The acoust IQ-App turns an iPhone or iPad into a high-performance Class 1 sound level meter using a compatible external microphone. The app provides a guided, standards-compliant workflow from acquisition to documentation, including non-destructive editing, metadata capture (images, notes, GPS/Galileo, speech-to-text), template-based reporting, and seamless export. Designed for professional use in industry, environmental work, construction, and research.