222+ iOS apps curated and reviewed
The best decimal reader apps on iPhone average 4.6★ across 222+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
Monitor your surroundings with this decibel meter app. It measures sound levels in real-time, providing clear visual analysis and advanced filtering options. Easily share your readings for documentation or further analysis.
This app transforms your device into a professional sound level meter, precisely measuring ambient noise pressure. It offers advanced features like frequency analysis, historical data management, and dosimeter functions, making it useful for various applications and entertainment.
This free app measures sound levels and noise exposure using your smartphone. Developed by acoustics experts, it provides professional-grade metrics and guidance on hearing protection and noise prevention.
This application measures and displays environmental noise levels in decibels. It offers various visual representations of the data, including gauges, graphs, and numerical readouts. Users can also save their measurement history.
Transform your device into a professional sound level meter and audio analyzer. Measure ambient noise, monitor decibel levels, and visualize sound frequencies in real time. It also offers advanced sleep tracking with sound recognition to identify disruptions.
Measure, record, and analyze sound levels in your environment. This app offers precision metering, noise elimination tools, hearing protection features, and home audio calibration. It provides detailed reports and can be used with device microphones or external ones.
Measure sound volume in real-time with this app. It provides precise decibel readings, a visual timeline of sound fluctuations, and customizable calibration for accurate results. Ideal for monitoring noise levels in various environments.
Transform your device into a professional sound analysis tool. Measure real-time noise levels, analyze frequencies, and generate various sound waves for audio testing and instrument tuning. Save and share your acoustic reports.
Easily convert numbers between Binary, Decimal, Hexadecimal, and Octal formats. This educational tool is designed for quick and accurate number system conversions.
Measure ambient noise levels and sound exposure duration in real-time. This app displays acoustic intensity in decibels with detailed visual reports and supports photo/video overlays with noise data. Protect your health from noise pollution.
Instantly identify currency denominations using your device's camera with augmented reality. This app provides real-time recognition, offline functionality, and voice output, aiding users with visual impairments and simplifying everyday financial tasks.
This app offers a highly customizable ebook reading experience, supporting a wide range of formats. It allows users to adjust fonts, paper types, and indents for a personalized feel, akin to reading a physical book. Features include note-taking, cloud synchronization, and organized libraries.
This app is a versatile e-book reader that supports a wide range of formats including EPUB, MOBI, and PDF. It offers extensive customization for reading modes, cloud storage integration, and text-to-speech capabilities for audiobooks.
This application serves as a versatile calculator designed for programmers. It supports conversions and calculations across binary, decimal, and hexadecimal number systems.
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 focused reading experience for TXT files, allowing users to scroll continuously without page turns. It's designed for those who prefer local storage and a distraction-free environment for their digital library.
This comprehensive calculator app offers a wide range of functionalities for everyday and complex calculations. It features multiple calculator views, a unit converter, and a detailed history log. Designed for ease of use and accessibility, it supports multitasking and various input methods.
Quickly and privately scan barcodes and QR codes. Search the web for more information, share results, or save them to your secure iCloud. Auto-copy functionality is also available.
This app consolidates all your reading content, including web articles, newsletters, and PDFs, into a single, organized platform. It offers advanced highlighting, text-to-speech, and AI-powered assistance to enhance your reading workflow and knowledge retention.
This application provides a seamless reading experience for EPUB files, supporting all formatting features. It offers advanced customization options for text, page turning, and display, along with cloud integration and file management tools. Enjoy your favorite books with enhanced productivity and comfort on mobile devices.