Fluid UI
by Fluid UIFluid UI suits designers, product managers, developers, entrepreneurs, and others who need to communicate app ideas.
Facts read 21 Sep 2026 – 15 Oct 2026
Interface design tools let you plan screens, create prototypes and ready designs for development. This guide compares product and interface tools available on web, macOS, iOS, Android, Windows and self-hosted environments.
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 Fluid UI | Fluid UI suits designers, product managers, developers, entrepreneurs, and others who need to communicate app ideas. | 6.5 | $8.25 a month | Free plan | Android, iPhone & iPad, Web, Windows | 30 Sep 2026 |
| 02 Mockplus | Mockplus may suit designers, product managers, and non-designers developing early ideas, as well as designers refining interface details. | 6.4 | $2.98 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, Windows | 14 Oct 2026 |
| 03 UXPin | UXPin suits individuals and product teams building interactive prototypes and sharing them for comments. | 6.3 | $29 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, Windows | 27 Sep 2026 |
| 04 Justinmind | Justinmind suits design teams, business analysts, and developers who need to create and share interactive web or mobile prototypes. | 6.1 | $19 a month | Free plan | Android, iPhone & iPad, Web, Windows | 15 Oct 2026 |
| 05 Figma | Figma suits product teams that need shared design, prototyping, development handoff, whiteboarding, or presentation tools. | 6.0 | $3 a month | Free plan | Android, iPhone & iPad, Web, Windows | 28 Sep 2026 |
| 06 Marvel | Marvel suits individuals and teams building and sharing app or website concepts, then handing design details to developers. | 6.0 | $12 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, API | 15 Oct 2026 |
| 07 Proto.io | Proto.io suits designers and teams who want to create and share interactive prototypes without coding. | 5.9 | $29 a month | Free plan | Android, iPhone & iPad, Web | 28 Sep 2026 |
| 08 ProtoPie | ProtoPie suits designers and teams building interactive prototypes that use device features or connect multiple devices. | 5.8 | $25 a month, billed yearly | Free plan | Android, iPhone & iPad, Web, Windows | 28 Sep 2026 |
| 09 Flinto | 5.4 | $20 a month, billed yearly | Free trial | Android, iPhone & iPad, Web, Mac | 9 Oct 2026 | |
| 10 Penpot | Penpot suits solo users, small teams, mid-market organizations, and enterprises needing shared design and developer handoff. | 5.4 | $7 a month | Free plan | Web, API, Self-hosted | 2 Oct 2026 |
The finder is ordered by newest releases first. Review maker-stated details on free plans, starting prices, prototyping, developer handoff, design systems, live teamwork, desktop operation without a connection and version history.
Fluid UI suits designers, product managers, developers, entrepreneurs, and others who need to communicate app ideas.
Mockplus may suit designers, product managers, and non-designers developing early ideas, as well as designers refining interface details.
AndroidiPhone & iPadWeb+4UXPin suits individuals and product teams building interactive prototypes and sharing them for comments.
AndroidiPhone & iPadWeb+2Justinmind suits design teams, business analysts, and developers who need to create and share interactive web or mobile prototypes.
AndroidiPhone & iPadWeb+4Figma suits product teams that need shared design, prototyping, development handoff, whiteboarding, or presentation tools.
AndroidiPhone & iPadWeb+2Marvel suits individuals and teams building and sharing app or website concepts, then handing design details to developers.
Proto.io suits designers and teams who want to create and share interactive prototypes without coding.
ProtoPie suits designers and teams building interactive prototypes that use device features or connect multiple devices.
Penpot suits solo users, small teams, mid-market organizations, and enterprises needing shared design and developer handoff.
Moqups suits individuals, solo professionals, and teams creating visual product or web materials.
It suits individuals and teams creating interactive app or website wireframes, prototypes, and presentations in a browser.
Sketch suits UI and UX designers working on interfaces, design systems, and prototypes, as well as teams that need browser-based review and developer handoff.
Visily suits founders, product managers, analysts, developers and teams who need to make UI mockups without a design-focused workflow.
Basic may suit personal and nonprofit visual thinking.
Origami Studio suits designers who want to build interactive prototypes with adaptive layouts and device-aware interactions.
Pencil suits people creating interface mockups or diagrams on Linux, macOS, or Windows who want a free desktop tool.
Uizard fits individuals, teams, and organizations that need browser-based interface design, prototyping, collaboration, and developer handoff.
A free plan can let you begin without a subscription. A free trial gives you a time-limited way to assess paid features.
Check the stated entry price and billing terms. Flinto lists a $99 price with a 14-day trial. Justinmind shows a free plan, paid plans beginning at $19 per month and a 10-day trial. Moqups lists paid plans from $7 per user per month on annual billing.
Look at whether each option supports web, macOS, iOS, Android, Windows or self-hosted deployment. A web tool suits browser-based work, while a desktop app can matter when you need offline access.
Check platform support before choosing a tool for a mixed-device team or a self-hosted environment.
Prototype capability shows how closely a tool can represent an interface before development. Compare the prototype features listed for the tools you are considering.
If your work needs interactive flows, confirm that the tool's prototype support fits those flows before committing to a plan.
Developer handoff can affect how design details move into implementation. Design-system support can help organize reusable interface elements.
Compare these capabilities with your development process. If you need to read or change code, check the tool's licence terms.
Real-time collaboration matters when people need to work together in the same project. Version history helps you review or restore earlier work.
Compare these features with the way your team shares files and reviews changes.