Google Forms is a popular service that comes with many tutorials on places like YouTube. Setting up forms is generally straightforward. All the relevant information must be entered, response type must be given, and then the questions can be arranged.
While Google Forms offer a quick fix for a lot of problems, the forms are mostly static. For example, there is no way to have questions be hidden or shown based on a condition.
By having one question at a time, a beautiful design and awesome UX, form submission percentage is much higher than other similar services. Usual typeform have around 40-50% submission rate of all visits.
Most similar services offer basic features for free but charge for advanced features. This service allows for things like file upload with no additional charge, and even allows unlimited submissions for free. The only thing that costs money is to accept payment - they take 1% of every payment that is processed.
You get a form endpoint like https://getsimpleform.com/messages?form_api_token=39c8f9e5a2de15ad63469475702522b9 which you can plug into your form's action. Giving you complete control over your markup.
Contlo is built for mobile first world and forms are optimised for all mobile screen sizes keeping in mind the low screen estate of mobile form factor.
Calculating forms interacts with user. It gives meaningful data to user instantly and at the same time collects required information (captures lead). Of course it doesn't fit every situation, but works awesome when you need to capture data for quick price estimate etc.
We have explored many survey tools for insights and data gathering. Formester would have one of the best user interfaces that's very easy to use, intuitive, and quite honestly looks great. It's very easy to navigate with users(both survey creators and respondents)easily able to adapt it. It also has a lot of options when integrated with zapier. The best thing about Formester is the branding and the modern design that you can have on your form without any graphic design experience.