Frequently Asked Questions
Answers to the most common questions about TopicDrill.
Are the tools really free?+
Yes. Every calculator and tool on TopicDrill is 100% free with no sign-up required.
Do I need to create an account?+
No account is needed to use any calculator. Accounts are only used by our content team.
Is my data safe?+
Most calculators run entirely in your browser, so the numbers you enter are never sent to our servers.
How accurate are the calculators?+
We use standard financial formulas, but results are estimates. Always verify important figures and consult a professional.
Do the tools work for my country?+
Universal tools (loans, mortgage, compound interest, percentages) work anywhere. Some tax and retirement tools are region-specific.
Can I suggest a new tool?+
Absolutely — send us your idea via the contact page and we'll consider adding it.