Which system of accounting for finances in the company, which one to choose?

Question

Fintech

The task was to keep records of finances in the company. 2 people (manager and director) + 1 observer (founder) are directly involved in financial transactions every day.
The task is such that any of the participants must contribute income and expenses, but not all of them can see the expenses.
It turned out to be the closest to the Drebedenga task when I paid for them, but alas, there is no way to set up the visibility of spending.
Suggest other possible solutions. Thanks in advance!

Answer 1

I can offer a completely free solution:
google.drive has a form functionality.
The form is essentially a set of questions, the answers to which are automatically saved in a regular table in google.drive, on which you can then build any graphs, etc., etc.
Accordingly, you make a form in the style of "Who spent", "Amount", "For what".
Give access to the form to everyone who can enter expenses / incomes
Give access to the final table to everyone who can view expenses / incomes
Everyone :)
PS
For a startup of two and a half people, 1c is somehow very harsh.

Answer 2

I may seem like an idiot, but 1s, no? I understand that this may be a taboo or "cursed word" in startup environments.

Answer 3

You might call me old-fashioned, but what's wrong with regular excel?