RedoCalc vs ZZZ MDEditor

This is a calculator for people who only use it for simple calculations, such as adding up receipts or calculating the cost of a meal split between several people, but who are always worried about whether the input was correct. As it is a simple calculator, the only operations it can perform are - Four arithmetic operations (addition, subtraction, multiplication, division) - Percentage calculations (including calculations such as consumption tax using percentages) . The results are displayed as numbers with a digit symbol. There is no complicated exponential display. The calculation proceeds in the order of the keys you enter. There is no priority for multiplication or division. The formulas you enter are displayed in order in the upper area as a history. If you tap the white part, it will turn yellow and you will be able to modify that part. (You can modify not only numbers, but also arithmetic symbols such as + and ×.) If you tap “=”, the expressions from the first line to the last line will be recalculated. The result will be automatically copied, so you can switch to other apps and paste the value there.

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/