Make a web form that can be filled and submitted multiple times.

For Interactive Computations...

Create a FormPage

Create a FormPage that shows a map of a city entered by the user:

Deploy the FormPage

Deploy the FormPage to the Wolfram Cloud, specifying Permissions->"Public" to give anyone access to it:

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Use the FormPage

Click the link in the CloudObject output of CloudDeploy to use the web form:

After finishing one computation, you can immediately try another:

For Collecting Data...

Create a databin

Create a databin to store collected data:

Click for copyable input

Create a FormPage

Create a FormPage that adds numerical entries to the databin:

Deploy the FormPage

Deploy the FormPage to the Wolfram Cloud, specifying Permissions->"Public" to give anyone access to it:

Use the FormPage

Click the link in the CloudObject output of CloudDeploy to use the web form:

You can add subsequent entries by refilling and resubmitting the form.

Access the entries

Access the entries directly from the Databin object for computations: