If you are searching for a Mini Diary alternative, you already know what you liked: a simple desktop journal that stayed local, required no account, and got out of the way.
The original Mini Diary became unmaintained over time and its dependency base aged out. Finding a replacement that keeps the same philosophy — private, offline, no service layer — is harder than it sounds. Most alternatives add something you did not ask for.
What most alternatives get wrong
The usual substitutes fall into one of two patterns.
The first is a cloud notes app with a dark mode and a "private" label. It still requires an account, still syncs to a server, and still turns your writing into data that lives somewhere else. The local story is an afterthought.
The second is a general-purpose tool that technically supports daily journaling but is built around collaboration, linking, and workspace features. The privacy model is shallow because the primary use case is not private.
Neither of those is a Mini Diary alternative in any meaningful sense. They are different products with different assumptions.
What a real replacement needs
If you used Mini Diary and want something that covers the same ground, the requirements are not complicated:
- Local storage you can locate. You should know where the file is, be able to back it up manually, and never need to authenticate with a service to open it.
- Offline by default. The journal should work with no network, not in a degraded mode, but as a fully working product.
- Encryption before storage. Mini Diary stored entries as plaintext JSON. A stronger successor should encrypt entries before writing them to disk, not treat encryption as an optional add-on.
- Import from Mini Diary. You should not have to start from zero. If years of entries exist in Mini Diary's JSON format, a real replacement should bring them in.
- Export that stays legible. The data path out should be as clear as the data path in.
The migration path from Mini Diary
Mini Diarium imports Mini Diary JSON directly. The process is one step: open Mini Diarium, go to the import menu, select the Mini Diary JSON export file, and the entries come in with their original dates.
There is no format conversion required and no third-party tooling. If you have a Mini Diary export, the migration is a single file open.
After import, entries are re-encrypted at rest using AES-256-GCM. The plaintext that Mini Diary stored locally is not preserved in the new database. The encryption happens as part of the import, not as a later step.
Where Mini Diarium fits
Mini Diarium was built specifically because the Mini Diary gap was real. It runs on Windows, macOS, and Linux. Entries are stored in a local SQLite database, each one encrypted with AES-256-GCM before it is written to disk. There is no HTTP client, no telemetry, and no account requirement.
The design is deliberately narrow. It is a journal, not a knowledge base or a general notes workspace. That is the same call Mini Diary made, and it is still the right one for this use case.
Beyond Mini Diary imports, it also supports imports from Day One JSON, Day One TXT, and jrnl JSON — in case your writing history is spread across more than one tool. Export is available in JSON and Markdown, so the data path stays open regardless of what comes next.
For the full product overview, read the encrypted journal guide. If you are comparing this to a cloud-based replacement, the post on encrypted journal apps vs cloud notes apps covers the architecture differences directly.
The practical takeaway
Mini Diary set a clear standard: local storage, no account, simple interface, private by default. Most alternatives do not meet that standard because they were not built with the same constraints.
Mini Diarium is built from the same constraints. If you have a Mini Diary export and want to keep writing in the same vein — local, private, encrypted — the download is available for all three major platforms and the import takes one step.