Quietmarks 2.0 — a pro upgrade that turns samples into a credible case file, still 100% offline. • Structured incident log: category, source, room, impact, witnesses, and whether police were called. • Recurrence engine: a weekday × hour heatmap and a 0–100 credibility score that turns scattered events into "noise typically Fri–Sat, 11 PM–1 AM." • Quiet-hours flagging (with correct past-midnight math) and disturbance-minute analytics. • A calibration offset so you can match a reference and improve your readings — always shown honestly as an approximation. • Upgraded evidence-package PDF with a Pattern Analysis & Methodology page, plus a complaint-letter generator that includes the recurrence summary. A documentation tool, not a calibrated sound meter. No account, no cloud — everything stays on your device.

Version 1.2 adds three substantive improvements: Formal Complaint Letter Generator - The Share tab now includes a "Generate Complaint Letter" button that produces a ready-to-send formal noise complaint letter from your logged entries. The letter is structured the way housing attorneys recommend: date header, opening paragraph, a factual summary table (total events, 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 of up to 15 entries, and formal demands. You can preview the full letter in-app, copy it to clipboard in one tap, or share it as a plain-text file via Mail, Messages, or any share extension. Pair it with the PDF evidence log for maximum effect. Expanded Noise Ordinance Database - 20 jurisdictions - The offline ordinance reference now covers 20 jurisdictions, up from 11. New additions: Houston TX (65 dBA day / 58 dBA night), Miami FL (60/55 dBA, quiet hours 11 PM), Philadelphia PA (65/55 dBA, quiet hours 9 PM), Minneapolis MN (65/55 dBA L10 limits), Nashville TN (60/50 dBA), Atlanta GA (60/50 dBA), Las Vegas NV (60/50 dBA), San Diego CA (55/50 dBA), and Phoenix AZ (65/55 dBA). Sources cited for each profile; all clearly labelled as reference only. Entry Search - The Entries tab now has a search bar. Type any word from a headline, your notes, or a dB value to filter your log instantly. Useful when you have a long history and need to find a specific event quickly.

Version 1.1 adds four substantive improvements: CSV Export — Share your noise log as a spreadsheet-compatible CSV from the Share tab. Every column a lawyer or property manager needs: peak dB, avg dB, duration, notes, photo flag, and timestamp in ISO 8601. Opens in Numbers, Excel, or Google Sheets. Statistics View — Tap the chart icon on the Entries tab for a real analytics panel: total events, events per active day, longest consecutive streak, overall peak and energy-averaged dB, level distribution (how many events hit 70 dB and 85 dB), an hour-of-day sparkline, and a day-of-week breakdown. Noise Ordinance Reference — An offline database of noise ordinance limits for 11 jurisdictions (NYC, Los Angeles, Chicago, Boston, Seattle, San Francisco, Portland, Denver, plus WHO guidelines and the US EPA reference). Choose your city in Settings; each entry's detail view then shows a badge — comfortably below, near, or above the applicable limit for that time of day. Sources cited throughout; clearly labelled as reference only. Live Ordinance Context on Entry Details — With a jurisdiction selected, every entry detail view shows the applicable daytime or quiet-hours limit for that timestamp and whether the peak reading exceeded it.