# Calc Engine — Custom graphing calculator > Customizable calculator with graphing, equation solving, and unit conversion for Apple devices. (iPhone/iPad app by VersaEdge Software, LLC.) - Source: https://appshunter.io/ios/app/calc-engine/id1061766849 (this page in markdown: same URL + `.md`) - Developer: [VersaEdge Software, LLC](https://appshunter.io/developer/301294952) - Category: Utilities, Education - Price: Free with in-app purchases - Rating: 5.00/5 from 4 App Store ratings - Age rating: 4+ - Requires: iOS 18 · 17 MB - Languages: British English, Danish, Dutch, French (France), German (Germany), Greek, Indonesian, Italian, Japanese, Korean and 8 more - Released: 2026-05-13 - Data updated: 2026-08-21 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/calc-engine/id1061766849/reviews.md ## What is Calc Engine? Calc Engine™ — The Calculator That Fits How You Work Whether you're splitting a dinner bill, plotting an equation, or working through bitwise logic, Calc Engine meets you where you are. It's a beautiful, fully customizable calculator that grows with you — and syncs seamlessly across iPhone, iPad, Mac, and Apple Watch. Make it look and feel like yours • Choose from rich color themes to match your style • Pick the fonts and key shapes that feel right in your hands • A calculator you actually enjoy opening Design keyboards your way • Build your own keyboard pages — drag any key from a curated library onto a 4×5, 5×5, or 6×5 grid • Mix digits, operators, scientific functions, your own constants — anything you reach for often, all in one place • Set a long-press alternate on any key so a single tile handles a primary and secondary action • Name each keyboard, pick its icon, and reorder it alongside the standard pages — your custom keyboards show up right where you'd expect them • Enable or disable any page (built-in or custom) per device Build your personal math library • Define your own functions with up to three parameters — name them whatever makes sense to you • Save the constants you use all the time and insert them with a single tap • Full calculation history, automatically saved — scroll back anytime Powerful math, always within reach • Trig (radians or degrees), logarithms, exponentials, roots, and more — there when you need them, out of the way when you don't • Live results as you type, so you always know where you're headed • Per-function rounding built in — perfect for money, measurements, or anything that needs a clean output Convert between hundreds of units in seconds • Tap a value, then any two units to see the conversion live — miles to km, lb to kg, °F to °C, gal to L, anything you need • 250+ built-in units across 40+ categories: length, mass, volume, temperature, time, speed, angle, energy, power, pressure, electrical, magnetic, optical, radioactivity, data, and more • Favorite the categories you actually use so they sit at the top — synced across your devices automatically • Build your own functions with conversions baked in — define a formula once and reuse it forever See your equations come to life in graphs • Plot equations like x = y² or sin(x) live as you type, right beside the keyboard • Tap any graph to expand into a full-screen view for closer inspection • A dedicated graphing keyboard with x, y, and = keeps everything in one place — no separate app, no separate mode Solve equations as you type • Type x² = 121 or sin(x) = 0.5 and Calc Engine finds every real answer • Tap the solved answers to reuse it in your next calculation, no separate "solve" mode Programmer mode without leaving the calculator • Type hex (0x), binary (0b), and octal (0o) literals — read and write the way you read code • A full bitwise toolkit: AND, OR, XOR, NOT, shifts, and rotates • Every result shown in HEX, DEC, OCT, and BIN simultaneously, with configurable word size (8/16/32/64) and signed/unsigned interpretation • Tap the binary row to expand into a byte-by-byte view with bit-position labels Private by design • Everything syncs through your personal iCloud — nothing stored on our servers • Fully localized and native on every Apple platform Unlock Calc Engine+ for the full experience — custom themes, fonts, key shapes, custom keyboards, user-defined functions, saved constants, unit conversions, live graphing, equation solving, programmer-mode hex/binary/bitwise, and more. Everything that makes Calc Engine truly yours. Teach it your formulas once. Customize it to feel like home. Use it forever. ## Key features - Customizable keyboard layouts - User-defined functions and constants - Live equation graphing - Equation solving - Extensive unit conversions - Programmer mode (hex, binary, octal) - Cross-device syncing ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Calc Engine+ | $9.99 | one-time | ## Frequently asked questions about Calc Engine ### How customizable is Calc Engine? Calc Engine offers extensive customization. You can design your own keyboard pages by dragging keys, set long-press alternates, name keyboards, and choose icons. You can also define custom functions with up to three parameters and save frequently used constants. ### Can Calc Engine plot equations? Yes, Calc Engine allows you to plot equations like x = y² or sin(x) live as you type, directly beside the keyboard. You can tap any graph to expand it into a full-screen view for closer inspection. ### Does Calc Engine support unit conversions? Absolutely. Calc Engine can convert between hundreds of units across over 40 categories, including length, mass, volume, and temperature. You can favorite categories for quick access, and these settings sync across your devices. ### What programming features does Calc Engine offer? Calc Engine includes a programmer mode that supports hex (0x), binary (0b), and octal (0o) literals. It also provides a full bitwise toolkit including AND, OR, XOR, NOT, shifts, and rotates, with results shown in HEX, DEC, and OCT. ### Does Calc Engine have ads? No, Calc Engine does not contain advertisements. It is a free application with no ads to interrupt your calculations or workflow. ### What devices is Calc Engine available on? Calc Engine is designed to sync seamlessly across iPhone, iPad, Mac, and Apple Watch, providing a consistent experience across your Apple ecosystem. ### How does Calc Engine handle equation solving? You can type equations like x² = 121 or sin(x) = 0.5 directly into Calc Engine, and it will find all real answers. The solved answers can then be tapped to reuse in your next calculation without needing a separate solve mode. ### What is the update frequency for Calc Engine? Calc Engine was last updated on May 14, 2026, with version 1.0.1. While specific update frequency isn't detailed, this indicates active development and support. ## Version history (last 2 releases) ### 1.0.1 — 2026-05-14 Bug fixes ### 1.0 — 2026-05-14 No release notes. ## Apps similar to Calc Engine | App | Rating | Price | Category | | --- | --- | --- | --- | | [Megatuner Plus](https://appshunter.io/ios/app/megatuner-plus/id1665781784) | — | Free | Utilities | | [Touchless Countdown](https://appshunter.io/ios/app/touchless-countdown/id6504541049) | — | Free | Utilities | | [DataPocket](https://appshunter.io/ios/app/datapocket/id6618158585) | — | Free | Utilities | | [RedCrab Calculator](https://appshunter.io/ios/app/redcrab-calculator/id947845140) | — | Free | Utilities | | [STRUCT Construction Calculator](https://appshunter.io/ios/app/struct-construction-calculator/id6758335610) | — | Free | Utilities | | [Hammer Construction Calculator](https://appshunter.io/ios/app/hammer-construction-calculator/id6747408084) | — | Free | Utilities | ## More apps by VersaEdge Software, LLC - [Area Codes](https://appshunter.io/ios/app/area-codes/id302877550) - [Airport Codes](https://appshunter.io/ios/app/airport-codes/id308579423) - [Zip Codes](https://appshunter.io/ios/app/zip-codes/id311107765) - [Wait Times for Disney World](https://appshunter.io/ios/app/wait-times-for-disney-world/id321601474) - [Wait Times for Disneyland](https://appshunter.io/ios/app/wait-times-for-disneyland/id329686864) - [Magic Guide for Disney World](https://appshunter.io/ios/app/magic-guide-for-disney-world/id365817457) All apps by VersaEdge Software, LLC: https://appshunter.io/developer/301294952 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*