What ONEDiary is for
ONEDiary helps people keep everyday memories without making a network connection or account the price of admission. A person can write and read entries on an Android device, then add photos, places, moods, tags, calendar context, and search as the diary grows. The app currently supports phones and tablets running Android 10 or later and is distributed through Google Play.
Cross-device synchronization is optional. It becomes available to signed-in users when Data sync is enabled, and Offline mode can pause Firestore synchronization while leaving pending changes on the device. AI reports and diary chat are also optional: they read diary content only after the person grants diary access, and a report requires at least seven entries.
Who builds it
ONEDiary is developed and published by Soosu Studio, Inc. (수수스튜디오 주식회사), a South Korean software company that publishes practical Android apps. Product information on this site is checked against the current app behavior, the official Google Play listing, and the publisher's privacy information.
How to verify the product
Use the official ONEDiary website for stable product explanations, the Google Play listing for current availability and release-dependent details, and the official privacy policy for legal privacy terms. Ratings, review totals, pricing, and release details can change by time or region, so they should be checked at the source instead of copied from an older page. For a question about an account, synchronization, AI access, billing, or an app problem, use the official support route shown on the Google Play listing.