Hushlog: Noise Log & dB Meter

Tired of screenshotting a decibel meter at 2 AM? Hushlog is a noise log that keeps measuring while you sleep and saves every moment your neighbors go over the limit.

Put your phone on the floor, tap Start measuring, and turn the screen off. Hushlog runs as a noise meter in the background and writes an event only when the sound passes your limit. No hour-long recording that suddenly stops and goes unsaved.

WHAT GETS SAVED
• Time, duration, max dB (Lmax), average (Leq), L10 / L90 for every event
• Day and night tags, with separate limits (39 dB day, 34 dB night by default)
• Optional short, low-quality clips of over-limit moments, stored only on this device
• A tag for what it was: footsteps, furniture dragging, music, voices, construction
• Your own note, like "heavy steps from upstairs again"

SEE THE PATTERN
• Log with Day, Night and Over-limit filters
• Weekday x hour heatmap: find out that the upstairs neighbor noise always starts at 11 PM
• By-hour chart with night hours shaded
• 7 days, 30 days or all time

EVIDENCE YOU CAN HAND OVER
• PDF report with date and time stamps for the building manager or a noise complaint
• CSV export for your own spreadsheet
• Share a single record in one tap
• No subscription wall on reports, export or calibration

SET IT UP ONCE
• Mic calibration offset to match a sound level meter
• Scheduled measuring every night 22:00-06:00
• Only while charging, so the battery is not drained
• Keep records for 30, 90, 365 days or forever
• Light and dark theme, home screen widget to start or stop the decibel meter

PRIVATE BY DESIGN
No account. No server. Your noise recorder data stays on your phone until you share it.

Phone measurements are for reference only and are not certified noise measurements.

Recent changes:
First release: automatic noise log, event details with tags and notes, heatmap stats, PDF and CSV reports.