Turn your iPhone into a digital sound level meter is the easiest solution to reading surrounding noises and sound levels. It's cheaper and gives as high accuracy as traditional SPL meter devices. (1) Setting up home theater or studio mixer by calibrating speaker easily. (2) Check noise pollution at home, at work, at public places or during concert events. (3) Make noise complaints by capturing photos/videos with noise level overlay. (4) Take QuickSIN hearing test, commonly used at clinics. OUR KEY FEATURES: SOUND SPECTRUM ANALYZER > Analyse audio spectrum > dB range from 30dBA to 130dBA > Frequency range from 20Hz to 20,000 Hz. > Make recordings and export to audio files or CSV ENVIRONMENTAL NOISE DETECTOR > General environment noise detector > Musical instruments sound detector > Carpentry tool noise detector MAKE NOISE COMPLAINTS > Take photos or video with real-time DB measure overlay > Save to iPhone or share to Apple or Google Maps CLINICAL HEARING TEST > QuickSIN test to check hearing ability > Store last test results DOSIMETER FOR HEARING PROTECTION > Check noise exposure over time > NIOSH, OSHA standards under CDC SUBSCRIPTION PLANS: > Monthly subscription: 3 day free trial then $12.99 > 6-month subscription : $39.99 Information about the auto-renewal of subscription: Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. The cost depends on the selected plan. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Any unused portion of the free trial will be forfeited when the user purchases a subscription. Privacy Policy: http://astraler.com/privacy-policy Terms of Use: http://astraler.com/terms