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I have a common question. There is some app. I know it's compatible with Mac OS X Version 10.7.5 (Build 11G63). May I be sure if it's fully compatible with:

  • 10.7.5 (Build 11G63b)
  • 10.7.4 (Build 11E53)
  • 10.7.0
  • 10.6.8
  • 10.8.1
  • ...

etc. I suppose the answer is always "no", because every build has its special features, it needs special testing. Is it really so?

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up vote 2 down vote accepted

The answer is always no (one cannot assume compatibility backwards or ahead). Universal truth that applies to everything running on anything.

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