Font Proof – Live Font Editor for macOS

A macOS app that lets designers preview and proof fonts in real-time as they edit. Font designers and type enthusiasts need quick feedback loops; this eliminates the painful export-and-view cycle.

Variable font adoption is accelerating across the industry, and tools like Glyphs App and RoboFont dominate the actual drawing workflow but leave real-time proofing largely underserved — designers still rely on clunky export cycles or browser-based hacks to see their work in context. The closest substitute is FontGoggles, a free viewer that handles live reloading but lacks editing integration, which creates a wedge for something tighter and more polished. At $500–2k/mo, this is a lifestyle business at best, which is fine if it's a focused utility sold as a one-time purchase or low-cost subscription to a small but passionate niche of type designers — that audience pays for good tools. The real risk is market size: there are only tens of thousands of active type designers globally, and a meaningful slice already have cobbled-together workflows they tolerate, making conversion slow and word-of-mouth reach low.