Easily calculate air velocity and airflow volume for various duct types. Input dimensions and units, and get instant results for HVAC and ventilation applications.






10+ similar apps compared and reviewed
Whether you want more options like Road's Eye or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.






Easily calculate air velocity and airflow volume for various duct types. Input dimensions and units, and get instant results for HVAC and ventilation applications.









Transforms your iPhone into a professional dashcam, automatically recording, backing up, and organizing your drives. Capture footage with speed and timestamp overlays, and store it securely in the cloud for peace of mind or evidence.






Transform your smartphone into a powerful dash cam. It continuously records your drives, logs GPS routes, and automatically detects collisions, providing essential evidence and a clear overview of your journeys.


Record your journeys in high resolution with a dash camera and view footage on your smartphone. This app allows direct video transfer to your iPhone, ensuring all road details are captured for playback or future reference.




This app offers a suite of 8+ measurement and utility tools, including AR rulers, levels, protractors, and bolt sizers. It simplifies tasks like measuring spaces, checking surfaces, and identifying hardware sizes, making projects more efficient.


Transform your smartphone into a powerful dashcam. Stream live video, record journeys, capture photos, and manage camera settings. Features auto-save on impact and remote control for enhanced safety and convenience.