RPN vs MarkText

RPN-45 HD is a complete simulation of the scientific hand-held calculator HP-45 from 1973. Processing times and behavior have been carefully modelled after the original. Switch to the "Super-45" mode and watch the HP-45 do things never seen before. Features: • Photo-realistic look based on an existing device • Animated keys with adjustable click sound and visual feedback • All functions and operations of the HP-45 fully implemented • Supports "secret" timer. Use it as 12/100-hours timer or even as a chess clock. • Optional hyperbolic functions • Simulation of the HP-45's computation times (optional) • Correct wrong number entries by swiping left across the display • Cut/copy/paste display value • "Live" display of stack and all memory registers (in landscape mode) • Built-in manual • 30 selectable background images, even add your own • HP-91-like paper tape printer: - Supports MAN, ALL, and NORM modes - Quickly insert arbitrary text - Delete any line - Send tape via E-Mail or to any AirPrint-capable printer - Ribbon color black or blue - Optionally print negative results in red - Print stack and registers • Supports external hardware keyboard Turn on "Super-45" and enjoy a super-charged HP-45: • Complex numbers: available for almost all operations and functions • More memory: twice the number of memory registers. • "Continuous" stack and memory registers • Improved functions: - Raise any number to any power - Factorial of any number, incl. complex - Logarithm and square root of negative numbers - Preset timer with the iPad's real time - Chess clock mode • New functions: - Solve linear equations in two or three unknowns - Find the roots of quadratic and cubic equations - Statistics: normal distribution and correlation coefficient of paired variables - Linear regression, combinations, permutations - Logarithm to any base, incl. complex - Integer and fractional parts - Display rounding - Random numbers in a given range - Day of the week for any date between Jan 1, 0001 and Dec 31, 9999 - Easter date for any year between 1583 and 4099 - Support for Julian dates - Number of days between any two dates - Last Stack - Convert display value to hexadecimal - Percentage of sum - Register arithmetic includes sum registers and LAST x - Clear all registers - Backup registers in a protected area • Enhanced user interface: - Visual indicators for prefix keys and angular modes - Small values switch to scientific notation if required - Localized decimal point - Thousand's separator For more information and sample calculations visit cuveesoft.ch/rpn45/en WHAT USERS SAID: "A great simulation of the HP-45. Beautifully made, with a lot of attention to small details." "This is by far the best RPN calculator available for the iPad!" "This is one of the most accurate but also nicest looking emulators I have come across for the HP-45, or any vintage HP calculator for that matter." "This is exactly what I've been searching. My HP 45 packed up some time ago. Thank you so much!"

MarkText is a minimalist, lightweight Markdown text editor with local-first storage and iCloud sync. It supports syntax highlighting and comes with multiple built‑in preview themes, ideal for notes, writing, memos, journals and quick notes. Export to PDF, PNG or HTML in one tap for easy sharing. ## Key Features - Markdown syntax highlighting. - Built‑in HTML previews with various styles. - Move cursor by sliding the toolbar above the keyboard; - Simple import & export, edit files in Files app in place. - One-tap conversion to long image, multi-images, PDF or HTML. - Easily share to Dropbox, Email, or open with other apps. - Full-text search, word count, regex find & replace; - Sync between iPhone, iPad and Mac via iCloud Drive. - Mermaid and Graphviz support for editing and previewing flowcharts & diagrams. - MathJax support to edit and preview mathematical formulas. ## Import & Export Multiple import and export methods available - Directly manage file list via the Files app. - Import / export files through iTunes. - Upload and download files over WiFi. - Share MD, HTML, PNG, PDF files to other apps. ## Keyboard Toolbar - Tap buttons to quickly insert Tabs, headings, lists, code blocks, images, hyperlinks and more. - Customize toolbar buttons and reorder them. - Swipe toolbar left/right to move cursor fast. - Pinch toolbar with two fingers for quick text selection. - Custom quick input phrases and templates supported. ## Syntax Highlighting & HTML Preview - Built-in preview themes for light and dark modes. - Customizable preview style for code blocks. - Supports multiple Markdown flavors: Standard Markdown, MultiMarkdown, GitHub Flavored Markdown. ### GMF (GitHub Flavored Markdown) Syntax Supports extended syntax: strikethrough, tables, task lists, code blocks. #### Task Lists Lists starting with [ ] or [x] indicate incomplete or completed tasks. Example: - [ ] Incomplete - [x] Completed ## iCloud Drive Sync - Automatically sync and store all note files across your devices via iCloud Drive. - View synced note files inside the iCloud Drive folder on Mac. ## Supported File Extensions md, mmd, markdown, markdn, mdown, mkdn, markd, txt, text, etc. ## Other Features - Swipe left on note item to delete; long press to rename. - Add "#Hashtag" or "@Mention" inside notes to create tag categories, equivalent to folders. - Deleted notes go to Trash and stay there until permanently removed. ## scheme - Open App: marktext://x-url-callback/ - Open note: marktext://x-url-callback/open?name=xx - New note: marktext://x-url-callback/new?content=xx - New note from pasteboard: marktext://x-url-callback/new?pasteboard=1 If you have questions or suggestions, contact: xappbox+mt@gmail.com