210+ iOS apps curated and reviewed
Finding the right timer 555 calculator pro app can be overwhelming with so many options. We've analyzed 210+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
Calculate parameters for monostable and astable circuits. Find component combinations for desired pulse width or frequency. Share circuit files via iCloud Drive or AirDrop.
This app offers a calculator with an editable, line-by-line tape history, combining spreadsheet-like functionality with calculator simplicity. Easily correct mistakes, add comments, and share or print your calculations.
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.
This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.
This app offers a customizable and fast calculator experience with a wide variety of themes. It includes scientific and standard modes, real-time results, and calculation history. Personalize your math with over 60 cute and colorful themes, including animated options.
This app offers a clean and intuitive interface for both basic arithmetic and advanced scientific calculations. It includes a history tape to review past computations and supports various mathematical operations, making it suitable for everyday use and complex problem-solving.
Calculate monostable and astable circuits for electronics projects. Determine pulse width and frequency, find component combinations, and save/upload data. Supports multiple languages.
An app designed to streamline work hours calculations, helping users track their time with precision. Simplify your scheduling and stay organized effortlessly with Time Calculator⁺.
This app provides a straightforward calculator experience with a comprehensive history log of all your computations. Customize the keyboard, display, and history records to suit your needs. Easily add annotations and titles to past calculations for better organization.
This app offers a versatile calculator with three distinct modes: Basic, Scientific, and Programmer. It provides a history view, sharing capabilities, and supports various input and output formats. The app is designed for iPhone, iPad, and iPod Touch.
This app offers a versatile calculator experience with both standard and scientific modes. Customize its appearance, use it in any orientation, and access additional tools like a notes tab and calculation history. It's designed for students and professionals needing accurate calculations.
Easily calculate the difference between two times or add/subtract durations. This utility app helps manage time calculations for various purposes.
This app offers a comprehensive suite of over 40 calculators and unit converters for various needs, including finance, health, construction, and everyday math. It features standard, scientific, and specialized calculators for tasks like loan amortization, currency conversion, and material estimation.
This free scientific calculator offers essential features like RPN mode, unit conversions, and multiple undo/redo. It provides a taste of a more powerful version, with optional in-app purchases for expanded functionality.
This versatile timer app offers a simple yet powerful way to manage timed activities. Customize multiple intervals with individual colors and sounds, and save them as presets for quick access. It's designed for ease of use and visibility, even from a distance, and works seamlessly in the background.
This app offers a visually engaging and intuitive timer experience, inspired by simple egg timers. It features a unique overshoot function, a game-like interface with 3D animations, and customizable skins. Widgets provide quick access to timers for daily routines.
This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.
Manage multiple timers and stopwatches simultaneously for various activities like cooking, workouts, and daily routines. Build complex interval timers with custom segments and receive voice announcements. Save and reuse timer templates for efficient time management.
This app provides a simple and effective way to set up recurring reminders for various tasks and routines. It features customizable timers, optional interval cycles, and background operation with visual and audio notifications.
Easily calculate the difference between dates, add or subtract days, and create custom countdowns. Personalize your workweek and skip specific dates for accurate workday calculations. Track events with home screen widgets and receive timely notifications.