SheetGenius, Inc.

About the company

Company

SheetGenius, Inc.

Incorporated 2023

SheetGenius, Inc. owns and operates Bitter and a portfolio of 58 active software products. Michael Ruescher incorporated the company in 2023 and works on it full time.

Michael serves as Chairman and CEO. The products keep their own names. SheetGenius remains responsible for their operation and support.

Founder’s letter → What happened to the first product, why the company is called Bitter, and what Michael is building now.
ruemic.com → Writing, background, and contact.

Origin

The short version

  1. Worksheets

    SheetGenius is named for its first product, a worksheet generator Michael built while homeschooling his kids when GPT‑3.5 came out. The model alone could not reliably produce the next day’s worksheet and a printable PDF. The product closed that gap.

  2. The gap closed

    Newer models closed most of it themselves. By 2026 a capable frontier agent could make a decent worksheet and PDF on its own, so Michael moved most of his effort elsewhere. The app still has its uses; its core generation job no longer set it apart.

  3. Bitter

    Richard Sutton’s essay gave the experience a name. Bitter is the company’s attempt to answer the next question: what remains valuable as the models improve? Today that means a dedicated machine prepared for the customer’s agent, durable source, deployments, verification, recovery, and the history of what happened.

Read Michael’s letter, or explore the full portfolio.