REPLACEMENT BRIEF

notes & knowledge

Can AI replace Diarly?

EDITORIAL ANSWERYESCatalog estimate

An encrypted journal with prompts and templates is genuinely buildable — entries plus encryption. The product's polish is the Apple-native craft: sync, templates, and a writing surface refined for daily use — the journal that stays out of the way.

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
Build promptcatalog estimate

the prompt

Catalog estimate
Build 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.
Copy or open in an agent

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 · suggest a correction

what AI can build

Build a local-first private journal app with fast capture, full-text search, backlinks, tags, and Markdown export.

Editorial catalog estimate · not a completed build

The honest tradeoff

why people still pay

Journalers pay for the polish and the sync — templates, encryption, and apps — because a journal that is annoying to open is a journal with three entries.

what you lose

Encrypted iCloud sync across Apple devices

Daily prompt templates and health app integration

Markdown-first journal typography

Native macOS/iOS calendar view

Interactive map with travel journal entries

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.

Read the methodology →
evidence level
Catalog estimate

Editorial catalog estimate · not a completed build

price referencevaries

Typical paid plan · paid plan; billing basis requires review

open pricing source ↗price checked
replacement boundarypersonal replacement for the core loop

known limits · Encrypted iCloud sync across Apple devices; Daily prompt templates and health app integration

editorial reviewawaiting manual review

BUILD FEEDBACK

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Report the outcome. Submissions enter a manual evidence queue and never auto-upgrade the verdict.

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: Encrypted iCloud sync across Apple devices; Daily prompt templates and health app integration; Markdown-first journal typography; Native macOS/iOS calendar view; Interactive map with travel journal entries. 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.