What the tools that build, run or remember a company cost and do, read from their own pages, with the date on every fact. Castan writes it and is one of the tools, so every claim carries its source.
Twelve Polsia alternatives compared: company builders and company-memory tools, with prices read in September 2026, autonomy, and who keeps the code.
Updated 23 September 2026
Polsia costs $20 to $200 a month, plus 3% of customer payments and 20% of ad spend. Plans, fees and three worked examples from the published terms.
Updated 23 September 2026
Polsia builds and runs a company for you. Castan remembers the one you run and asks before anything goes out. Features, prices and ownership, side by side.
Updated 23 September 2026