Doing Apple and Microsoft mainly (but basically anything when it's required, like a PHP or Python API for an app or JS for a website), I'd say doing iOS work is the main part of it in terms of offers.
iOS projects are or can be pretty small yet they require a great deal of expertise to execute correctly. I worked on many projects solo or in distributed teams.
Microsoft work is a bit harder to find (or doesn't get delivered on my doorstep as often) but more often when you do land it you're going to be The Only Guy That Knows How The System Works after a while since ASP.Net and WinForms / WPF / etc applications are more often slowly evolving highly specific and mission critical applications, so once you land them you're in a better position than with those many one off iOS applications.
I guess Java and .Net are more or less interchangeable in that regard.
iOS projects are or can be pretty small yet they require a great deal of expertise to execute correctly. I worked on many projects solo or in distributed teams.
Microsoft work is a bit harder to find (or doesn't get delivered on my doorstep as often) but more often when you do land it you're going to be The Only Guy That Knows How The System Works after a while since ASP.Net and WinForms / WPF / etc applications are more often slowly evolving highly specific and mission critical applications, so once you land them you're in a better position than with those many one off iOS applications.
I guess Java and .Net are more or less interchangeable in that regard.