AcornRaindrop

In a Nutshell, AcornRaindrop...

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  has had 4 commits made by 2 contributors
  representing 104 lines of code
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  is mostly written in Objective-C
  with a very well-commented source code
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  has a codebase with a very short history
  maintained by nobody
  with stable Y-O-Y commits
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  took an estimated 1 years of effort (COCOMO model)
  starting with its first commit in January, 2012
  ending with its most recent commit over 12 years ago