Yes, Proto.io is completely free and it doesn't have any in-app purchases or subscriptions.
⚠️ The Proto.io app has poor ratings and negative feedback. Users seem unsatisfied with its performance or features.
Proto.io is free.
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This service made prototyping so simple.I am not a graphic designer and I’ve never made a prototype before, however, this software made it possible with relative ease. It has powerful features and functions that make prototyping easy, simple, and quick. I’m very happy I found this service.
This is really remarkable software. Almost no learning curve, and outstanding functionality. Stoked!
Surprised many of the other reviews here are experiencing bugs, I’ve been using the app every day for 2 week with no issues. I originally was using Figma’s Smart Animate feature but performance was unreliable and it lacked a timeline so I switched over to Proto.io.
This is by far the best prototyping platform available. The extend to which you can control details about animations and user interactions completely surpasses that of Adobe XD. I would like to see update UI elements for iOS 13 but other than that it's brilliant.
Can’t view shared links or log in with credentials, currently support is slow to respond
bad
I don't want this app, I didn't ask for it, how do I get rid of it?
Can't use Google cardboard to test VR prototypes because the images aren't aligned properly. iPhone X. Must be due to the notch. This has me sad. 😭😭😭
I’m cancelling my subscription. What a waist!
A well-designed, intuitive tool for testing. Proto has helped our team to rapidly prototype new game mechanics for title that we’re developing. I love the interface, and the ability to test our ideas with people across the world. Proto makes it easy for non-technical people to come up with really compel, robust, believable experiences. Hugs thanks to the Proto.io team!
