Public tools for frontend, accessibility, practical workflows, and conversion flow review.

Sola Studio publishes practical tools for frontend work, accessibility checks, structured practice, and focused conversion flow review. These are live public tools and apps designed for real use, not internal demos or portfolio samples.

Open-source toolLive / Open source

Contrastly

Open-source Tailwind Color Contrast Checker

A practical contrast checker for Tailwind CSS palettes, custom hex values, and semantic color token decisions.

Purpose

For checking WCAG AA / AAA contrast results quickly during UI color and token decisions.

Who it is for

Frontend developers, designers, accessibility reviewers, and teams working with Tailwind CSS or semantic color systems.

Highlights

Checks WCAG AA / AAA contrast results for Tailwind colors and custom hex values
Supports semantic foreground and background color token decisions
Designed with semantic HTML, keyboard interaction, reduced-motion support, and screen reader-aware UI patterns
Available as an open-source tool from Sola Studio

Open SourceWeb AccessibilityTailwind CSSWCAGFrontend

Open tool Source code

Business toolLive / Free tool

Conversion Leak Estimator

Free estimator for conversion flow friction

A free estimator for putting a rough number on possible missed opportunity caused by friction on an existing page or conversion flow.

Purpose

For making a conversion flow issue easier to size, explain internally, and discuss before deeper review.

Who it is for

Product and marketing teams working with existing pages, forms, or conversion flows who want a focused way to assess one existing flow.

Highlights

Shows a rough estimate using your own assumptions
Makes a vague issue easier to frame and discuss internally
Designed for existing pages, forms, and conversion flows
Can be used before Friction Review Report

Free ToolConversion FrictionConversion FlowRough EstimateBusiness Tool

Open tool

Public toolLive app

Promotee

Interview Flashcard Practice App

A public practice app for structured interview-answer practice with prompt-based flashcards and spoken-response use.

Purpose

For practicing interview answers more clearly and consistently through a simple repeatable flow.

Who it is for

Job seekers, non-native English speakers, career changers, and users who want a straightforward way to practice answers out loud.

Highlights

Supports spoken interview practice with prompt-based flashcards
Designed for calm, repeatable practice sessions
Includes accessibility-aware UI such as keyboard support, motion control, and screen reader considerations
Available as a live public app

Practice ToolInterview PracticeAccessibility-aware UIKeyboard SupportPublic App

Open tool Notes

Public tools for frontend, accessibility, practical workflows, and conversion flow review.

Open-source toolLive / Open source

Contrastly

Open-source Tailwind Color Contrast Checker

A practical contrast checker for Tailwind CSS palettes, custom hex values, and semantic color token decisions.

Purpose

For checking WCAG AA / AAA contrast results quickly during UI color and token decisions.

Who it is for

Frontend developers, designers, accessibility reviewers, and teams working with Tailwind CSS or semantic color systems.

Highlights

Checks WCAG AA / AAA contrast results for Tailwind colors and custom hex values
Supports semantic foreground and background color token decisions
Designed with semantic HTML, keyboard interaction, reduced-motion support, and screen reader-aware UI patterns
Available as an open-source tool from Sola Studio

Open SourceWeb AccessibilityTailwind CSSWCAGFrontend

Open tool Source code

Business toolLive / Free tool

Conversion Leak Estimator

Free estimator for conversion flow friction

A free estimator for putting a rough number on possible missed opportunity caused by friction on an existing page or conversion flow.

Purpose

For making a conversion flow issue easier to size, explain internally, and discuss before deeper review.

Who it is for

Product and marketing teams working with existing pages, forms, or conversion flows who want a focused way to assess one existing flow.

Highlights

Shows a rough estimate using your own assumptions
Makes a vague issue easier to frame and discuss internally
Designed for existing pages, forms, and conversion flows
Can be used before Friction Review Report

Free ToolConversion FrictionConversion FlowRough EstimateBusiness Tool

Open tool

Public toolLive app

Promotee

Interview Flashcard Practice App

A public practice app for structured interview-answer practice with prompt-based flashcards and spoken-response use.

Purpose

For practicing interview answers more clearly and consistently through a simple repeatable flow.

Who it is for

Job seekers, non-native English speakers, career changers, and users who want a straightforward way to practice answers out loud.

Highlights

Supports spoken interview practice with prompt-based flashcards
Designed for calm, repeatable practice sessions
Includes accessibility-aware UI such as keyboard support, motion control, and screen reader considerations
Available as a live public app

Practice ToolInterview PracticeAccessibility-aware UIKeyboard SupportPublic App

Open tool Notes