VCallPlus vs Impulse Noise Decibel Meter

VCall+ turns your device into a virtual call point. Initiate a call-in, emergency call-in, lockdown, and more directly from VCall+. VCall+ initiates communications through classroom end-points (mic/speaker or messaging displays) to office admin phones and MapAssistIP software. Lockdown events are displayed within the app and prompt staff to check-in using the lockdown acknowledgement feature. VCall+ is integrated with MapAssistIP to visually display the location of call-ins and lockdown initiations on a school's floorplan based on the users' selected location. Configure the phone number of the initiating device (iPhone only) to pass through to the receiving admin phone. First responders or other staff are empowered to contact the initiating device directly when unable to communicate through the schools' internal intercom system (default). User management and security protocols ensure staff has access only to the appropriate functionality. Staff can save their favorite end-points for easy access as they move around the school.

Firearm Noise Testing | Sound Level Meter helps you monitor sound levels (dB) in real time. It’s designed for very loud environments such as workshops, concerts, and outdoor ranges, so you can make better hearing-safety decisions. The app uses your phone’s microphone to estimate sound pressure level and shows current, minimum, average, and maximum readings with clear visual feedback. Key features • Real-time decibel meter (dB) • Min / Avg / Max tracking • A-weighting (dBA) for everyday noise (closest to human hearing) • C-weighting (dBC) for very loud environments and peak levels • Linear mode for raw/technical readings (no filtering) • Sensitivity calibration (+/−) to compensate for device microphone differences • Clean, readable interface for quick checks Important notes • This app is not a certified or laboratory-grade sound level meter. Readings vary by device model, microphone hardware, phone case, distance, and environment. • For general information and personal awareness only. Not intended for legal, regulatory, medical, or workplace compliance measurements. • Very loud sounds can damage hearing quickly. Always use appropriate hearing protection in loud environments. Privacy • Microphone input is used only to calculate sound level. • We do not sell personal data.