Local-first Apple apps

Meet StoryChat AI

StoryChat AI turns rough thoughts, notes, and conversations into polished social post cards—entirely on your iPhone or iPad. No account, ads, analytics, or cloud AI.

Explore StoryChat AI Request Launch Updates

Preparing for release on the U.S. App Store. Private conversations and card generation stay on your device.

About Bison Brush LLC

We build focused Apple-platform apps with clear utility, strong product polish, and careful attention to privacy, performance, and usability.

On-Device AI

StoryChat AI is designed around private, on-device drafting so users can shape ideas into post-ready images directly on their own Apple devices.

Native Apple Experience

We ship native interfaces for iPhone and iPad, tuned for the strengths of each device category.

Privacy and Reliability

We prioritize practical tools that feel trustworthy, responsive, and easy to understand in everyday use.

Featured Apps

Explore the Bison Brush lineup across productivity, education, and local-first AI tools.

Coming to the App Store

StoryChat AI

Chat privately, turn rough thoughts into polished post cards, then edit, save, export, and share your work. Three free post-card generations are included.

Social Post Drafts On-Device iPhone + iPad

Learn More

$Math Sheet Prints App Icon$

Available now

Math Sheet Prints

Create and print custom math worksheets for students. Perfect for teachers, parents, and tutors who need quick access to practice problems.

Education Productivity iOS

Learn More

Get In Touch

Questions about StoryChat AI, Math Sheet Prints, or future Bison Brush releases? We'd love to hear from you.

[email protected]

Need Support?

Need help with one of our apps, want an update on StoryChat AI, or have product feedback to share?

Email Support

Reach Bison Brush directly for support, launch questions, and app feedback.

[email protected]