NoiseLedger: dB Meter Log
lapnito.cz s.r.o. · Utilities
Independent analytics for this App Store listing. AppTracker is not affiliated with lapnito.cz s.r.o.
Chart standing · US
What changed · US
Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.
NoiseLedger 2.0 is our biggest update yet — and everything is still free, with no ads. NEW: Noise dosimeter with NIOSH and OSHA standards, live dose %, TWA and time-to-limit projection. NEW: Percentiles L10/L50/L90/L95, time above threshold and dB histogram. NEW: Spectrogram waterfall and 31 third-octave bands with peak hold. NEW: Multi-page PDF report with a threshold-exceedance table — ideal for documenting a noise problem. NEW: Overnight recording with adaptive sampling, auto-stop timer and a quiet night preset. NEW: Trends dashboard with daily Leq, streaks and your loudest day and hour. NEW: Calibration wizard and offset profiles for ~30 iPhone models. NEW: iOS measurement mode disables audio processing so readings are not altered. NEW: History search, date and dB range filters, multi-select export and bulk delete. NEW: Share your settings as a QR preset. NEW: 43 languages. Thank you for measuring with NoiseLedger.
Ratings breakdown · US
The star breakdown behind this app's rating in this storefront.
Screenshots
About
NoiseLedger is a privacy-first decibel meter and noise log for iPhone. Measure sound levels in real time, run overnight recordings, and export professional reports — with no ads, no account, no subscription, and no cloud. MEASURE WITH CONFIDENCE • Real-time dB with FAST/SLOW response, MIN / Leq / MAX • A, C and Z frequency weighting • iOS measurement mode: audio processing is switched off so readings are not altered • Calibration wizard plus built-in offset profiles for ~30 iPhone models • Honest clipping detection warns you when the mic reaches its limit PRO METRICS, COMPLETELY FREE • Noise dosimeter to NIOSH (85 dB, 3 dB) and OSHA (90 dB, 5 dB) standards • Live dose %, TWA and time-to-limit projection • Percentiles L10 / L50 / L90 / L95 • Time above threshold and a full dB histogram SEE THE SOUND • FFT spectrum with peak frequency readout • Scrolling spectrogram (waterfall) • 31 third-octave bands with peak hold DOCUMENT AND PROVE IT • Multi-page PDF report: chart, statistics, percentiles, dose and a threshold-exceedance table with start, end, duration and max • CSV and PNG export • Overnight and long-session recording with adaptive sampling, auto-stop timer and a quiet night preset • Session history with search, date and dB filters, tags, notes and markers • Trends dashboard: daily Leq, streaks, loudest day and hour PRIVACY BY DESIGN Audio is analysed live and never recorded or stored. No accounts, no analytics, no trackers, no cloud. Everything stays on your iPhone. You can erase all data at any time from Settings. ACCURACY NOTE NoiseLedger uses the built-in iPhone microphone, so readings are approximate and vary by device. It is a helpful indicator, not a certified instrument. For legal, workplace-compliance or safety-critical measurements, use a calibrated Class 1 or Class 2 sound level meter.
What's new · 2.0
NoiseLedger 2.0 is our biggest update yet — and everything is still free, with no ads. NEW: Noise dosimeter with NIOSH and OSHA standards, live dose %, TWA and time-to-limit projection. NEW: Percentiles L10/L50/L90/L95, time above threshold and dB histogram. NEW: Spectrogram waterfall and 31 third-octave bands with peak hold. NEW: Multi-page PDF report with a threshold-exceedance table — ideal for documenting a noise problem. NEW: Overnight recording with adaptive sampling, auto-stop timer and a quiet night preset. NEW: Trends dashboard with daily Leq, streaks and your loudest day and hour. NEW: Calibration wizard and offset profiles for ~30 iPhone models. NEW: iOS measurement mode disables audio processing so readings are not altered. NEW: History search, date and dB range filters, multi-select export and bulk delete. NEW: Share your settings as a QR preset. NEW: 43 languages. Thank you for measuring with NoiseLedger.
Details