Side by side

Bootstrap Studio vs Principle

Both stand on web design software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Bootstrap Studio

Paid LinuxMacWindows

Bootstrap Studio combines local visual editing with Bootstrap-based output, offline projects, and several publishing routes. Its tools cover both learning-oriented design and experienced frontend workflows.

Visit Bootstrap Studio

Principle

Free trial iPhoneMacSelf-hosted+1

Principle combines animation controls, interaction prototyping, screen-flow views, imports, sharing, and exports in one tool. Check the one-computer license and renewal terms before choosing it.

Visit Principle

The facts

	Bootstrap Studio	Principle
Free plan	No	A free trial
Open source	Not published	Not published
Runs on	Linux, Mac, Windows	iPhone, Mac, Self-hosted, Web
Lowest paid plan	Standard: $29, paid once	Principle license: $129 per computer, paid once
Plans published	2	2
Maker	Bootstrap Studio	Not published
Website	bootstrapstudio.io	principle.app
On web design software	#34 of 41	#30 of 41

Bootstrap Studio: what it does well

Works fully offline on three desktop platforms
Exports static HTML with local assets
Supports Bootstrap versions 3, 4, and 5
Includes SFTP and hosted publishing
Offers templates, components, and design effects

What to know first

No free plan
AI Assistant unlimited use requires your API key
Standard and Lifetime are listed as paid purchases

Principle: what it does well

Timeline supports custom easing and spring animations
Interactions include dragging, scrolling, taps, and hover
Imports Figma and Sketch designs
Exports HTML, video, or animated GIF
Private browser sharing works across listed platforms

What to know first

Paid product with no free plan
License applies to one computer
New features after year one require renewal
Support replies may take at least a week

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