247+ iOS apps & games curated and reviewed
Whether you're new to 555 calc or looking for an upgrade, our curated collection of 247+ iOS apps and games has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.0★ (3) | Yes | No | May 2026 |
| 2 |  | Free | 3.9★ (8) | No | Yes | Aug 2026 |
| 3 |  | Free | — | Yes | No | Aug 2026 |
| 4 |  | Free | 3.9★ (28) | No | Yes | Aug 2026 |
| 5 |  | Free was $5.99 | 4.8★ (2.4K) | No | Yes | Aug 2026 |
| 6 |  | Free | 4.4★ (96) | No | No | Aug 2026 |
| 7 |  | Free | 4.6★ (1.9K) | Yes | Yes | Aug 2026 |
| 8 |  | Free | 4.7★ (19) | No | No | May 2026 |
This utility app helps engineers and hobbyists calculate resistor values for circuits using the Timer IC 555. Simply input frequency, duty ratio, and capacitor values to get the required resistor outputs.
Calculate monostable and astable circuits for electronics projects. Determine pulse width and frequency, find component combinations, and save/upload data. Supports multiple languages.
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 offers a versatile calculator experience with basic, scientific, and advanced modes. It features real-time results, unit conversions, custom functions, and a shareable history. Optimized for various Apple devices, it's designed for ease of use by students, professionals, and scientists.
This app provides a free, intuitive graphing calculator experience on your iPhone or iPad. It's designed to make learning math easier with features for solving equations, graphing functions, and computing statistics. The app is frequently updated with new features and is programmable in Python.
Securely hide your personal photos, videos, notes, and contacts behind a disguised calculator interface. Protect your privacy with advanced features like intruder alerts and secure cloud backup.
Order a taxi quickly and easily with this modern Hungarian taxi booking app. Set your current location or pinpoint a pickup spot on the map. Schedule rides for a later time.
This application serves as a versatile calculator designed for programmers. It supports conversions and calculations across binary, decimal, and hexadecimal number systems.
Explore the world of Kamen Rider Faiz with detailed character and gear information. Engage in fun quiz games to test your knowledge of the Faiz universe. Enjoy a unique experience on your Apple Watch.
A free, classic calculator app with large, easy-to-press buttons and customizable skins. It supports basic arithmetic, memory functions, and can handle very large numbers without using scientific notation. Multitasking is also supported on compatible devices.
A powerful calculator designed for professionals and students, offering advanced features like RPN mode, multi-line display, and extensive unit conversions. It supports various number systems and includes an Apple Watch app for on-the-go calculations.
This app provides union members with essential information on benefits, contracts, and union activities. Stay updated on industry news, political actions, and upcoming events relevant to your membership.
This calculator app offers essential functions plus advanced features like sales tax and discount calculations. Easily reuse past answers, edit expressions with cursor keys, and customize themes and fonts. Share your calculations with others.
This logic puzzle game challenges you to place numbers on a grid so they add up to 5, clearing the board to win. It's designed to train your logic and concentration skills while providing an enjoyable pastime.
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 brings the functionality of Casio's ClassWiz scientific calculators to your smartphone or tablet. Perform advanced calculations, manage spreadsheets, and generate graphs by connecting to Casio's online services. It mirrors the operation of physical calculators and uses QR codes for seamless integration.
Calculate parameters for monostable and astable circuits. Find component combinations for desired pulse width or frequency. Share circuit files via iCloud Drive or AirDrop.