Calc vs PlainText Pro Editor

Calc-U-59 is a TI-59, TI-58, and TI-58C emulator for iPhone, iPad, and Mac. It runs the original ROM, so every program, module, and quirk works exactly as it did on the real hardware — with virtual magnetic cards, a PC-100C printer, all fourteen Solid State Software modules, and a CPU-level debugger for anyone who wants to look under the hood. CYCLE-ACCURATE EMULATION The TMC0501 processor is emulated at the cycle level, reproducing the exact behaviour of the original hardware — including the TI-58C's constant memory, preserved across restarts. The Master Library ROM and many more modules are included. INTEGRATED DEBUGGER Inspect program memory, data registers, CPU state, and internal SCOM registers live as the machine runs. Step through instructions one at a time, or let the emulator run and freeze it at any point. You can even run your own assembly programs! Available on iPad (landscape) and Mac. PAPER TAPE PRINTER A functional recreation of the PC-100C thermal printer with dot-matrix font rendering. Trace exactly what programs print and why. Copy output as plain text or as a high-resolution bitmap. MAGNETIC CARD READER Load and save programs and data registers as card files, stored on your device and synced via iCloud. Bring old listings back to life and run them under the debugger. STATE FILES Load .ti59 and .ti58(c) state files to instantly configure the machine with a program, registers, and flags — ideal for sharing reproducible scenarios or revisiting known machine states. SOLID STATE MODULES Select a Solid State Module and run programs from there. Whether you're bringing an old program back to life, running the Master Library modules, or exploring how these machines actually worked under the hood, Calc-U-59 gives you a faithful TI-59 in your pocket.

PlainText Pro is a powerful text editor, code editor, and notepad built for speed, clarity, and productivity. Whether you’re writing notes, editing code, or working with plain text files, this app delivers a fast, smooth, and distraction-free experience. Designed for developers, students, and everyday users who need a reliable editor on the go. > ALL-IN-ONE EDITOR • Text Editor • Code Editor • Notepad • File Viewer Everything in one lightweight app. > Key Features • Multi-Tab Editing Work on multiple documents at once and switch instantly. • Syntax Highlighting Optimized for Swift and structured text with a fast, real-time engine. • Line Numbers & Code Blocks Stay oriented with visual structure and depth-based block highlighting. • Ultra-Fast Performance Smart background processing keeps typing smooth and responsive. • Clean, Distraction-Free UI Minimal design focused on productivity. • Import & Export Files Open and save plain text, code, JSON, XML, and more. • Customizable Editor Adjust font size, toggle syntax highlighting, line numbers, and code blocks. • Smart Selection Tools Quickly mark and select text ranges with precision. • Clipboard & Quick Actions Paste, clear, and manage content instantly. > Designed for Speed PlainText Pro uses an optimized syntax engine and smart rendering to ensure real-time feedback without slowing you down. > Built for Creators & Developers From quick notes to structured code editing, PlainText Pro gives you the tools you need without unnecessary complexity.