Apps like WhatGas?

Here are some great alternatives to WhatGas? by UNEP (United Nations Environment Programme) :
EPA 608 Practice
EPA 608 Practice
★4.7
HVAC Practice Test 2024
HVAC Practice Test 2024
★4.9
KoolCode
KoolCode
★4.2
Ref Tools
Ref Tools
★4.7
Forane® Refrigerants Tool Belt
Forane® Refrigerants Tool Belt
★4.2
HVACR Check & Charge
HVACR Check & Charge
★4.8
Refrigeration ToolKit
Refrigeration ToolKit
★4.4
SMART Service Tool
SMART Service Tool
★4.3
RefTech
RefTech
★3.8
HVAC Refrigerant PT - A/C
HVAC Refrigerant PT - A/C
★3.6
GlacierGrid
GlacierGrid
★3.9
HVACR Fault Finder
HVACR Fault Finder
★3.4
Cold Room Calculator
Cold Room Calculator
★4.0
Air quality app & AQI widget
Air quality app & AQI widget
★4.1
EPA's AIRNow
EPA's AIRNow
★3.5
SAMSUNG HVAC
SAMSUNG HVAC
★3.8