Principle
Animation software
Video software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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$129 per computer
Free Trial
Free version unavailable
Small
Medium
Large
- Information technology and software
- Retail and wholesale
- Accommodation and food services
What is Principle
Principle is a macOS-based interaction design and animation tool used to create animated UI prototypes and micro-interactions. It targets product designers and UX teams that need to demonstrate flows, transitions, and touch-driven behaviors for web and mobile apps. The product focuses on timeline-based animation, interactive triggers, and rapid previewing on devices rather than full 3D production or general-purpose video editing.
Built for UI interaction prototypes
Principle centers on screen-to-screen flows, animated transitions, and interactive states that map closely to common app design tasks. It supports triggers such as taps, scrolls, and gestures to simulate real interaction behavior. This makes it well-suited for communicating product motion and interaction intent to stakeholders and engineers.
Fast iteration and preview workflow
The tool is designed for quick assembly of artboards, animations, and interactions with immediate playback. Designers can iterate on easing, timing, and transitions without setting up complex rigs or scenes. The workflow aligns with rapid design review cycles where short prototype updates are frequent.
Timeline and easing control
Principle provides timeline-based keyframing and curve/easing controls for motion refinement. This gives designers more precision than basic slide-based animation tools while staying focused on UI motion. It supports creating reusable motion patterns across screens through consistent timing and easing choices.
macOS-only desktop application
Principle runs on macOS, which limits adoption in organizations standardized on Windows. Cross-platform teams may need alternative tools or dedicated Mac hardware for contributors. This can add friction for collaboration and procurement.
Not a full video editor
Principle is oriented to UI animation and interactive prototypes rather than end-to-end video production. It does not replace tools that provide advanced video timelines, audio mixing, color workflows, or broad codec/export pipelines. Teams producing polished marketing videos may need separate video software.
Limited for 3D and VFX
Principle is not designed for 3D modeling, character animation, physics simulation, or high-end rendering workflows. Compared with general 3D creation suites and real-time engines, it offers a narrower feature set focused on 2D interface motion. Projects requiring complex 3D scenes or visual effects typically require other specialized tools.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Single-user license | $129 per computer (one-time) | Full version of Principle; includes all features. Licenses include all new features released within one year of purchase. |
| Renewal (optional) | $99 per computer (renewal, per year) | Renewal grants access to new features for an additional year; you can continue to use the app without renewing but will not receive new features released after the license year. |
Notes: Principle offers a 14-day free trial of the full version (only days actually used are counted). Pricing and renewal details are stated on Principle's official site.
Seller details
Principle for Mac LLC
San Francisco, California, United States
2015
Private
https://principleformac.com/
https://x.com/principleformac
