Added new low GWP refrigerant: R-454B and R-454B (Dew)

1. Fixed issue with PT list user interface overlapping top title bar
2. Fixed negative number issue

1. Updated PT values
2. Updated ad engine

1. Updated Google Analytics and Crashlytics

1. Updated the app launch screen per Apple's new guidelines.

1. Fixed the "negative sign" issue that occurs in iOS 13
2. Fixed issue with not displaying properly in iOS 13 "dark mode"

1. Updated images at the top of screen
2. Updated help
3. Compiled for iOS 13

1. Added 5 new refrigerants including R-450A, R-455A, R-452A, R-452B, R-1233ZD, R-245FA (and all dew/bubble versions)
2. Updated user interface to accommodate the latest iPhone X* screens
3. Updated help

Updated for iOS 11

1. Added 20+ new refrigerants for a total of over 100 refrigerants
2. Added "Dew" pressure-temperature tables for all refrigerants that are azeotropic (mixtures)
3. Added new in-app ads
4. Updated help

1. Added Google Analytics

1. Added the HVAC Equipment Locator app.

1. Fixed some UI bugs the occur on iOS 8
2. Fixed emailing issue that occurs in iOS 8

1. Optimized for iOS 8
2. Fixed numerical formatting bugs due to iOS 8

1. Updated in-app ads

2. Fixed bug with values not refreshing when select another refrigerant

1. Universal app (works on both iPhone and iPad and adjusts screen size accordingly)

2. Works with iOS 7

1. Updated library

2. Updated help

1. Display refrigerant properties like oil type, GWP, composition, boiling temp, critical temp, and much more ...

2. Email project inputs and properties for the selected refrigerant

3. Email the full pressure/temperature list for the selected refrigerant