Read, underline and take notes anytime, anywhere.

  • Basic reading and note features
  • AI requires your own API Key
  • Limited usage quota
Contact Support
System AI · Planned

A Simpler Way to Use AI

Platform-connected AI may be offered later. Scope, limits and regions will be explained in the app.

  • Platform handles AI integration
  • Fair usage rules apply
  • Price and launch date TBD
Coming Soon
Desktop · Planned

Desktop Purchase Is Not Open Yet

Current work prioritizes the iOS launch and subscription flow.
Windows and macOS will be reviewed after mobile stabilizes.
For future desktop versions

Coming Soon

Desktop Activation Code

The desktop version will continue around the three-window deep reading workspace.

  • Better for long-form organization
  • Keeps a local-first direction
  • Pricing and launch date TBD
Coming Soon

Preparing for iOS Launch

This site provides product information, privacy policy, terms and support links; subscriptions happen inside the app.