153+ iOS apps curated and reviewed
The best armchair engineering apps on iPhone average 4.5★ across 153+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
Transform temperatures effortlessly between Celsius, Fahrenheit, and Kelvin with this intuitive application. Experience seamless conversions and precise results with just a few taps. Try it now for quick and accurate temperature calculations!
This educational tool and calculator makes solving and learning fractions easy by accurately solving equations and providing detailed working. It allows users to work with mixed and partial fractions, convert between decimal and fractional values, and find factors, with some features available through a simple in-app purchase.
Access hundreds of special characters easily with this app. Simply tap to copy, then paste into any application to enhance your texts. Customize your messages, emails, and documents effortlessly.
Get instant access to commodity market updates with Quick Commodities! Stay informed on price changes and historical data for 15 common commodities. Customize your interface, set widgets, and enjoy a seamless experience. Subscribe now for convenient monthly updates.
Find unknown angles and sides of triangles with Trig Help, a simple triangle calculator. Quickly solve trigonometry problems with ease.
Convert Mexican Pesos to US Dollars effortlessly with the latest exchange rates and customizable decimal precision. Experience a seamless currency conversion process today!
Create custom bordered wallpapers for your iPhone with ease using this tool. Choose from various border styles and colors to make your device stand out. Customization made simple in just four steps - import a photo, set borders, export to the library, and apply as your wallpaper.
Get fast and easy triangle calculations with our simple Trigonometry Help app. Solve for unknown angles quickly with our Triangle Solver and Trig Calculator. Try it now for quick solutions!
This staircase calculator helps you easily compute staircase riser, going, stringer, and base lengths when building. With its user-friendly features, you can accurately solve staircase equations, customize units and precision, and adjust settings to suit your needs.
This application helps users calculate rafter length and associated values for building, allowing them to quickly find roof pitch, rafter lengths, and ridge height for gable roofs. With various input options and features, users can accurately solve rafter equations and get precise results, try it out to make your building calculations easier.
This floor area calculator helps you easily find the floor area of your house by adding or deleting rooms as needed. Simply set your preferred input and output units, choose the number of decimal places, and start calculating your floor area today!
This application allows users to easily track current gold prices, with features to customize display currency and measurement units, view historical price data in a graphical format, and monitor daily changes. Try it now to stay on top of gold price fluctuations with a personalized experience.
This simple and straightforward application helps students manage their school or college timetable by allowing them to easily enter and access their class schedule. With features like a seven-day week, task list, lock screen widget, and seamless data sync, it becomes a convenient guide for staying organized and on top of studies.
Convert British pounds to U.S. dollars quickly and easily with this currency converter, using the latest conversion rate information and allowing you to select your preferred number of decimal places. Try it now to make accurate conversions between GBP and USD.
This electric circuit calculator simplifies Ohm's Law calculations, allowing users to find unknown variables by entering two known values and selecting preferred units. With the ability to calculate effective resistance and power, it's a must-have tool for anyone working with electronics.
This unit converter app allows users to quickly convert values across various categories, including area, currency, length, and more, using the latest conversion data. Download it now to easily convert units and make calculations simple.
This application allows users to quickly and easily convert temperatures between Celsius, Fahrenheit, and Kelvin. Try it out to make temperature conversions a breeze!
This system and processor profiler helps you easily find technical details of your device, including CPU name, model, and manufacturer. Get instant access to your device's processor information with this handy tool.
This application helps users calculate flow rate, pipe diameter, or velocity of a liquid with ease and accuracy. It allows customization of units and decimal places, making it a convenient tool for solving flow rate equations - try it out today!
This weight converter allows users to quickly and easily convert between pounds and kilograms. With a simple interface, users can select their preferred number of decimal places and perform conversions with ease, try it now!