249+ iOS apps curated and reviewed
iSlipstick is the household name in islipstick, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (3) | No | No | May 2026 |
| 2 |  | Free was $1.99 | 4.7★ (3) | No | No | May 2026 |
| 3 |  | Free | 4.9★ (243K) | Yes | No | Aug 2026 |
| 4 |  | Free | 4.7★ (60K) | No | No | Aug 2026 |
| 5 |  | Free | 4.9★ (404K) | Yes | No | Aug 2026 |
| 6 |  | Free | 4.7★ (15K) | Yes | Yes | Aug 2026 |
| 7 |  | Free | 4.7★ (330) | No | Yes | Jul 2026 |
| 8 |  | Free | 4.2★ (1.4K) | No | No | Jul 2026 |
This app provides a suite of essential electronic formula calculators and unit converters. It simplifies complex calculations for Ohm's law, LC circuits, impedance, and more, with a user-friendly interface for quick input and reordering of frequently used tools.
This app provides a comprehensive suite of calculators and converters specifically designed for radio frequency (RF) engineers and technicians. It includes tools for path loss, antenna gain, intermodulation, and standard electrical calculations, along with various unit conversions.
Perform essential arithmetic operations with a straightforward calculator app. Its large buttons and clear display ensure ease of use, supporting both portrait and landscape orientations.
This app offers both basic and scientific calculation modes with over 30 scientific operations. It allows for customization of the app's appearance and includes features for note-taking, drawing, and viewing calculation history. It supports high accuracy calculations and nested parentheses.
This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.
A straightforward and intuitive calculator app designed for ease of use. It offers a history bar, customizable themes, and advanced mathematical functions, ensuring a pleasant and efficient calculation experience on your device.
This app offers a fully functional scientific calculator and a notepad with automatic note-taking capabilities. Save your calculations and add custom content to notes for easy future reference. It supports multitasking features on iPad and offers optional upgrades for advanced functionality.
A straightforward and reliable calculator application designed for iPad and iOS 9. It offers a standard calculation experience with a charming piano sound effect and is optimized for high-resolution screens.
This app offers both basic and scientific calculators for quick solutions to mathematical expressions. It also features a "Math Notes" function that allows users to type or write out equations and see them solved inline, with support for variables and graphing.
A free, ad-free calculator designed for ease of use on iPhone, iPad, and Mac. Features large keys suitable for all ages and multitasking compatibility for iPad users.
Design impressive spreadsheets with a flexible canvas, interactive charts, and powerful functions. Collaborate with others and access your work across devices. Includes tools for data analysis and text composition.
This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.
A free, redesigned calculator app offering a simpler, more intuitive experience across Apple devices. Features include customizable themes, advanced scientific functions, and unit conversion, all optimized for various screen sizes and interactions.
This app offers both basic and advanced scientific calculations with an intuitive interface designed for tablets and phones. It includes features like currency conversion, calculation history, and the ability to share results. An optional premium membership removes ads and provides enhanced support.
A scientific calculator designed to enhance productivity with features like real-time results, unit conversion, and custom buttons. It offers a date calculator, customizable appearance, and is optimized for iPad.
This app offers both standard and scientific calculator functions for your iPad or iPhone. It's designed for simplicity and ease of use, catering to both basic calculations and more complex mathematical needs.
A visually appealing and straightforward calculator app for iPhone and iPad. It offers a unique user interface with support for basic and scientific calculations, various number base conversions, and currency and unit conversions.
This app simplifies math with basic, scientific, and fraction calculations. It also features a unique snap-and-scribble function to solve problems from photos. Customize your experience with themes and access a calculation history.
This app combines five essential calculation tools into one convenient package. It offers standard, scientific, unit conversion, loan, and tip calculators with a user-friendly interface and large buttons. Available on multiple Apple devices, it streamlines everyday calculations.
This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.