Calca vs emdee

Calca is a powerful symbolic calculator that gives you instant answers as you type. It solves equations and simplifies complex expressions - it's a computer algebra system in your pocket! It's also a rich Markdown text editor so that you can explain your ideas alongside your calculations. Calca is perfect for professionals and students - anyone who works with numbers and equations. Variables and functions can be created with only a few keystrokes and can be manipulated with a rich library of operators and functions. Calca updates as you type - just like a spreadsheet. You can declare variables, edit their values and watch everything update before your eyes. Since everything is calculated on the device - no network needed - you get answers instantaneously. All calculations are stored as plain text so you can easily share them with other editors and move them from device to device. Calca has been designed to work with iCloud documents so all your devices can access your calculations - you'll always have the latest files ready for viewing and editing. Calca comes with a suite of examples to help you get started covering topics from home mortgages to kinetics. All these examples are fully explained within Calca itself. Are you still using a desktop calculator? Are you using the calculator with the giant buttons that came with your OS? Computers are much more capable than doing simple one-line arithmetic - put your machine to work with Calca! Calculation Features: • Variables `x = 42` • Functions `f(c) = 9/5*c + 32` and even recursive functions • Units `42 mph in kmph` and currency `¥599 in $` • Solves equations (`x + 2x + 4x = 42`, what is x?) • Matrices with inverses so you can solve linear equations • Sum, prod, map, and reduce operations on lists, matrices, and ranges • Trigonometry and complex numbers • Derivatives of functions • Logic operations and if statements • Binary math (& and |) and support for binary and hex number (`0xA9` and `0b1010`) • Keeps track of units (m, s, m/s, m/s^2, etc.) so you can verify your equations as you compute Please visit http://calca.io to see lots of examples. Thank you for looking!

A .md file from an AI chat, full of # and **. A browser can show it to you. emdee lets you rewrite it — in that same clean, formatted view. You don't need to switch between a reading mode and an editing mode. You edit the document while it stays clean and properly formatted, exactly as a .md document should look. Headings stay heading-sized, tables stay tables, and you type directly into the document. Want bold? Select the text and tap the button. You never type the symbols, and you never see them. Save, and it's still a plain .md file. ■ When you'd use it You saved an AI answer as .md — now you want it in your own words, not just readable AI drafted your travel plan or checklist — now the dates and details need to be yours You want to keep notes and minutes in .md, without looking up syntax as you write ■ What you can actually edit "emdee" is not a viewer — it's a true WYSIWYG Markdown editor. All of this works right in the formatted view: Headings (six levels), bold, italic, strikethrough, inline code, links Bullet lists, numbered lists, and checklists you can tick with a tap Block quotes, code blocks, horizontal rules Tables: insert with one button, and add or delete rows and columns from that same button's menu. Line breaks inside cells are supported Find and replace — Replace All comes back with a single undo It all sits in the format bar along the bottom, which rises with the keyboard so you can change formatting mid-sentence ■ Images An image in the same folder as the document you have open is drawn right there in the text. So is one in a folder below it. PNG, JPEG, GIF, WebP and SVG are drawn. So are images on the web (https://) HEIC — what an iPhone camera writes — is not drawn. Export it as JPEG and it is The first time, emdee asks permission to read that folder — one button, and it never asks again Anything it cannot draw shows its path in a frame instead The image button on the format bar puts one in. An image from outside the document's folder is copied into that folder first, and a file of the same name is never overwritten. What gets written is a relative path, so hand the images over along with the document. Exported HTML and PDF have the pictures embedded, so they travel on their own. The  in your file is not touched by any of this. ■ More features Table of contents — tap a heading to jump there. On iPad it opens as a column beside your text instead of covering it Print, and export to PDF, HTML, or plain text. Lines break on paper exactly where they break on screen, and tables never split mid-row across pages Light, dark, or follow the system Body text can follow the system text size or stay at a size you choose, and the line width is yours: fit the screen, or match A4 print ■ What you write stays a .md No proprietary format, no importing. The file you have open is the .md itself, opened in place where it lives — no copy is made. It saves back readable by GitHub, VS Code, Obsidian — anything. Even details like line breaks inside table cells are written the standard way, as an HTML br tag. Line endings (LF / CRLF / CR) and text encodings (UTF-8, UTF-16, and legacy encodings such as Shift_JIS) are preserved exactly as the file was opened. Files made on Windows keep their format intact. ■ One purchase — iPhone, iPad, and Mac The same document, on the same page layout, wherever you open it. ■ What emdee doesn't do File management belongs to the Files app, and sync belongs to iCloud Drive. There is no proprietary notes database and no cloud service. The only thing open is your .md file. Images are looked for inside the folder your document is in, and nowhere else. A reference pointing outside it (../ or an absolute path) is not drawn, and neither are HEIC, AVIF or TIFF files, or images over roughly 8 MB (24 MB per document). Anything that cannot be drawn shows its path in a frame instead. Questions and bug reports are welcome — see the support page.