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Published
May 13, 2025
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This is how we built an AI tool that answers questions about your personal finances

Grassfeld recently introduced a unique feature for managing your personal finances: Grassfeld Intelligence. Every user of the app now has access to this AI tool, which provides answers to questions based on your personal financial data. An explanation of how we built Grassfeld Intelligence.

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The Grassfeld app has been used by many for years to manage their personalfinances. The app can be linked to multiple bank accounts, allowing you to keeptrack of all your spending, budgets, and savings goals in one place. This provides more overview and control over your finances.

Clear, personal explanation

“To make the interpretation of all financial data easier for app users, we decided years ago to start building an AI tool,” says Grassfeld founder Mo Radjab.“A tool that can answer questions in plain language based on someone's ownfinances.”

And we succeeded. Grassfeld Intelligence is now live and can answer questions such as: How much did I spend on groceries this month? Am I on track for my savings goal? Can I afford a car worth 25,000 euros?

The underlying system

“Many companies looking to add AI to their product think of a chat window,” says Remko Brenters, Chief Technology Officer at Grassfeld. “That is only the exterior. Behind the chat window lies an entire system that must have very strict boundaries and must be slowed down in time if it threatens to cross aline.”

Grassfeld has worked on that system for years. Brenters: “Such a system only works if you clearly define what the model can and can not do. Otherwise, you just get confident nonsense. For example, Grassfeld Intelligence does not give you investment advice, tax advice, or market predictions. And, of course, it does not invent figures.”

Woman sitting in a room, looking at her phone screen, surrounded by Grassfeld app interface elements

Conversations only visible to the user

Furthermore, questions and answers are only visible to the user. “It is impossible forsomeone to see another user's data, not even by giving clever prompts or through a bug inthe system,” Brenters explains. “At the same time, we have built such a strong securitymechanism that a user cannot secretly make the system perform all kinds of forbiddenactions.”

Standard feature

Grassfeld Intelligence is a standard feature in the Grassfeld app. No additional costs arecharged, and the feature is available for all subscription plans. Download the Grassfeld appnow and discover for yourself how Grassfeld Intelligence works

Grassfeld Intelligence introduction screen on the Grassfeld mobile app

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