On Android now · iPhone coming soon
Your books, illustrated and explained — never spoiled.
Illumin is an EPUB reader with AI reading aids. Picture the scene, ask what a passage means, have it read aloud — and the aids only ever know what you've read so far.
Bring the EPUBs you already own — from Files, iCloud Drive, Google Drive or Dropbox.
The aids see the pages you've read and nothing after them.
Open a book with no account. Only the AI aids have a plan.
EPUBs you own, on your device. No store, no lock-in.
Three steps, no account.
Import an EPUB from Files or your cloud drive. It opens on the page you left it.
Three themes, your fonts, highlights, notes and read-aloud. All free.
Select a passage. See the scene, or ask what it means — answered from what you've read, never from what's ahead.
Try it here
Select a sentence and ask.
From Pride and Prejudice, chapter 3. No account, no install.
His brother-in-law, Mr. Hurst, merely looked the gentleman; but his friend Mr. Darcy soon drew the attention of the room by his fine, tall person, handsome features, noble mien.
See the scene.
A picture of the moment you're reading, drawn from this chapter and none after it. Save it, share it — it carries a small mark so people know it came from a book.
Ask the passage.
Who is this again? What just happened? Plain answers that stop where you've stopped.
Have it read to you.
Read-aloud in the voice you choose, with the page following.
Keep what struck you.
Highlights in named colours, notes, a Highlights tab that opens the book on the passage — and a share card.
Anything you do with a book you brought — read it, import it, highlight it, note it, listen to it, change the theme — is free, needs no account, and always will be. The AI reading aids are the only thing with tiers, because they are the only thing with a per-use cost.
Free first. Plus when you want more of every story.
no account needed to read
- Read any EPUB
- Highlights & notes
- Read-aloud
- Three themes
- With a free account: 3 illustrations and 25 explanations, one time ever
≈ $3.33 / month, a third off · or $4.99 / month
or $39.99 a year — ≈ $3.33 / month, a third off
- Everything in Free
- 15 illustrations a month
- Unlimited explanations, under fair use
- Chapter summaries
- Cloud book sync
Free for 14 days, then $39.99 a year. Renews unless cancelled; cancel any time in your phone's subscription settings.
Free for 14 days, then $4.99 a month. Renews unless cancelled; cancel any time in your phone's subscription settings.
Questions readers ask.
Will it spoil the book?
No. Every aid is built from the pages you've already read. It can't see ahead, so it can't tell you what happens.
Does it work with my books?
Any EPUB you own — from Files, iCloud Drive, Google Drive or Dropbox. Books with DRM (most Kindle and Kobo purchases) can't be opened by any third-party reader, including Illumin.
Do I need an account?
Not to read. Reading, importing, highlights and read-aloud work with no account. A free account unlocks 3 illustrations and 25 explanations and syncs your library.
What does Free include, and what's one-time?
The 3 illustrations and 25 explanations are a one-time allowance for the account. Plus renews monthly: 15 illustrations, unlimited explanations under fair use.
Where are my books stored?
On your phone. With an account, your library and position sync through Illumin; the files stay yours to export.
Which AI does it use?
Explanations and summaries use Anthropic's Claude; illustrations use fal.ai. Illustrations are AI-generated and carry a mark that says so. Nothing you read is used to train anything.
Get Illumin on your phone.
Free on Google Play now, coming soon to the App Store. Reading is free forever.
