Kalc vs ZZZ MDEditor

Unit Converter, Calculator, and World Clock. The simple & clean UI to get the results you need for everyday use as quickly as possible.

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/