Sound Level Meter - Decilog

Measure everyday sound, then keep a clear record of the session. Decilog shows estimated sound levels from your iPhone microphone on a live meter and chart. Check the current reading, average, peak and duration, then stop to see your report. FREE FEATURES • Live measurement and a sound trend graph • Basic reports without watching an advertisement • PDF, JPG and PNG report export through the iOS share sheet • Calibration adjustment for comparison with a reference meter • Optional audio recording with MP3 export, up to five minutes • 50 language and region options; no app account required LIFETIME PRO One Apple in-app purchase removes advertising and unlocks expanded sample analysis, four additional instrument skins, Focus and Timed modes, Hold display, a reference level and keep-screen-awake controls. There is no subscription. Apple's localized price is shown before purchase. Restore Purchases is available in the Pro sheet. An optional rewarded advertisement can grant one hour of Pro on this device. Availability and consent requirements vary by region. If no ad is available, measurement and basic reports still work. PRIVACY AND ACCURACY Microphone analysis runs on your device. Recording is off by default; audio is held in app memory and exported only when you choose. Microphone audio and measurement results are not sent to our servers or the advertising SDK. Google AdMob and its consent SDK may process advertising data as described in the privacy policy. Readings are microphone estimates and vary by device, surroundings and calibration. Decilog is not a certified sound level meter and does not determine hearing safety or provide medical, legal or occupational assessments.