Linearity Curve vs ProtoSketch

Linearity Curve is a design app for vector and raster artwork, with illustration tools, templates, brand kits, and presentation design. Native apps run on iPad, Mac, and iPhone; supported systems include iPadOS 14 and macOS Big Sur or later. Users can edit PDFs as Curve files, including transforming, annotating, and signing them, then export to PDF, SVG, EPS, and other print or digital formats. AI tools include background removal, AI Grab, and Magic Eraser. Core design features, local files, and exports work offline, though cloud features may be limited. Users can switch among personal, team, and client workspaces and share files across devices, but real-time collaboration is not available. The free plan includes 250 lifetime credits, one basic brand kit, and 5GB of cloud storage, with no credit card required. Paid plans start at $8 per month billed annually, and a seven-day trial is listed. Students, teachers, schools, and institutions save 58% on the yearly Pro Plan. Files are not used for AI training unless users opt in within the app.

ProtoSketch is vector graphics design software for work spanning web and app graphics, logos, icons, print, illustration, UI and UX. Its stated audience also includes product and marketing designers. The app provides vector tools, icons, fonts, UI elements, and basic and complex shapes. For layout precision, it offers smart guides, object snapping, an adjustable grid, and alignment and distribution commands. Styling options include fills, strokes, gradients, RGB sliders, color wheels, hex input, blending modes and opacity. Users can draw and edit paths, use layers and groups, and apply divide, exclude, minus front, unite and intersect operations. ProtoSketch currently exports PDF, imports and exports PNG and JPG, and supports SVG data exchange; SVG import is planned for a future version. On iOS, Dropbox can import documents and images, while “Open in…” functionality is also available. iCloud syncing across Mac, iPad and iPhone is planned. ProtoSketch Lite costs nothing and allows up to five documents, with some libraries locked and exports restricted to social shares and ProtoSketch files. The Mac version is in development.