Book Butterfly

A reader's companion, for the long haul.

A reading companion for people who actually read — to-read lists that don't accumulate guilt, finished-book reflections that pay forward, and the gentle structure that turns reading into a habit rather than an aspiration.

Get notifiedSee features

What you get

The features that make Book Butterfly useful day-to-day.

Living to-read list

A to-read list that respects how taste evolves — books drop off without shame when they no longer call to you. The list is a conversation, not a debt.

Finished-book reflections

Finished-book reflections that crystallise what you took from the read — not a review for strangers, a note to your future self about why this book mattered.

Reading rhythm

Reading rhythm that survives life — pages-per-day targets you can hit on tired evenings, recovery from reading slumps, and the slow compounding of a steady practice.

Honest taste log

An honest taste log that tracks what you actually love versus what you said you'd love. Useful when picking the next book, useful when remembering the best one of the year.

Why Book Butterfly

Built for the people who'll actually use it, not for tick-box procurement.

Right-sized

Designed for daily use, not enterprise checkbox compliance. The features that matter, none of the ones that don't.

Sovereign infrastructure

Hosted on our own servers in Estonia. No US-jurisdiction tracking, no third-party analytics, no data sales.

Get notified at launch.

Currently in private build. Add your details and we'll let you know when it's open. b-systems.enquiries@proton.me

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