Local decision engines
Mentat Ledger turns difficult financial questions into private, inspectable products that run locally. No subscription dashboard. No hidden advice layer. Just a decision engine you own.
One design philosophy
Your working data stays in the product and in files you choose to create.
The engine explains the rules, thresholds and scenario mechanics behind its output.
Each product starts with the decision, the first pressure point and the practical lever.
A guided transfer file moves your complete data into future product versions without a cloud account.
The product line
Compass handles long-horizon personal wealth. Horizon handles the next 13 weeks of business cash. Both are self-contained local HTML products.
Plan for one person or two without averaging away ownership, liquidity or individual timing. Compare the next euro and preserve the conclusion in a clean snapshot.
€89 one-time · no subscription
Translate known cash events into a 13-week path. See the first watch week, the protection amount and the order of levers across Stress, Plan and Upside.
€149 one-time · no subscription
Both products
If you run the business, both questions are yours. Bought together they are €199 instead of €238 — two separate local products, one purchase.
