About this app
Gram Clean Air Duct Calculator is a technical app developed to assist ventilation professionals with accurate calculations of pipe diameter, pressure loss, air velocity and airflow. Designed for fast and accurate dimensioning, this app makes it easier to work with complex aspects of process ventilation.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 20, 2026 · 6:04 PM Free
Screenshots
