HowLoud – Decibel Meter for iPhone

Sound Level · dB · Noise Check

HowLoud is a clean, fast, and practical decibel meter designed for everyday real-world use. It helps you understand how loud your surroundings are in just a few seconds, whether you are at home, at work, outdoors, during renovations, in shared buildings, near traffic, around appliances, or at events. The app is built for people who want a simple way to measure noise, keep useful records, and export professional-looking reports when needed.

With HowLoud, you can view live A-weighted sound level readings in real time and save measurement sessions for later review. This makes it useful not only for quick checks, but also for repeated comparisons over time. You can use it to monitor changing noise conditions, compare different rooms or environments, document recurring disturbances, or keep a personal record of sound exposure in daily life.

The app includes essential sound measurement statistics such as minimum, maximum, average, and Leq values, helping you get a clearer picture than a single live number alone. Saved sessions can include notes, timestamps, and optional location details, making them easier to understand and organize later. When you need something more formal, HowLoud can generate clear A4 PDF reports with stats, charts, and map information that are suitable for sharing, storing, or referencing later.

HowLoud is especially useful if you want to:

• check how loud a place feels in real time

• compare sound levels between rooms, devices, or locations

• keep records of repeated noise problems

• save sessions with time, notes, and key stats

• export a polished PDF report for documentation

Key features include:

• live sound level meter

• A-weighted measurements

• minimum, maximum, average, and Leq statistics

• session history stored on device

• measurement notes

• optional location in saved reports

• A4 PDF export with chart, stats, and map

• one-time Premium unlock

• no account required

The Premium unlock adds PDF report export and extended history for up to 90 days.

HowLoud is designed to work without registration. Core features do not require an account, and saved measurements are stored locally on your device for everyday personal use.

Important: HowLoud is intended for personal measurement, awareness, and documentation. It is not a certified Class 1 or Class 2 sound level meter and should not be used where legally certified measurements are required.