Cairn vs Marvel

Cairn is a macOS desktop app for mapping screens, data, roles, and CRUD operations before building a product. Users sketch low-fidelity pages, modals, and sheets, then connect them into scenarios with triggers and dependencies across roles. Cairn checks whether data used on a screen was created earlier in its causal flow and flags missing data. Its Fields and Journeys views show where data appears and how each role moves through a flow. The app works offline and saves projects as portable.cairn files on the user's Mac. The maker says Cairn has no accounts or telemetry and does not upload project files; it connects to the internet for update checks and Pro license validation. Cairn is positioned as a complement to Figma for later visual design. The free plan costs nothing and includes one project and up to two scenarios, but does not allow file import or export. Real-time collaboration is not available, and Cairn is not intended for pixel-perfect or high-fidelity design.

Marvel is a design platform for creating wireframes, mockups, prototypes, and design specifications. From a browser, users can make website and app designs for different devices, then share interactive prototypes that demonstrate intended interactions without coding. Its Handoff tool generates downloadable assets and CSS, Swift, and Android XML code that stays synchronized with design changes.

Teams can organize projects in folders, create teams, and leave feedback through comments and annotations. Marvel lists integrations such as Sketch, Jira, Confluence, Dropbox Paper, and Microsoft Teams, as well as a GraphQL API for project data and design activity. Its mobile apps let users create, play, and share prototypes, with offline viewing and Sketch syncing. The free plan allows one user and one project; moving down to the free plan makes other projects inactive. Pro costs $12 a month, billed yearly, and a seven-day trial is listed. Marvel was founded in 2013 and is headquartered in London.