Sololearn should include Objective-C course
to start with development in iOS, Objective-C is initial step, i am having difficulty in learning swift directly.
You don't need to learn Objective-C to program for iOS/Mac. It may help in some areas, but it's not necessary. If you feel you must learn Objective-C and are having difficulty with it, you may want to start by learning C first. That being said, Swift is the direction that Apple is moving toward so it is what you should be learning.
Yes you'd only need to learn any Objective-C if you are using some library, open source code, or working on a group/team project that required it. If you are just creating your own independent apps you will most likely never need it. I haven't used any Objective-C in any of my apps since Swift came out.
thanks, feeling relieved now. However, where should i start in order to be an iOS developer?
Get a newer Mac or Hackintosh, download and install xcode from the app store. Then start learning Swift via the tutorial here and/or from another source like Udemy, Udacity, Sitepoint Lynda.com etc. There are also a few free ebooks that Apple has put out for iBooks. Then just start by making a few simple apps.
i know c at certain level, so you are saying that learning swift is enough for me to grasp and start developing ios apps?