Stay in flowe.

Flowe is the open-source firmware and companion app for the pocket-size Xteink e-ink devices. It shows only what you need to stay in flow — and blocks the rest.

Block

Block the noise.

Use the Block app — or hold the device's side button — and your phone blocks every distracting app until the countdown ends.

Notifications

See only what matters.

You choose what comes through — texts from people, your next meeting. Everything else stays silent.

Priorities

Focus on your priorities.

Nothing else on screen — just your list for today. Mark things done as you finish them.

The app

Start your day with intention.

Each morning, open the companion app and say your priorities in natural language. On-device AI sets your list and syncs it to the device.

Read

Just you and the page.

Read without your phone's distractions. Your library and page position sync from the companion app.

Workout

Focus on your workout.

One key press logs a set. The phone stays wherever you left it.

Sleep

Even the sleep screen keeps you focused.

In sleep mode, it still shows your priorities and your next calendar event.

Battery

90

hours of reading, on one charge

Your phone stays connected the whole time. It was fifteen hours before 0.7 — here is how we got there.

The library

The classics, at your fingertips.

Search a title, tap once, and it is on your device within a minute. Nearly 96,000 free books, with no account, no shop, and no files to hunt down.

95,938
Books
31,097
Authors
122
Languages
Free
All of them
Cover art from books in the Flowe library

From Project Gutenberg, Standard Ebooks, Wikisource and five more open collections.

Privacy

No account. No tracking. Nothing we can read.

No account.

There's nothing to sign up for and nothing to log into. Flowe doesn't know who you are.

Your books stay yours.

Books, priorities and notifications go straight from your phone to your device. We never see them.

Voice is a choice.

Speaking to the app sends that one sentence to a language model. Switch it to on-device only, use your own key, or never press the button.

The privacy page lists exactly what leaves your phone, and what never does.

The phone app

The companion to your device.

Say your day out loud, choose which notifications forward, set up Block, and pick a book from the free library. The device shows the result.

Day Start: What are your priorities today?
Today tab: date, weather, priorities
Priorities tab with Send to Device
The free library inside the app, showing book covers
For builders

Open, all the way down.

MIT-licensed firmware, a documented phone↔device protocol, and iPhone and Android apps in beta. Read every line that runs on the device.

Read the source Flash guide
  • 320 KB RAM The whole OS — framebuffer, BLE, ANCS, EPUB reader — takes turns inside an ESP32-C3 with no PSRAM.
  • No cloud Phone and device talk directly. There's no server, no account, nothing else to trust.
  • 1-file install Drop update.bin on the SD card and reboot — or pio run -e x3 -t upload.
  • JSON over BLE A readable card protocol, examples in the repo.

Get started.

Get the device

An Xteink X3 (about $60, 58 grams) or an X4.

Flash Flowe

Copy one file to the SD card and reboot — guide.

Get the app

On iPhone, join through TestFlight. On Android, join the tester group first, then accept the invitation on Play.

Not ready yet? Leave your email and we will send the links, and tell you when the next release lands.