Linearity Curve

Linearity Curve is a design app for vector and raster artwork, with illustration tools, templates and brand kits. It runs as a native app on iPad, Mac and iPhone, and includes presentation design. Users can open PDFs as Curve files to edit, transform, annotate or sign them, then export to PDF, SVG, EPS and other print or digital formats. The app includes AI 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, without requiring a credit card. Paid plans start at $8/mo 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.

Curve combines illustration, image editing and PDF workflows, with core features available offline. The free plan provides a starting point, while users needing real-time collaboration should note that it is not available.

Curve suits illustrators and other designers working on iPad, Mac or iPhone who need vector and raster tools, PDF editing or offline work. Its workspaces may also suit users sharing files across personal, team and client projects.

Overview

Linearity Curve is a design app for illustration, image editing, presentations, and PDF work, with native apps for iPad, Mac, and iPhone. It is best suited to people who want vector and raster tools alongside document and brand-asset workflows. Its strongest case is the breadth of those tools, while teams that need real-time co-editing should look elsewhere.

Key features

Curve combines vector and raster editing with illustration tools, AI background removal, AI Grab, and Magic Eraser. That range lets designers work on artwork and image cleanup in one app. Templates and brand kits help maintain consistency across recurring projects; the free plan's single basic brand kit is a useful starting point, but its 250 lifetime credits make it a limited option for ongoing credit-based work.

PDFs can be opened as native Curve files and edited, transformed, annotated, or signed. Exports include PDF, SVG, EPS, and other print and digital formats, making Curve relevant beyond illustration alone. Integrations with Brandfetch, Unsplash, SF Symbols, Icons8, Figma, Illustrator, and Sketch give designers ways to bring in assets and connect existing design work.

Personal, team, and client workspaces support switching contexts and sharing files across devices. Core design features, local files, and exports work offline, which is useful when connectivity is unreliable; cloud features may be limited offline. Files are not used for AI training unless a user explicitly opts in within the application.

Pricing

The Free plan costs nothing, requires no credit card, and includes 250 lifetime credits, one basic brand kit, and 5 GB of cloud storage. It is a low-commitment way to try Curve, but the lifetime credit pool and smaller storage allowance make it less suited to sustained, resource-intensive work.

Starter costs $8 a month, billed annually, and provides 800 credits per month and 10 GB of storage. It fits users who need a recurring credit allowance at the lowest paid price, though its storage is modest. Pro also costs $8 a month billed annually, with monthly billing shown at $10 per editor/month. For individuals, it raises the allowance to 3,250 credits per month and 100 GB of storage, making it the more capable individual tier for ongoing work.

Business costs $65 a month billed annually; monthly billing is shown at $80 per editor/month. Its 6,500 monthly credits and 500 GB storage target teams needing advanced controls and governance. Studio costs $25 per editor/month billed annually, or $30 per editor/month with monthly billing, and is described for teams creating together in real time. That offering sits uneasily beside Curve's stated lack of real-time collaboration, so teams should confirm the workflow meets their needs before choosing it.

Enterprise has custom pricing and contract terms, with org-shared credits, export permissions, team onboarding, an account manager, and SSO. Students, teachers, schools, and institutions save 58% on the yearly Pro Plan. Online payment accepts major credit cards; invoicing is available for Org plan. A 7-day trial is offered. The stated prices do not describe trial conversion or renewal terms.

Platforms

Curve runs on iPadOS 14 or macOS Big Sur and later, with native iPad, Mac, and iPhone apps. Its Apple-device focus is a good fit for people working across those platforms, but not for readers who need a Windows or Android app. Support resources include a help center, user guides, tutorials, templates, and a status page.

Who it's for

Curve suits illustrators and designers who need vector and raster editing, brand assets, and flexible PDF handling in one toolkit. Its offline-capable core and Apple apps also make it practical for individuals working across iPad and Mac. Teams can use shared workspaces, but those needing dependable real-time collaboration should assess alternatives rather than assume the Studio plan resolves the stated limitation.

Pros and cons

• Pros: Vector and raster editing, illustration, and PDF tools sit together, reducing the need to move between separate apps for those tasks.
• Pros: Offline support for core design, local files, and exports helps keep work moving without a connection.
• Pros: The free tier needs no card and includes a basic brand kit and cloud storage, so users can start without paying.
• Cons: The free plan's 250 credits are lifetime credits, not a monthly allowance, limiting its usefulness for continuing credit-heavy work.
• Cons: Real-time collaboration is stated as unavailable, a meaningful constraint for teams that co-edit live.
• Cons: Native support is centered on iPad, Mac, and iPhone, leaving Windows- and Android-first users without a listed native app.

Alternatives

Choose PosterMyWall if social publishing and campaign materials matter more than Curve's vector and PDF workflow: its free plan includes templates, publishing to one social account, a content planner, and signup forms.

Visme is an alternative for web-based presentation work, with a free plan offering 500 MB of storage and 50 slides or pages per project. Its Starter plan costs $12.25 a month billed annually and includes 1 GB of storage.

Choose Adobe Express Video if a large template library and monthly generative credits are the priority: its free plan includes 25 generative credits per month, more than 155,000 templates, and 5 GB of storage.

Desygner may suit readers looking for a free plan with multi-user access: it includes 3 users, 100 projects, 20 AI credits per month, and 5 GB of storage.

HueFold is another freemium option, with Android and web platforms and a free plan.

Microsoft Designer offers free access with a Microsoft account, with usage limits that may apply, and web, iOS, and Android platforms.

Simplified is a freemium alternative available on web, iOS, and Android, with 1 GB of storage on its free plan.

Picsart is a freemium alternative available on web, Windows, iOS, and Android.

For browsing more options, see AI Graphic Design Software, Vector Graphics Software, Podcast Cover Maker Software, and Graphic Design Software.

Verdict

Choose Linearity Curve if you want illustration, image editing, and PDF handling in one Apple-focused app, with offline-capable core features and a no-card free tier. Its broad toolkit is the main reason to choose it; the lack of real-time collaboration is the clearest reason teams that co-edit live should look elsewhere.