Fluid UI vs MockFlow

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.

MockFlow is a visual brainstorming workspace for diagrams, mind maps, flowcharts, moodboards, storyboards, wireframing, and lite prototyping. WireframePro, its wireframing and lite prototyping tool, is included on every plan. The product is available through web, desktop, and browser extension, with listed platforms including macOS and Windows. Integrations include Slack, Microsoft Teams, Office 365, Jira, Confluence, Trello, Google Drive, Google Docs, and MCP. Mida AI uses a monthly credit pool, and Bridge can run compatible AI agents on the user's machine. Plus adds team chat, audio comments and meetings, role-based sharing, collaborative components, and multiplayer board editing. Max lists connectors to more than 20 business apps, Figma export, Build mode, SSO, SAML, SCIM, and an offline desktop app. Basic is restricted to personal and nonprofit work; commercial or business work requires a paid plan. Basic costs nothing and includes four projects, one editor, five reviewers, 500 components, and 100 AI credits per month. MockFlow says data is continuously backed up and sensitive information is encrypted with a 256-bit key.