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HI Jayneel, you are up against some stiff competitive websites like mashable, apple itself , smashing magazine and  amazon -- for the same keyword and these guys are huge in content and social media syndication.

I haven't looked into your link building strategies yet but I see that your organic kws have dropped badly in the last few months. meaning its not just a single page problem but an overall website authority problem.

I don't see much of your content (compared to your competitors) getting shared and networked.  I feel there are two choices here, work hard at making this site more accessible through content and/or branch out to variations of this key-phrase.

Unfortunately on a situation like this - trying to counter algorithmic updates is of no use because eventually algos are going to get stricter and stricter so thinking of long term goals via content syndication can save this page and the overall website.

Jayneel, the link building strategy you are using is very non-organic and orthodox. If you read the other comments below, you will actually understand that the community here on this thread is all hinting at a wrong type of link building which doesn't work anymore. You don't have to completely kill this effort but work on the quality and relevance from the pages you are linking back from.

You can observe cbpayne,  brian-h (below )and myself dont think this link building is strategic these days. Irving above is also headed toward the same conclusion.

My advice would be to re-invent the page and start with content enrichment and work on a community that can share this knowledge. I think instead of writing more about what is iphone app development, think of how you do Iphone app development, let your content people work with your developers to come with more insightful stuff that will get a handful of shares and likes.

Compared to the competition I mentioned before, if you were to focus on making this page amazing, you have a chance. But I don't think it can be done by links building, you need to earn each and every one one at a time. Will take long for sure but you can get there.