Developer Sandbox accounts are essentially like regular company accounts, but are by default limited to 5 seats as these accounts serve as safe development and testing environments for app developers.
The Developer Sandbox accounts should be used either for
a) performing testing in a risk-free environment (requires an existing paid Pipedrive account),
b) building and developing integration with Pipedrive and then for basic maintenance of your app afterward (this option gives you access to the Marketplace Manager).
To get access to your Developer Sandbox account, just fill out the form here and you should get access to the account shortly.
To see how Pipedrive works and displays information, you can import template spreadsheets with dummy data either in English or in Portuguese.
To import the data from the spreadsheets go to Settings > Tools and apps > (Data) > Import Data in the Pipedrive web app.
Updated about a month ago