Pidoco vs FluidUI

Pidoco has a simple, intuitive drag&drop interface. Context menus and context-sensitive toolbars make editing super quick.

Pidoco offers a large library of 400+ interactive interface elements as well as an extensive set of icons as building blocks.

So simple to invite reviewers and collaborators and to collect feedback!

Can use a variety of options to save time and avoid duplicate work, e.g. layers, custom elements, scroll frame references. Global layers and reusable custom templates speed up prototyping.

Offers an easy way to simulate common types of screen transition effects including for swipe interactions or adding delays. Also allows for sequential reactions.

Direct simulation of prototypes possible by switching from editing to preview mode.

A screenmap lets you easily link individual prototype pages. This is also great for uploading screenshots and linking them via action hotspots.

It's possible to simulate the prototypes directly on mobile devices - in the browser or with an handy app.

Assets can be placed in layers and displayed on several pages. Provides for easy updating of entire project in case of changes.

The learning curve is relatively low compared to other software that supports animations/transitions. Both building the wireframes and designing the interactions is all drop and drag.

Work with your team on a design. Connect on live video calls and chat or add comments.

You can simulate all the typical iOS gestures such as tap, double tap, swipe & long hold. These gestures then can trigger animated transitions such as sliding, fading, pop in, & flip. This enables you to create very realistic interactable demos of your app. Checkout the demo page for some examples.

Every action you or your team takes automatically creates a revision you can easily revert to.

The UI library is huge and very high quality. All the UI required to design iO7 apps is included as well as iOS 6 and basic wireframing elements. For example in iOS7 it provides:

• Backgrounds
• Navigation & status bars
• Layouts (list pickers, maps, keyboards, scroll etc)
• Controls
• Typography
• Icons

Using the app is feels very snappy.

They have a very reasonable free tier with the paid versions starting at $12/month.

You can preview your designs live in the browser as well as send them to a mobile device to better simulate the UX.

Fluid isn't just about wireframing static screens. You can plan out all the user flows and then define the transitions between them. This is really handy for planning out the entire user workflow.