# Ultimate Diary — Diary, Calendar & Life Log > Diary, Calendar & Life Log (iPhone/iPad app by Yu Hou.) - Source: https://appshunter.io/ios/app/ultimate-diary/id6791461017 (this page in markdown: same URL + `.md`) - Developer: [Yu Hou](https://appshunter.io/developer/6791461019) - Category: Utilities - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 18.0 · 16 MB - Languages: American English - Released: 2026-10-28 - Data updated: 2026-10-31 ## What is Ultimate Diary? The days worth keeping are rarely just yours. Write them down, share them with the people in them, and come back to them whenever you like. SHARE A BOOK Invite families or friends into a book and write in it together. Entry text is encrypted on your device, with a key per book, before it is uploaded. WRITE Markdown as you type, with tables, checklists and photos. Turn on location and each entry quietly notes where you were and what the weather was doing. MORE THAN A DIARY Separate books for different things: a diary, plain notes, a "firsts" timeline for the moments worth dating, a project and task list, a birthday book that reminds you, and a countdown book that lays every date that matters on one timeline — the future above, the past below — with a small gear you turn to travel between them. PLAN YOUR DAYS A calendar for what's coming, alongside the entries about what already happened. SEE WHERE YOU'VE BEEN Entries that know where they were written become pins on a footprints map, grouped as you zoom out. YOURS TO KEEP Export everything — every entry as Markdown, photos at full size, and the same data as JSON. With Pro, the app keeps a copy up to date in your own iCloud Drive automatically. Lock the app with Face ID. SIGN IN YOUR WAY Email, Sign in with Apple, or Google. FREE 100 entries, 9 books, 2 photos per entry. Export included. DIARY PRO Unlimited entries and books, 5 photos per entry, and automatic iCloud backup. Monthly or yearly. New subscribers start with a 1-month free trial. When it ends, the plan you chose is charged to your Apple Account and renews automatically unless cancelled at least 24 hours before the end of the current period. Cancel during the trial and you won't be charged. Manage or cancel in Settings. Terms of Use: https://legal.deardiarys.com/terms Privacy Policy: https://legal.deardiarys.com/privacy ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly Pro Membership | $2.99 | per month | | Yearly Pro Membership | $29.99 | per year | ## Is Ultimate Diary safe? Not enough ratings yet to assess Ultimate Diary. ## Is Ultimate Diary legit? Ultimate Diary has limited verification signals. The AppsHunter Legitimacy Score for Ultimate Diary is 50 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 1 release) ### 1.0 — 2026-10-29 No release notes. --- *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 2026-10-31.*