# Day0: Private Diary — A private diary, kept local > A private diary, kept local (iPhone/iPad app by MARQUE & CROWN INC..) - Source: https://appshunter.io/ios/app/day0-private-diary/id6793105576 (this page in markdown: same URL + `.md`) - Developer: [MARQUE & CROWN INC.](https://appshunter.io/developer/6793105578) - Category: Lifestyle, Utilities - Price: Free - Age rating: 9+ - Requires: iOS 17.0 · 26 MB - Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan) - Released: 2026-09-13 - Data updated: 2026-10-04 - User reviews in markdown: https://appshunter.io/ios/app/day0-private-diary/id6793105576/reviews.md ## What is Day0? Day0 is a diary that only you will ever read. Log the moments that matter: who they were about, when they happened, and a note only you need to understand. By default everything stays on your phone. If you want the same records on another device, turn on optional sync: it is end-to-end encrypted with a key only you hold, so no one else can read what you wrote. What's inside: • Log a moment in a few taps, or let the built-in timer keep the record for you • Build a quiet profile for each character you care about: birthday, aliases, your own notes • Keep track of the things you've collected, and watch the cost of each use settle over time • Review your history as calendars, timelines, and monthly look-backs • Lock your most private notes behind Face ID; the lock screen and widgets never reveal content • Nine hand-tuned themes, a quiet mascot, and achievements that never nag • Encrypted backups you control, exported as a single password-protected file There's no streak to keep, no leaderboard, no nudging. Write as much or as little as you want. Day0 keeps the record, quietly. ## Version history (last 4 releases) ### 1.0.9 — 2026-09-28 A fresh new look throughout: • The character library, review, logging, relics and settings pages have all been redesigned • Share cards have been rebuilt, and images in a character's gallery can now be shared in full resolution • The lock screen now says it plainly: until you verify, it won't show your characters, entries or notes We also fixed a few issues with turning on Face ID and with locking automatically after the app has been in the background. ### 1.0.8 — 2026-09-23 This update is about moving to a new iPhone without losing anything: • A backup reminder card now appears on the Stats page after a week of use or ten records, nudging you to export an encrypted backup • New achievement "Safe Keeper": it lights up the first time you export an encrypted backup • "Moving to a new iPhone" in About explains both paths: transfer with Quick Start, or export a backup and import it Roles without a photo now use the role's own colour behind their initial, so they are easier to tell apart. ### 1.0.7 — 2026-09-19 Fixed a batch of issues that got in the way: • The "Turn on App Protection" entry points wouldn't open • At the largest system text size, the mood picker was out of reach • Traditional characters slipped into the Simplified Chinese interface • The last row on each main tab sat under the floating bar The interface got a pass too: card corners and surfaces are now consistent everywhere, list chevrons no longer vary screen to screen, the relics list fits more at a glance, and the selected filter is finally obvious. ### 1.0.0 — 2026-09-13 No release notes. ## More apps by MARQUE & CROWN INC. - [GalVoyage](https://appshunter.io/ios/app/galvoyage/id6809487301) All apps by MARQUE & CROWN INC.: https://appshunter.io/developer/6793105578 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-04.*