Quietmark app icon
iPhone and iPad App · v1.2

Quietmark

The noise complaint log built for tenants. Capture peak and average dB, write your notes, attach a photo, and export a timestamped evidence log — as a PDF, a CSV spreadsheet, or a ready-to-send formal complaint letter.

Capture a Noise Event

Tap the big button when you hear a problem. Quietmark opens the microphone for 3, 5, 10, or 30 seconds — your choice — and samples the audio meter at 10 Hz to compute peak and average dB (a dB SPL approximation). Nothing is recorded to disk, nothing leaves your device.

Log the Details

After the capture, add a one-line headline and multi-line notes: who, what, when, how long it lasted. Optionally attach a photo from your library — useful for documenting the noise source. All entries live in a reverse-chronological list grouped by day, now with full-text search so you can find any event instantly.

Complaint Letter Generator — New in 1.2

The Share tab now generates a ready-to-send formal complaint letter from your logged entries. It is structured the way housing attorneys recommend: date header, a factual event summary (total count, peak and energy-averaged dB, consecutive-day streak, busiest hour), an ordinance context section when you have a jurisdiction selected, an impact statement citing WHO noise health guidelines, a detailed incident log, and formal demands. Preview in-app, copy to clipboard in one tap, or share as a plain-text file via Mail, Messages, or any share extension. Pair it with the PDF evidence log for maximum effect.

Expanded Ordinance Database — New in 1.2

The offline noise ordinance reference now covers 20 jurisdictions, up from 11. New additions: Houston TX, Miami FL, Philadelphia PA, Minneapolis MN, Nashville TN, Atlanta GA, Las Vegas NV, San Diego CA, and Phoenix AZ. Sources cited for each profile; all clearly labelled as reference only and verified against publicly available ordinance text.

Export a PDF Evidence Log

Generate a Letter-size "Noise Evidence Log" PDF with your name, rental address, landlord email, and the date range. Every entry is a row with peak/avg dB pills, your notes, and optional photo thumbnail. A calibration disclaimer on page one is clear about what the numbers represent.

Export to CSV

Share your entire log as a spreadsheet-compatible CSV — peak dB, avg dB, notes, photo flag, and every column a lawyer or property manager needs to sort and filter. Opens in Numbers, Excel, or any spreadsheet app. RFC 4180-compliant so fields with commas, quotes, or newlines are handled correctly.

Statistics View

Tap the chart icon on the Entries tab to see real analytics over your log: total events, events per active day, longest streak of consecutive noise days, overall peak and energy-averaged dB, level distribution bars (how many events hit 70 dB or 85 dB), an hour-of-day sparkline, and a day-of-week breakdown. Useful for showing patterns in a complaint letter.

Noise Ordinance Reference

An offline reference database of noise ordinance limits for 20 jurisdictions — NYC, Los Angeles, Chicago, Boston, Seattle, San Francisco, Portland, Denver, Houston, Miami, Philadelphia, Minneapolis, Nashville, Atlanta, Las Vegas, San Diego, Phoenix, plus WHO guidelines and the US EPA reference. With a jurisdiction selected, each entry's detail view shows whether the peak reading was inside or outside the applicable limit for that time of day.

What the Numbers Mean

Quietmark uses AVAudioRecorder's standard metering APIs and a +96 dB calibration offset to produce a dB SPL approximation. This is not a calibrated Sound Level Meter. The numbers are useful relative evidence: "the event at 2 AM measured 78 dB peak, consistent with my note that it woke me." They are not suitable for enforcing an ordinance that requires a certified measurement.

A full calibration disclaimer is shown on every PDF page, on the Capture screen, and in Settings. The ordinance context badges and the complaint letter's dB references are all clearly labelled as approximations.

Fully Offline. No Account. No Tracking.