When comparing Sencha Touch vs Apache Cotton, the Slant community recommends Apache Cotton for most people. In the question“What are the best frameworks for developing Android apps with JavaScript?” Apache Cotton is ranked 6th while Sencha Touch is ranked 8th.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Native feel
Sencha Touch is well known for its ability to provide a native app experience through it's native-like themes and widgets.
Pro Detailed documentation
Sencha provides exhaustive documentation that covers all aspects of developing with their products.
They also provide a well written getting started guide that's easy to follow.
Cons
Con Commercial and expensive
Sencha Touch is targeted towards enterprise-level development, and the price tag reflects that.
There are many different product options available by Sencha. Most licenses start in the thousands of dollars, and require a minimum purchase of 5.