Spline
Linearity Curve
| Feature | Spline | Linearity Curve |
|---|---|---|
| Pricing | Free / from $9/mo | Free / from $7.99/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.3 / 5 | 4.4 / 5 |
| Best For | web-designers, product-designers, front-end-developers, creative-agencies | illustrators, ui-designers, typography-designers, apple-users |
| Founded | 2020 | 2017 |
| 3d Modeling | ✓ | ✗ |
| Real Time Collaboration | ✓ | ✗ |
| Animations | ✓ | ✗ |
| Interactions | ✓ | ✗ |
| Web Export | ✓ | ✗ |
| Materials | ✓ | ✗ |
| Physics | ✓ | ✗ |
| Vector Editing | ✗ | ✓ |
| Auto Trace | ✗ | ✓ |
| Typography | ✗ | ✓ |
| Templates | ✗ | ✓ |
| Gesture Controls | ✗ | ✓ |
| Export Formats | ✗ | ✓ |
✓ Spline Pros
- Browser-based with no installation required
- Easy to learn compared to traditional 3D tools
- Real-time collaboration like Figma for 3D
- Direct export to web (React, iframe, vanilla JS)
✗ Spline Cons
- Limited to simpler 3D scenes (not production rendering)
- Performance issues with complex models
- Fewer modeling tools than dedicated 3D software
✓ Linearity Curve Pros
- Free with full features
- Excellent Apple device support
- Intuitive pen tool
- Beautiful interface
✗ Linearity Curve Cons
- Apple ecosystem only
- Limited collaboration
- Fewer plugins than Illustrator
The Verdict
Spline is built for web designers and product designers, with a focus on 3d-modeling and real-time-collaboration. Linearity Curve targets illustrators and ui designers and leads with vector-editing and auto-trace.
Pricing is close: Linearity Curve starts at $7.99/mo versus $9/mo for Spline — not a deciding factor on its own.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Spline offers broader built-in capabilities (7 features vs 6), while Linearity Curve takes a more focused approach — which can mean a simpler, faster onboarding experience.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.