# Principle

> Create interactive UI prototypes with timeline-based animations

- **Canonical URI:** https://www.vioscale.ai/software/principle
- **Category:** Mockup Tools
- **Homepage:** https://principleformac.com
- **Also known as:** principle
- **Profile claimed by vendor:** no
- **Last updated:** 2026-09-01T14:59:10.301Z

## Vioscale score

**46.1 / 100**, confidence 37% (low). Computed 2026-09-01.

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| price_level | 25 | 0.052 | 1.3 | ✓ |
| reliability | 0 | 0.073 | 0 | - |
| capabilities | 45.8 | 0.04877777777777778 | 2.2 | ✓ |
| integrations | 13.7 | 0.04066666666666666 | 0.6 | ✓ |
| security_posture | 0 | 0.073 | 0 | - |
| pricing_transparency | 75 | 0.084 | 6.3 | ✓ |

## Pricing

_As of 2026-09-01, [verify at source](https://principleformac.com/pricing.html). Independently observed._

from $129 · Perpetual licence

> $129 per computer. Renewal available for $99 to access new features released after initial purchase.

| Plan | Price | Free | Commitment |
|---|---|:--:|---|
| Principle License | $129 per computer, perpetual license | - | min 1 seats |

### Principle License

Single license per computer with one year of new feature access

- Timeline animation with keyframes and easing customization
- Multi-artboard screen flow design
- Automatic animations between named layers on different artboards
- Hover and mouse wheel event support
- Import from Figma and Sketch with intelligent merging
- Web-based sharing and preview
- Video export functionality
- One year of new feature access included

### Add-ons

- **License Renewal** ($99 one-time)

## About

A native macOS application for designing animated and interactive user interfaces across web, mobile, and desktop platforms, featuring keyframe-based animation controls and automatic transitions between artboards.

_Independently observed._

## Platform & deployment

- **Platforms:** macOS

## Integrations (2)

_Independently observed._

- Figma — design (native, inbound)
- Sketch — design (native, inbound)

## Capabilities

_The capabilities that matter for Mockup Tools. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Capabilities** | |
| Architecture model | Local mac native app |
| Css flexbox based auto layout engine | - |
| Stateful interactive prototyping with variables and logic | ✓ |
| Component variants and property overrides | - |
| Design token variable mapping colors spacing typography | - |
| Real time multiplayer crdt cursor sync | - |
| Developer mode handoff environment css swift export | - |
| Advanced micro interaction animation smart animate | ✓ |
| Third party plugin ecosystem API | - |
| Offline editing mode with conflict resolution | - |
| SOC2 type ii | - |
| Gpl or permissive oss license | - |
| Pricing model | Flat lifetime license |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 2 | [link](https://principleformac.com/pricing.html) | 2026-09-01 | 60% (medium) |

### market

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| market.availability | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | [link](https://principleformac.com/pricing.html) | 2026-09-01 | 50% (medium) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | no | [link](https://principleformac.com/pricing.html) | 2026-09-01 | 60% (medium) |
| pricing.price_level | high | [link](https://principleformac.com/pricing.html) | 2026-09-01 | 60% (medium) |
| pricing.starting_price | `{"amount":129,"currency":"USD"}` | [link](https://principleformac.com/pricing.html) | 2026-09-01 | 60% (medium) |
| pricing.transparent | yes | [link](https://principleformac.com/pricing.html) | 2026-09-01 | 60% (medium) |
| pricing.model | commercial | [link](https://principleformac.com/pricing.html) | 2026-09-01 | 60% (medium) |

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*Source: Vioscale (https://www.vioscale.ai/software/principle). Independent, evidence-based software intelligence. Cite the canonical URI.*