The Psychro-Chart from Nortec is a free app for calculating air conditions and the corresponding humidification or heating required. Complex air humidity calculations can be performed extremely accurately and simply, which means that a range of scenarios can be assessed quickly and straightforwardly.
The App can send the results of a calculation by e-mail, or print them out directly with the help of a printer connected by WiFi.
You can download Nortec's Psychrometric Chart App free from the Apple App Store.
Just tap this link on your iPad, and you’ll be taken directly to the App Store to download the app.