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Mac, iOS

Ideal for


Form is ideal for building native prototypes that simulate high fidelity animations and interactions for iOS apps.

Prototypes are built with patches that have inputs and outputs, and a live update of the prototype is displayed on a connected device. Images can be dragged and dropped into the tool and used in prototypes.


  • Live simulation of prototype on device with Form app; updates in real-time.
  • Fine-grain control for adding interactivity and animations to individual elements.
  • Generates a native iOS prototype.
  • Support for multiple gesture-based interactions (eg. tap, scroll, etc.)
  • High fidelity output for animations and interactions without writing any code.
  • Good video tutorials and support to help new users get started.


  • Steep learning curve; not easy to use for a first-time user.
  • No ability to preview prototype on desktop; can only preview on mobile device.
  • Understanding the tool seems somewhat dependent on a basic understanding of programming.
  • Patches quickly become hard to manage when simulating multiple states and animations, especially as a first time user.
  • No page element in the tool; had to mentally keep track of which groups of patches correlated with which states and pages.

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