Side by side

Fluid UI vs PrototypeTool

Both stand on prototyping software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Fluid UI

Free plan AndroidiPhoneLinux+3

Fluid UI combines mockup creation, interactive prototyping and review features, with plans ranging from a free account to paid options. Check the project and user limits against the size of your workgroup.

Visit Fluid UI

PrototypeTool

Free plan Web

Pick PrototypeTool if you need web-based interactive prototypes and want an individual free tier or team collaboration features on Pro. Look elsewhere if unrestricted prototype sharing is essential, or if you need an Enterprise price before contacting the provider.

Visit PrototypeTool

The facts

	Fluid UI	PrototypeTool
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	Android, iPhone, Linux, Mac, Web, Windows	Web
Lowest paid plan	Solo: $8.25 a month	Pro: $29 a month
Plans published	7	4
Maker	Fluid UI	Not published
Website	fluidui.com	prototypetool.com
On prototyping software	#2 of 30	#21 of 30

Fluid UI: what it does well

More than 2,000 built-in components
Prototypes support taps, swipes and clicks
Real-time collaboration on cloud-saved projects
Reviewer mode includes annotations and comments
Android and iOS preview apps

What to know first

Solo plan allows five active projects
Solo plan includes one user license
Solo costs $8.25 a month

PrototypeTool: what it does well

Free Basic plan includes core interactions and templates.
Basic signup does not require a credit card.
Pro includes unlimited workspaces, approvals and analytics.
Prototype triggers can use motion, camera, location and feedback.
Enterprise includes SSO/SAML, audit logs and custom integrations.

What to know first

Basic is limited to one workspace.
Prototype sharing is restricted.
Enterprise pricing is custom.
Basic support is community support.

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