# Protaxis — Typography Lab

> Typography Lab (iPhone/iPad app by yu kawase.)

- Source: https://appshunter.io/ios/app/protaxis/id6757671080 (this page in markdown: same URL + `.md`)
- Developer: [yu kawase](https://appshunter.io/developer/530948786)
- Category: Graphics & Design, Developer Tools
- Price: Free
- Age rating: 4+
- Requires: iOS 26.0 · 6 MB
- Languages: American English
- Released: 2026-01-13
- Data updated: 2026-02-23
- User reviews in markdown: https://appshunter.io/ios/app/protaxis/id6757671080/reviews.md

## What is Protaxis?

Design your app’s typography in real time.

This app is a font playground for app developers.
Try different fonts, adjust font size, line spacing, and kerning with simple gestures, and see exactly how your text looks on a real device — including Dark Mode.

Instead of guessing values or going back and forth with design tools, you can fine-tune everything directly on screen and export ready-to-use SwiftUI code.

What you can do
• Browse and preview system and custom fonts
• Adjust font size, line spacing, and kerning by tapping and dragging
• See changes instantly in Light and Dark Mode
• Copy or share SwiftUI code for your typography
• Reset and compare different settings easily

Whether you’re designing a reading app, a note app, or any text-heavy UI, this tool helps you find the perfect typography faster and with more confidence.

Design it. Test it. Ship it.


## Version history (last 2 releases)

### 1.0.1 — 2026-01-15

Minor UI adjustments

### 1.0.0 — 2026-01-14

No release notes.

## More apps by yu kawase

- [Savage (Simple Shelf App)](https://appshunter.io/ios/app/savage-simple-shelf-app/id1496502686)
- [Savage Mark](https://appshunter.io/ios/app/savage-mark/id6742744713)
- [Savage Note](https://appshunter.io/ios/app/savage-note/id6743932083)

All apps by yu kawase: https://appshunter.io/developer/530948786

## Related topics

[protaxis](https://appshunter.io/ios/topics/protaxis)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-02-23.*