ZZZ MDEditor

Notes, tasks, AI prompts, and your own databases — all in one offline, on-device app.

ZZZ MDEditor is a local-first, all-in-one app that brings your notes, tasks, AI prompts, and custom databases together around Markdown. Everything is stored on your device and works offline — no account required.

Markdown notes

• Editor with live preview
• [[wikilinks]] and automatic backlinks
• Graph view to see how your notes connect

Tasks & schedule

• Checkboxes, priorities, due dates, custom statuses
• Task board (kanban) and agenda views
• Calendar with holidays (Japan, Asia, Europe and more)

AI prompt management

• Organize and reuse your favorite prompts in Markdown

Custom folders (use them like a database)

• Define your own fields: text, number, date, choices, checkbox, phone, photo, location, and more
• Sub-tables with subtotals, and computed fields
• Search, sort, and compact list views; export and share a folder as JSON

More

• English and Japanese (follows your device language)
• Fully local, offline-first

Build your own databases for budgets, inventory, reading logs, subscription tracking, and more.

Pricing & ads

• Free to use, supported by in-app ads.
• On the free plan, some actions (importing external data, exporting/sharing as JSON, sharing templates) run after you watch a rewarded ad.
• Pro (¥180/month, auto-renewing) removes ads and lifts the limits on files, records, and folders.
• Payment is charged to your Apple ID at confirmation of purchase and renews automatically unless auto-renew is turned off at least 24 hours before the end of the period. Manage or cancel anytime in Settings > Apple ID > Subscriptions.
• Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/