BookSynapse
Read. Record. Reconnect.
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Notes become neurons; books connect into synapses.
BookSynapse — a second brain that grows as you read and write.
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■ Every day, your books speak again
· Today's Synapse — one new connection, one card a day
· Echo from the Past — a note from months ago resurfaces today
· Weekly Synapses — your week's reading arrives like a letter on Sunday
· Recent Pulses — this week's reading at a glance
■ Writing gets lighter
· Snap a page and its sentences become text
· Jump straight into writing from the Lock Screen or Control Center widget
· Offline? Notes are saved and sync when you're back
■ Scattered notes, connected
· Auto-linked by shared authors, keywords, and tags
· Link any two notes by hand when they belong together
· No manual organizing — the network grows as you write
■ A second brain, built by reading
· Neural View — every note in one living graph
· Thought walk — wander from note to note along the links
· Zoom and drag through your own mind
■ Sentences worth keeping become cards
· Turn quotes and synapses into paper-textured cards
· Save them, or pass them along
■ Reading becomes a universe
· Finished months are planets; each book, a satellite
· From rating spreads to yearly stats — numbers turned into scenery
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No ads. No tracking. Every feature free.
For everyone who reads quietly and writes deeply.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Dark mode icon — When your Home Screen uses Dark or Tinted mode, the app icon now follows. (iOS 18 and later)
• Today's Synapse and Echo from the Past now refresh at midnight in your local time zone.
The developer, Jihye Shin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- User Content
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jihye Shin
- Size
- 5.8 MB
- Category
- Books
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Korean
- Age Rating
4+
- 4+
- Copyright
- © 2026 Jihye Shin