A company can become a huge success if it manages to identify an unsolved problem and provide a solution for it. Others can keep or expand their markets by improving existing solutions. Still, sometimes the hardest part is not solving the problem but finding it. And here is where all those surveys and questionnaires come into play. The user feedbacks gathered through these basic tools are a continuous source of information. 
User feedback apps can help you create professional looking surveys and questionnaires. And some of them offer interesting interfaces that facilitate the communication between customers and vendors. 
The main advantage of using user feedback apps is that you can reach a large number of people very fast. 
After careful consideration we, the AppAppeal team, have selected the winners of the user feedback AppAwards. 

Most user friendly: SurveyMonkey

Probably the most used user feedback app, Survey Monkey helps you build online surveys. Users can choose from a variety of types of questions, designs, and many other functionalities. The surveys created can be sent through e-mail, uploaded on a website or even on Facebook. The app is very user friendly and the demos make creating your first questionnaire easy as pie.