JKPT:PRTN Official Mob

Designers and developers often lose time guessing whether a type scale will feel right on a real phone screen. A ratio may look correct in theory, but headings, body text, captions, and labels can behave very differently once they are rendered in context, at actual mobile sizes, with real font choices.

This app helps you:

• Build complete type scales from a base size and ratio
• Preview H1 through H6, Body, Caption, and Overline instantly
• Test mathematical ratios such as Minor Third, Perfect Fourth, and Golden Ratio
• Edit preview text to judge hierarchy with real copy
• Review headings, paragraphs, labels, and captions in a realistic composition
• Create font palettes and assign fonts by role
• Import custom .ttf and .otf font files
• Save strong combinations as reusable presets
• Export production-ready CSS, Tailwind, Flutter, SwiftUI, JSON, and PDF specs

Every change updates live, so you can compare how each ratio affects rhythm, spacing, and visual balance. Instead of relying on static charts, you can inspect the scale as readable text and make decisions by feel as well as by measurement.

Custom font import is supported for users who want to preview their own typefaces. Imported fonts stay on your device and can be used in previews, palettes, presets, and supported exports.

When a scale works, save it as a preset so you can return to it later. Presets are useful for client projects, product experiments, brand systems, or repeated interface patterns where consistency matters.

The app is built for focused mobile use. It supports portrait layout, a dark-first visual style, light theme support, clean controls, and a workflow that stays centered on typography instead of account setup or unnecessary complexity.

Free users can calculate scales, preview system fonts, and export useful CSS. Premium features unlock expanded export formats, custom font import, saved presets, typography controls, PDF export, and additional workflow tools through a one-time purchase.