What they say: “Talk to your users. See how they’re using your app or website.”
Lookback is a comprehensive user research product, whether you want to conduct in-person or remote research, test on mobile or desktop, and whether you're looking for moderated or unmoderated.
Visit https://lookback.io/ for more details and for setting up an account.
To get feedback on your Proto.io project, go to Share (either in the Editor or in the Dashboard under MORE > Manage Share links), create a new Share link (shared with everyone, not password protected), go to the ‘User Testing’ tab and copy the generated link to use in Lookback. You need a Lookback account.
Then go to your Lookback dashboard (Lookback account required) and create a new project/test. After naming and setting permissions, set the landing page to the Proto.io share link mentioned above.
Proceed normally with setting up the rest of your project/ test.