Four hides. One hand-finished spine.
Oxblood, forest, midnight, and aged walnut. Foil-stamped titles, a stitched edge, and a ribbon that remembers where you stopped. No two volumes need look alike.
Custom binderyPrivate by architecture · bound by hand
A Private LeatherSanctuary for theUnhurried Mind.
Dearvell is an offline-first journal with the weight of a real book: tactile paper, damp ink, a 2700K lamp. Your pages live on your phone first, then travel to a private, encrypted Google Drive vault — never into a feed.
No ads, everNo AI trainingWorks in airplane mode
Local by defaultSQLite · Drift · no lock-in
AES-256-GCM vaultencrypted before upload
No ad networkszero third-party sale
Ed25519 leasesoffline entitlements
Interactive demo · no install
Open a volume. Try the bindery.
Three small rooms from inside Dearvell, rebuilt for the browser. Change a hide, write on the paper, open the study shelf. Nothing you type here leaves this page.
- 01The Bindery WorkshopChoose from four archival leathers and foil-stamp the spine.
- 02Tactile Page EditorWrite, mark a line, press a date stamp, or let a dictation stream land.
- 03Minimalist Study ShelfVisit the walnut shelf and unlock Sanctuary Settings from the portrait.
A local simulation. No microphone access, no network calls, no journal data collected.
9:41DEARVELL · SANCTUARY
The Bindery Workshop
Live coverFour hides, one hand-finished volume. Pick a dye and letter the spine.
The Quiet Hours
Zero Soleil · Vol. I
Leather dye · four archival hides
Tactile Page Editor
2700 KThursday · 29 OctoberDearvell
Rain against the window. The kettle has just gone quiet.
I want to remember how unhurried this feels — the lamp low, the page open, nowhere else to be.
Highlighter
Select a line and choose a highlighter, press a stamp, or dictate. This demo stays in your browser.
Minimalist Study Shelf
SanctuaryWalnut, worn brass, a pen jar, and one portrait that opens the room behind the room.
The walnut desk
Sanctuary Settings
Biometric gate
Fingerprint · hardware-backedLamplight
2700 K · warmLamp brightness
Warmth, not glareCloud vault
Google Drive · appDataFolderEntitlement lease
Ed25519 · offline-validSettings preview onlyNever uploaded
Tap the portrait or the brass plate to open Sanctuary Settings.
The Bindery
A book is a promise made from materials.
Dearvell is built as a physical object first. Every screen begins with the grain of leather, the temperature of lamplight, and the discipline of keeping digital machinery out of the moment.
Paper that behaves like paper.
Warm 2700K light, cream stock, a wet-ink sheen that dries as you write, and page turns with actual weight. The interface disappears; the page remains.
Tactile page engineBound to outlast the feed.
No streaks, no engagement prompts, no ads between paragraphs. Your first volume is free forever, and every entry you have written stays readable even if a pass lapses.
A quieter economyBinding note
No. 004
No. 004
“Make the room quiet enough that the thought can arrive, sit down, and stay a while.” — Zero Soleil
The architecture
Private by construction, not by promise.
Privacy is not a settings toggle bolted onto a cloud app. It is the shape of the system: local-first storage, narrow OAuth scope, encrypted archives, and entitlements that keep working when the signal does not.
100% offline-first
Your journal opens in airplane mode. Pages live in a local SQLite + Drift engine with SQLCipher encryption — no server round-trip, no cloud lock-in, no spinner between you and the page.
Private Drive vault
A hidden drive.appdata archive encrypted with AES-256-GCM. The DEK is wrapped by our server’s Master KEK and strictly bound to your authenticated backup_drive_email.
Biometric sanctuary gate
Fingerprint or face unlock on cold start, backed by the device’s hardware keystore. The journal key does not leave the phone just because the screen turned off.
Ed25519 offline leases
Trial and entitlement leases are signed on the server and verified locally. No nagging internet checks mid-sentence, and existing entries are never locked from reading.
Journal prose, titles, photos, and voice memos never sit on Zero Soleil servers.
Read the OAuth scope and key-escrow details in the policy.
The private page
Your words are not our raw material.
No ad networks. No third-party data sale. No journal prose, titles, photos, or voice memos used to train AI. The only analytics are anonymous session segments and crash traces, explained in plain language.
The Brass Ledger
One honest ledger. No velvet trapdoor.
A full week to live with the bindery, a first volume that stays free forever, and a pass for people who want every shelf and every hide. Billed through Google Play.
The Brass Ledger · prices in INRGoogle Play billing · cancel anytime
The first week
7-Day Full Bindery Trial
Every shelf, every hide, every room. No credit card required — just sign in with your Google account and live with it.
₹0 for 7 days
- Full access to all volumes
- Automated encrypted Drive vault
- No card, no auto-charge
The single sanctuary
Free Forever
The first bound volume, core writing, and manual encrypted backup. The page does not expire when the trial does.
₹0 forever
- First bound volume, full read/write
- Manual encrypted Drive backup
- Core writing and page tools
The full bindery
Master Bindery Pass
Unlimited diaries, automated encrypted Drive sync, cross-diary links, and the full tactile stationery cabinet. Existing entries stay readable if the pass ends.
Start your 7-day trial
No card on trial. Cancel in Google Play. Existing pages remain readable.
Founding rate is capped at 200 seats. Subscription renews through Google Play unless cancelled at least 24 hours before renewal. Full eligibility, refund, and cancellation terms are in the Terms of Service.
The next page is yours
Bind a quieter room for your thoughts.
Dearvell is free to begin. Sign in, choose a hide, and let the lamp do the rest.
Android · com.zerosoleil.dearvellOffline-firstNo ads