SPLnFFT Noise Meter is an advanced sound level meter app designed for iPhone and iPad users, offering a range of features for both casual and professional use. The app includes a frequency analyzer, noise dosimeter, and test signal generator, making it a versatile tool for measuring sound levels accurately. It is compliant with ANSI S1.42 standards and has gained recognition as a recommended app by health and safety organizations. The user interface is intuitive, displaying sound exposure levels clearly, ensuring that users can easily interpret the data.

For professional users, SPLnFFT provides detailed measurements such as Leq, peak, L10, and L95, complemented by real-time FFT analysis. The app allows for calibration to enhance precision and supports various display modes for sound measurements. Users can also generate test tones and export FFT analysis as images. Overall, SPLnFFT combines functionality and ease of use, making it a valuable asset for anyone needing to monitor sound levels.