GemBudget is a tool to take your budget under control. You can easily track your balances, add new transactions and control your expenses.
The market for personal budget apps is over saturated and there are already some nice ones that are either free or very cheap. For example, I use an app on my phone that cost me 5 € (one time payment), works offline, syncs with google drive, exports to excel format, looks great, supports multiple accounts and has a calendar view.
With that taken into account, I cannot understand why someone would pay 3€ every month to use your product which is web based and has a limited set of features.
No better than a spreadsheet, overpriced, there are better alternatives