A calm place to read

Read,
unhurried.

your calm sky ✦

Nimbus is a calm ebook reader that gets out of the way. Beautiful by default, private by design — your books never leave your device.

Open the web reader → Download for Mac

What's inside

Made for slow reading ↓
01 Beautiful by defaultNew York serif, Paper · Sepia · Night, adjustable type, and a real two-page spread that never sprawls.
02 Yours aloneEverything lives on your device. No account required to read; your library never leaves it.
03 Made for deep attentionA calm Focus mode, footnote-aware read-aloud, highlights, notes, bookmarks and your reading stats.
04 Nimbus PlusWhen you want the cloud: encrypted sync, hosted AI, and premium voices — never required, always optional.

Choose your Nimbus

Everything on your device is free, forever. You only pay for what needs our cloud.

Nimbus

$0 free forever
  • The whole reader — themes, typography, two-page spread
  • Focus mode, read-aloud, search & contents
  • Highlights, notes & Markdown export
  • Everything stays on your device
Open the reader
Most loved

Nimbus Plus

$6 /mo · $54/yr
  • Everything in Nimbus, plus:
  • Encrypted sync & backup across devices
  • Hosted AI — ask, explain, translate
  • Premium reading voices
Start with Plus

Nimbus Lifetime

$149 one-time
  • Everything in Nimbus, plus:
  • Sync via your own iCloud / Dropbox
  • Bring-your-own-key AI, at your cost
  • No subscription, ever
Get Lifetime
NIMBUS — A CALM PLACE TO READ Download · Reader · A Ninth Heaven product