The Seety app is completely free.
For the payment of your parking, there is a transaction fee of 0.25€ per parking session in Brussels and Leuven, which makes it the cheapest app on the market. In Antwerp, Oostende and Charleroi, there are no transaction fees when starting a parking session, the service is free. There is also a transaction fee of 0.15€ per parking session in the Netherlands, which also makes it the cheapest app on the market.