Fluid UI vs Pencil Project
Fluid UI
fluidui.com
Pencil Project
pencil.evolus.vnSide by side
| Figure | Fluid UI | Pencil Project |
|---|---|---|
| Price from | $8.25/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| Plans published | 7 | 1 |
| Spec score · Wireframing Software | 8.8 (#4) | 7.8 (#16) |
| Spec score · UI design tools | 8.8 (#7) | 7.7 (#28) |
| Spec score · Prototyping Software | 8.8 (#6) | 7.8 (#24) |
| Spec score · Game UI Design Software | 8.8 (#8) | 7.8 (#25) |
| Spec score · Interface Design Tools | 8.8 (#7) | 7.8 (#17) |
| Spec score · UI/UX Design Tools | 8.8 (#8) | 7.8 (#21) |
| Spec score · Wireframe Tools | 8.7 (#8) | 7.8 (#17) |
| Spec score · Prototyping tools | 8.5 (#13) | 7.6 (#27) |
| Free plan | Yes | Yes |
| Purpose | Fluid UI is a web-based tool for creating, editing, previewing, sharing and exporting mockup versions of mobile apps. | Pencil is a free, open-source GUI prototyping tool for creating mockups. |
| Support | The Fluid UI team says built-in live chat support is available 16 hours a day. | The site invites users to support continued development through donations. |
Plans
Fluid UI
- Solo$8.25 a month
- Pro$19.08 a month
- Team$41.58 a month
- FreeFree
- Solo$99 a year
- Pro$229 a year
- Team$499 a year
In their own words
Fluid UI
Fluid UI is a web-based tool for making, previewing, sharing, and exporting mobile app mockups. It supports interactive web and mobile prototypes with taps, swipes, clicks, and other gestures, plus page effects such as fades, flips, and pop-ins. The built-in library contains more than 2,000 components spanning Material Design, iOS, Windows, and wireframe styles. Teams can collaborate on cloud-saved projects in real time. Reviewer mode supports shared click-throughs, chat, annotations, and comments, and the service also supports remote user testing sessions. Fluid UI runs in Firefox and Chrome, offers an installable desktop client, and has Android and iOS preview apps. There is a free plan and a free trial. Paid plans include Solo at $8.25 a month for five active projects, one user license, and unlimited reviewers; Pro is $19.08 a month, and Team is $41.58 a month.
Pencil Project
Pencil Project is a free, open-source desktop tool for creating GUI mockups, wireframes, and diagrams. Built-in stencil collections cover desktop, web, Android, and iOS interfaces; connectors and flowchart shapes support diagramming. Elements can link to pages in the same document, and those links become hyperlinks in web exports. Drawings can be exported as PNG files, web pages, OpenOffice or LibreOffice text documents, Inkscape SVG, or Adobe PDF. A clipart browser connected to OpenClipart.org lets users add vector clipart by dragging it into a project. Stencil collections and export templates can be installed as add-ons. Pencil runs on Linux, macOS, and Windows, with downloads for Fedora and Ubuntu, other GNU/Linux distributions, Windows, and macOS. The macOS DMG supports Intel and Apple Silicon. Pencil is published under GNU General Public License version 2; Evolus also describes a commercial source-code license. The site identifies version 3.1.1 as the latest stable release and warns that nightly development builds are unstable. It provides a SHA-1 checksum link for download verification and invites donations to support development.