SIMO vs StackCalc Calculator

~~~~~~~~~ Check out our FREE app Console, which is powered by SIMO's MATLAB interpreter. If you find Console useful, SIMO is definitely suitable for you. ~~~~~~~~~ SIMO is a feature-rich development environment for MATLAB. We have developed a version of MATLAB interpreter that works for commonly used language syntax and functions for beginners. [+] Who will find SIMO useful? - Students learning the basics of MATLAB. - Course instructors of fundamental MATLAB courses. - Individuals whose works do not depend on specialised toolboxes and advanced language syntax. [+] What is SIMO? - It is an integrated environment for running MATLAB. - It allows you to create, edit, and run MATLAB code on iOS devices. - Unlike other apps that compute on the cloud, it performs computation entirely locally on device. No internet connection is needed. You don't miss a single app feature even if you are offline. [+] What SIMO cannot do? - It does not completely replace MATLAB, as it has only a subset of built-in functions of MATLAB. - It does not support advanced features such as Simulink or creating user-interface. [+] One app, all platforms - You will be amazed at how much work you can do on a phone. The app is designed to let you work effectively on smaller screens. - The iPad app features a split-screen layout. You can enjoy a full-screen workspace, or work on two views simultaneously. - The iPad app runs on Macs with Apple silicon as well. Buy one app and it works on all of the platforms. [+] MATLAB interpreter - The interpreter works for language syntax that is essential to survive a MATLAB course. It provides the most commonly used built-in functions for learners. - The interpreter computes on your device locally. You will not miss a single app feature even if you go completely offline. - SIMO comes with a full set of documentation and user guides. It is offline accessible and full-text searchable. [+] Visualization tool - Plots are rendered in real-time using your device's computing power. Operations such as updating line attributes, pan and zoom are fast and responsive. - Stunning 3D plots are rendered by the device's GPU in real-time. Pan, zoom or rotate with multi-touch gestures, trackpad or keyboard shortcuts. - Plot attributes are editable through the built-in user-interface. You can improvise with different styles without entering a single line of code. [+] Command console - You can run one or many lines of code from the command console. It supports line numbering, auto-intent and syntax highlighting. - Search over thousand lines of output data instantly. You'll never get overwhelmed by the sea of numbers. - Output data are formatted automatically to fit the screen size or app window. Data are always neatly presented however you resize the app. [+] File manager - Files can be synced across all of your iCloud Drive enabled devices (iPhone, iPad, Mac). Or, you can store them locally on device. - Tons of files buried in tons of folders? No worries. The search feature will help you find an item instantly. - It has features you expect from a useful file manager. Add, copy, delete, duplicate, move, rename, sort and more. [+] Script editor - It has features you expect from a useful script editor. Syntax highlight, auto-indent, line numbers and more. - Search for a word in a script. Replace occurrences with another word. - Recent items are accessible from your finger tip. It is a useful feature for navigating through frequently accessed files.

The smarter way to calculate. StackCalc is a high-precision scientific RPN calculator, equation solver, pocket graphing instrument, and visual math companion for iPhone, iPad, and Apple Watch. Inspired by legendary instruments like the HP-32SII and designed alongside our physical hardware ecosystem, StackCalc brings tactile speed, mechanical certainty, and structural clarity to Apple devices—with zero ads and zero subscriptions. Whether solving multi-variable formulas, integrating probability curves in AP Statistics, computing exact mixed fractions in physics labs, or building number sense in elementary school, StackCalc eliminates parentheses, prevents syntax errors, and keeps intermediate answers visible at every step. WHY STACK MATH (RPN) WINS • Zero Parentheses: No syntax errors or bracket anxiety. Enter numbers, tap operations, and calculate at the speed of thought. • Visible 4-Level Stack: Intermediate results stay visible in X, Y, Z, and T registers. You never lose your place. • 10 Heritage & Material Themes: Switch between classic tributes (Pioneer Brown, Pioneer Black, RetroFuturism) and 3D-printed material palettes (Stealth Industrial, Cosmos, Voyager, Synthwave, Clear Lab). • Continuous Tactile Field (CoreHaptics): Custom mechanical snap-dome waveforms and key-seam boundary pulses provide physical confirmation on every keypress. ERGONOMIC APPLE WATCH ARCHITECTURE • 100% Standalone Math: Full stack math, equation solvers, and statistics run natively on your wrist without your phone. • 75% Direct Display-as-ENTER: The top 75% of the watch screen acts as an authoritative ENTER target for effortless one-handed tapping. • 25% Drag-to-Inspect Stack: Drag from the bottom bezel to inspect stack depth, or scrub registers and tutorials with the Digital Crown. • Complications & Smart Stack: Glanceable active registers on Always-On watch faces with a true #000000 OLED canvas. EXACT FRACTIONS, SOLVER & POCKET GRAPHING • Proper Mixed Fractions: Natural entry and display (e.g. 2 1/8) without decimal rounding loss, plus step-by-step SIMP reduction. • Instant Curve Plotting: High-contrast graphing canvas to trace functions, inspect roots, and shade definite integrals. • Adaptive Romberg Integration: High-precision Richardson extrapolation for definite integrals with automatic tail convergence on probability distributions. • Multi-Variable & Polynomial Solver: Store formulas, solve for any unknown variable, and compute real or complex polynomial roots. • STEM Toolkit: Complex numbers, 2-variable statistics, and Base-N programmer modes (HEX, DEC, OCT, BIN). STACKCALC 6: VISUAL LEARNING MODE • Built-In K–8 Companion: Switch into Visual Learning Mode (StackCalc 6) for a distraction-free elementary and middle school math experience aligned with Singapore Math and Common Core. • Live Pictorial LCD Modes: Numbers dynamically render on the dot-matrix LCD as Ten-Frames, 20-Bead Rekenrek Number Racks, jump-arc Number Lines, Analog Clocks with ticking second hands, Dice, and Ratio/Frequency Tables. • 5-Level Adaptive Quiz Engine: Progressive mental math fluency (L1–L5) with response-time mastery scoring and celebration banners. • Classroom Ready: 100% offline, COPPA & FERPA safe, and paired with free 3D-printable Gridfinity blocks and a 43-page Teacher Guide at stackcalc.io. COMPREHENSIVE VOICEOVER & POWER WORKFLOWS • Queued VoiceOver Announcements: Spoken feedback for stack pushes, shifted (f/g) operations, top-row softkey menu options, interactive tutorial steps, and spoken StackCalc 6 quiz questions. • Direct Touch & High Contrast: Tactile boundary pulses for spatial orientation, paired with high-contrast dot-matrix LCD rendering (>12.5:1 contrast). • Hardware Keyboard & Shortcuts: Full iPad keyboard navigation, interactive Home Screen widgets, Control Center quick launch, and Action Button App Intents. 100% private, works completely offline, and free of ads, tracking, or subscription paywalls.