SubStandard is an easy to use app to apply cold temperature corrections in aviation.
Moreover it lets you store sets of altitudes for quick access later on.
https://andro.io/app/substandard
Power 100
Android app profile
SubStandard for Android – Latest Version & Features
by iService Advertising Agency
★★★★★
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> 2.2k
Monthly Downloads
~$900
Estimated Cost
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