Diarly: People pay for a writing surface they trust for years, plus migration tools, sync, and tiny interaction details that disappear into habit.
REPLACEMENT BRIEF
notes & knowledge
Can AI replace Diarly?
Build a local-first private journal app with fast capture, full-text search, backlinks, tags, and Markdown export.
Build the personal version →AT A GLANCE
- price
- varies
- replaceable scope
- personal replacement for the core loop
- build time
- one sitting
what AI can build
Build a local-first private journal app with fast capture, full-text search, backlinks, tags, and Markdown export.
Diarly's solo core is compact: build a local-first private journal app with fast capture, full-text search, backlinks, tags, and Markdown export. A competent builder can reach a useful personal version in one sitting, while the paid product mainly wins on polish, sync, importers.
Editorial catalog estimate · not a completed build
The honest tradeoff
why people still pay
what you lose
xconflict-safe multi-device sync
xmature importers and exporters
xcollaborative editing and sharing
xnative mobile clients
Start with existing software
prior art · use these instead of building, if you'd rather
EVIDENCE LEDGER
What this page can prove
The verdict judges replaceability. The evidence level records what DeepFeather actually checked.
Editorial catalog estimate · not a completed build
Typical paid plan · paid plan; billing basis requires review
known limits · conflict-safe multi-device sync; mature importers and exporters
Build promptcatalog estimate
the prompt
Catalog estimateBuild a usable personal replacement for the core loop of Diarly. Use exactly this stack: Tauri 2 + React + TypeScript + SQLite. Primary job: Build a local-first private journal app with fast capture, full-text search, backlinks, tags, and Markdown export. Start from an empty folder and create the complete working project. Make the default mode single-user and private. Store user data locally unless the core job requires the declared self-hosted database. Do not add analytics, telemetry, ads, or third-party accounts. Put every secret and external credential in .env and provide .env.example. Use realistic sample data that is clearly labelled and easy to delete. Implement the smallest polished interface that completes the core loop end to end. Include clear empty, loading, validation, success, and failure states. Add import and export so the user is not trapped in the app. Use accessible keyboard navigation, labels, focus states, and sensible contrast. Validate untrusted input and never log secrets or private file contents. Deliberately exclude these paid-product advantages: conflict-safe multi-device sync; mature importers and exporters; collaborative editing and sharing. Do not fake integrations, network effects, proprietary data, model quality, compliance, or security claims. Where an external API is optional, keep the app useful without it and explain the degraded mode. Write focused unit tests for the data model and the most important workflow. Add one end-to-end smoke test that proves the core loop works. Create a README with setup, permissions, architecture, data location, backup, and limitations. Add scripts for install, development, test, build, and a production-style local run. Run the tests and build before finishing, then fix errors rather than merely describing them.
The prompt stays readable first. Choose a launch option when you are ready.
$ open in your agent (prompt prefilled, you press enter) or copy it raw · improve it via PR
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questions
Can AI replace Diarly?
Likely for the core workflow, based on an editorial catalog judgment. This entry is not a verified build yet; use the prompt as a starting point and validate the result against your own acceptance criteria.
How much does Diarly cost?
Diarly's pricing is usage-based or varies by plan. Use the linked pricing source for the current amount; the catalog last checked it on 2026-07-31.
What do I lose by replacing Diarly?
Honestly: conflict-safe multi-device sync; mature importers and exporters; collaborative editing and sharing; native mobile clients. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to Diarly?
Yes — AppFlowy (Local-first open-source workspace with documents and databases.), Logseq (Open-source local knowledge graph and outliner.). Using prior art is also a valid exit; the prompt is for when you want it exactly your way.