Decibels vs SoundMeter

Decibels is a sound level meter that remembers what you measured. Point it at the noise, press start, press stop — and the reading stays. Average (Leq), maximum, minimum, duration and the full level trace, saved automatically, every time. No account, no subscription, and nothing leaves your phone unless you send it. MEASURE • A-weighted (dBA) or unweighted, per IEC 61672 • Fast (125 ms) and Slow (1 s) time weighting • LCpeak for impulses — alarms, slams, machinery • Live level trace with a ten-second window • Calibration offset for matching a reference meter KEEP • Every measurement saved automatically • History with the full trace of each run • CSV export carrying the settings it was taken under Decibels stores your measurements on your device and nowhere else. It records no audio — only the level — and asks for no location, no account and no identifiers. A note on accuracy: a phone microphone is not a calibrated instrument. Decibels is honest about that. Use the calibration offset against a reference meter for absolute readings, and treat it as an excellent relative instrument otherwise.

"Isn't this too loud?" "What's the decibel level?" — hold up your phone and see instantly. SoundMeter uses your iPhone's microphone to measure ambient sound in real time. Beyond raw dB numbers, it labels every reading in plain English — "quiet library", "busy street" — so you understand at a glance. From noise dispute evidence to sharing concert loudness, one app covers it all. --- Key Features --- ■ Real-Time dB Meter A half-circle arc meter shows the current volume at a glance. Updated every 100ms with smooth animation, plus MIN / AVG / MAX statistics to track changes over time. ■ Plain-English Sound Labels 30 dB "Quiet Library", 60 dB "Normal Conversation", 90 dB "Very Loud" — 11 levels of intuitive labels help you feel the volume beyond the numbers. ■ Session Recording Tap "Start Recording" to save a session. Automatically logs 1-second dB samples, start/end times, and optional location tags. Perfect for documenting noise disputes. ■ Time-Series Charts Swift Charts area graphs visualize your entire session. Color bands in the background instantly show quiet zones vs. warning zones. ■ CSV / PDF Export Export session data as CSV or PDF. Ideal for attaching to complaint filings, emails to landlords, or property manager reports. ■ Noise Alert Notifications Set a threshold (30–120 dB) and get notified when exceeded. Choose "every time / every minute / every 5 minutes" — perfect for baby sleep monitoring, construction watch, or concert level checks. ■ Mic Calibration Offset Manually adjust for your iPhone's mic sensitivity (±7 dB between models). Compare against a professional calibrated meter for higher accuracy. ■ Location Tags Add location tags like "Downtown Apartment" to each session. Great for scouting apartments or comparing multiple locations. ■ Share Cards Turn your current dB reading into a shareable card for X or Instagram. "Front row: 105 dB" — bring the experience to your feed. ■ Widget Support Home Screen widgets show your last measured dB and label. Lock Screen widgets supported too. ■ iCloud Sync Session records sync automatically via iCloud. Switch devices without losing history. --- Perfect For --- ・Documenting noise complaints from neighbors ・Scouting apartments for ambient noise levels ・Checking a bedroom's quietness for a sleeping child ・Measuring sound leakage during music practice ・Sharing concert or festival loudness on social media ・Recording construction noise for property management ・Verifying quiet cafés for focused work --- Privacy First --- Your audio is never recorded or stored. Only dB values are captured — kept on your device and iCloud. No external transmission ever. --- Minimal Design --- Sage green aesthetic — calm, beautiful, grown-up. Not a garish tool, but a meter you're happy to keep on your Home Screen. Full light and dark mode support. --- More --- ・Full dark mode ・16 languages supported ・iCloud sync ・Remove Ads IAP (one-time purchase) ・All features free --- Disclaimer --- This app provides approximate measurements using the iPhone's built-in microphone and is not a substitute for legally certified calibrated equipment. For legally binding measurements, consult a professional. --------------------------------- Sage Apps Series A collection of iOS utility apps designed for simplicity and ease of use. Unified design to make your day a little better. >> Search "Sage Apps" on the App Store for more ---------------------------------