* Does not require code to configure and start experiments * Allows you to modify properties of existing elements in between app releases (e.g. text, color, etc.) * Start experiments and immediately push changes to your live app without requiring App Store review * Requires Live Variables to already have been identified prior to App Store submission * Optimizely allows you to change variable values in between releases * Requires new code/features to be tested have already been submitted to App Store and approved * Can perform phased roll-outs of new features for targeted group or percentage of your users directly from Optimizely * Optimizely acts as the switch enabling you to intelligently activate your features/code and analyze the impact the new changes have made

* Create multiple variations of a website in minutes * Track revenue, signups, clicks or any other conversion goal * Know the statistical validity of the results * Create A/B tests and other campaigns in minutes * Load pages even behind login walls * Unlimited undo to fix your mistakes * Know which designs produce maximum conversions * Track multiple conversion goals at the same time * Validate results through statistical methods * Analyze visitors’ click behavior * Tells you whether visitors are clicking where you intend them to click * Highlights distracting elements of a page * Supported devices: iPhone, iPad, Android and Windows Phones * Emulates the look and feel of mobile website * Best used on responsive websites * Install code site-wide and create campaigns on VWO dashboard