InLibrus™
InLibrus

How it works

Every reader has argued with a book.
Now the book argues back.

Every avid reader has a scene they'd have played differently: the proposal they'd have refused, the warning they'd have believed, the dare they'd have taken. Make that choice here, and the story doesn't just cut to a new ending. It works out who would actually find out, how fast, and what they'd do about it, then finds its own honest way back toward the story it was always telling. It's the same argument a literature class has over a character's worst decision, except here you get to run it and see.

Tap any feature for a real example.

The Butterfly Effect

Step off the page and the world doesn't rewrite itself instantly. Everyone you haven't spoken to keeps living their own part of the story until your choice actually reaches them.

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Course Correction

It knows where the book is headed and works patiently, sometimes slyly, to bring you back toward it. Never by force. Beat every nudge, and your own path holds.

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Anachronism Autocorrect

Say what you want your character to do in your own words, slang and all. It lands on the page the way that person, in that era, would actually say it: nothing modern ever slips in and breaks the spell.

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No Spoilers

Some books hold their solution until the final page. This does too. You only ever know what a first-time reader would know, and the rest arrives exactly where the novel reveals it.

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Set the whole tone at once

The same scene, as gentle or as far as you want it.

Every book defaults to its own natural rating. Move the whole story to any tier below, or fine-tune each dial on its own further down the page.

G
G
Clean throughout. No profanity, romance stays off the page, violence is bloodless, no gore.
PG
PG
Mild language, romance is implied, danger is real but not gratuitous.
PG-13
PG-13
Moderate language, some real violence, a touch of gore where the story earns it.
R
R
Strong language, intimacy fades to black, graphic gore, cruelty when the story earns it.
X
Unrestricted
No limits in any category, past any book's own natural ceiling. For consenting adults who want it all.

R and unrestricted require an age confirmation before they unlock.

Or tune it yourself

Not one slider. Five.

A preset is just a starting point. Each one moves on its own: say, strong language but no cruelty, or real stakes with romance kept off the page. Your exact comfort, book by book.

How far should this book go?

Language
Sex & romance
Violence
Gore
Cruelty

Tap a preset to set all five at once, or dial any single category to your exact comfort, any time, for any book. R and unrestricted ask you to confirm you're an adult first.

And it holds the line.

Whatever you set, it stays inside that line: every voice, every scene, even the tense ones, and it never drifts past it for drama. Change it any time, for any book. Comfort isn't an afterthought here. It's a control, the same one that keeps a G-rated reading safe for a child.

The shelf isn't fixed

Don't see your book? Ask for it.

New titles get added every so often. If there's a public-domain classic you'd love to step inside and it isn't on the shelf yet, tell us. If a clean public-domain text exists for it, it goes on.

Request a book → See what's already here →

Not sure it's public domain? Search Project Gutenberg →