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.
Track environmental noise levels with an easy-to-use decibel meter app that provides detailed analysis through dB and AF readings. Share readings, utilize polling, and explore various features for sound monitoring. Contact info@ashiers.com for more information.
Transform your iOS device into a professional sound level meter with pre-calibrated accuracy and various frequency spectrum analysis tools. Measure sound pressure levels, export data to Health app, and enjoy features like FFT graphs, dosimeter readings, and InstaDecibel for social sharing. Experience the convenience of tracking noise levels with precision and ease.
This award-winning app, developed by acoustics engineers and hearing loss experts, offers a simple and free solution for measuring sound levels accurately. It provides essential metrics, calibration options, educational resources, and expert support, making it a comprehensive tool for monitoring noise exposure and protecting hearing. Click the link to access the app: [NIOSH Sound Level Meter](https:/www.cdc.gov/niosh/topics/noise/app.html).
What We Love
🚀 Free and ad-free
👍 Simple and intuitive interface
⚖️ Accurate and reliable measurements
💡 Useful for monitoring noise levels in various environments
Room to Improve
🐛 Occasional bugs and crashes
🔌 Issues with external microphone support
🔋 Can drain battery when running for extended periods