Brush packs for vector illustrators, delivered as ready-to-use files

A vector illustrator sits down to work on a textured editorial piece or a hand-lettering project and immediately hits the same ceiling: the default brushes are clean and geometric, not expressive, and buying individual packs from random designers means format roulette — some load cleanly, some don't, and none are organized the way the artist actually works.

The gap persists because the big vendors (Adobe, Serif) have no real incentive to fix this. Their core customers are print designers and production artists who rarely need expressive brushwork. Illustrators who want Photoshop-quality brush behavior in a vector environment are a vocal minority, not the paying majority. So the defaults stay thin and the import workflow stays clunky.

What's actually missing isn't more brush packs in general — it's packs that are pre-tested to load and behave correctly in specific apps, organized by actual use case (inking, cross-hatching, watercolor edge, grain texture), and packaged so that installation doesn't require reading a forum thread. Users specifically complain that 'learning to add and work with new brushes was not as easy or intuitive as I thought it should be' and that 'artist brushes are limited and cumbersome.' The problem isn't lack of supply on marketplaces — it's that nothing bridges the gap between a raw brush file and a brush that actually works reliably inside a given vector app.

This is a business and not just a content pack because vector apps update, breaking installed brushes, and artists buy new packs for every new project style. The need recurs on a per-project and per-app-update cycle. A buyer who spends 45 minutes troubleshooting a broken brush import before a client deadline will pay real money to never do that again.

What to build

Sell curated, app-specific brush packs (Illustrator .abr/.ai format, Affinity Designer .afbrushes) organized by illustration style — inking, grain, watercolor — with a one-click installer script that places brushes into the correct panel group and validates compatibility against the user's app version.

Where to start

Start with Affinity Designer specifically: it has a smaller, more vocal community, almost no well-organized commercial brush packs compared to Illustrator, and users who switched from Adobe specifically because they dislike paying recurring fees — making a one-time-purchase brush library a natural fit both culturally and commercially.

The hard part

The first version needs enough brushes across enough styles to justify purchase over free alternatives, which means significant up-front production time before any revenue — and you'll need to rebuild or revalidate the entire catalog each time a major app update changes brush rendering behavior.

How it makes money

One-time purchase per pack, with a bundle tier. Optional annual subscription for new packs and app-update compatibility refreshes — roughly $8–15 per standalone pack, $49/year for the subscription.