Last updated: 2026-06-21. Plain-language terms for using MarginDeck. Questions: fiveupclub@proton.me.
MarginDeck is a macOS app that helps you estimate per-product contribution profit from costs and revenue you record or connect. It is a decision-support and bookkeeping aid — not accounting, tax, legal, or investment advice. Figures are estimates based on the data you provide.
You are responsible for the accuracy of the data you enter or connect, and for any business decisions you make. MarginDeck does not make decisions for you; it surfaces estimates and signals.
If you connect services such as Stripe or RevenueCat, your use of those services remains governed by their own terms. You authorize MarginDeck to read the data needed to provide the features you enable. See our Privacy Policy.
The product is under active development; features and pricing may change. We may update these terms and will note the date above.
The app is provided "as is", without warranties of any kind. To the maximum extent permitted by law, we are not liable for losses arising from use of the app or reliance on its estimates.