What programming language do the following apps have?

I am working on a Android and IOS green screen app and I need to know what programming language "Green Screen Pro - Chroma Key" (from Android) and "Green Screen Studio". (From Apple) have.

Here are the links to the apps:

Green Screen Studio- https://itunes.apple.com/us/app/green-screen-studio/id323912556?mt=8

Green Screen Pro - Chroma Key- https://play.google.com/store/apps/details?id=com.thorusproductions.greenscreen&hl=en

Any ideas on what programming language I should use?
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Neil RussellTechnical Development LeadCommented:
The programming language is mostly irrelevant for the products concerned.  You are more restricted when it comes to IOS of course but what you use is down to you as a developer.
Chris Harte2015 Top Expert (Most Article Points)Commented:
I do not think you are going to be able to make a hybrid app that can achieve this. They are going to have to be done separately and natively. That means Android Java and Objective C.

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Chris Harte2015 Top Expert (Most Article Points)Commented:
The question has been addressed
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