In short: A genuinely free budget app asks for no account, no bank access and does not quietly charge you through your data or ads. Check five points: really free, usable without login, no forced cloud, ad-free in the app, and suitable for couples. Kontoo meets all five, running locally on your device.
Plenty of budget apps say “free” in the store, yet you often pay anyway — with your data, with ads, or by granting bank-account access the app doesn't really need. If you just want to organise your spending and split a shared budget, it pays to check what an app actually demands before you install it. This page lists five simple questions — explained neutrally — and shows how Kontoo answers them.
Is it really free? Watch for a “free version” that locks after a few weeks, or a subscription that only surfaces after the trial. Truly free means: usable long-term at no cost.
Do you need an account or login? Many apps force registration and an email address. Without an account the barrier stays low and no user profile is built at a provider.
Does the app want bank-account access? It sounds convenient but grants deep data access. For plain budgeting it's enough to enter expenses yourself or import a CSV file.
What happens to your data? Cloud storage means your financial data sits on someone else's servers. Local-first means everything stays on your device and you keep control.
Ads and trackers? Free apps often fund themselves through advertising and usage tracking. Check whether the app itself is ad-free and cookie-free.
Built for couples or a shared flat? If you budget together you need fair splitting — by income, evenly, or a fixed amount — not just a single-person view.
Kontoo meets all five checks: free, no account, no bank access, local-first and ad-free — with fair splitting for couples and shared flats. Try it for free now — nothing to install, no sign-up.
In depth
Why “free” is rarely truly free
Building software costs money, so even a free app has to fund itself somehow. With many free apps this happens indirectly: through advertising, through selling or analysing usage data, or through extra features you have to buy later. That isn't inherently dishonest, but you should know what you are paying with. For finance apps the data question is especially sensitive, because income, spending and savings goals are highly revealing information. The honest question is not just how much the app costs, but what you pay with when no price is shown.
Bank access: convenient, but not required
Apps that connect directly to your bank account feel comfortable because transactions appear automatically. The price is deep access to sensitive account data, often through a third-party service. For the actual goal — an overview of spending and a shared, split budget — that access is not essential. Expenses can also be entered manually or imported as an exported file from online banking. That way control over the bank connection stays with you, and the app needs no permanent link to your bank.
Local-first as the basis for privacy
Local-first means your data lives first and permanently on your own device, not on a provider's server. This lowers the risk of data leaks, keeps you independent of a running cloud service, and fits the privacy mindset well. If you still want to sync across several devices, an end-to-end encrypted sync option serves you better than an open cloud: only your own devices can read the data. What matters is that the app works fully without sync and that syncing stays voluntary.
Education, not advice. How we work and check figures: Editorial. Figures as of 2026, last reviewed 07/04/2026.
Frequently asked questions
Is Kontoo really free?
Yes, Kontoo is free to use. There is no forced trial that locks afterwards, and the app does not fund itself through advertising or by selling your data.
Do I have to register or create an account?
No. Kontoo needs no account and no login. You can start right away without providing an email address or password.
Does the app get access to my bank account?
No, bank access is not required. You enter expenses yourself or import them as a file or CSV from your online banking.
Where is my financial data stored?
Local-first: your data stays on your device and does not automatically go to a cloud. Optionally there is an end-to-end encrypted device sync that only you control.
Does the app contain ads or trackers?
The app itself is ad-free and works without trackers and cookies. It is designed for privacy and is GDPR-friendly.
Is the app suitable for couples and shared flats?
Yes. You can fairly split a shared budget — by income, evenly, or with a fixed amount — and keep pots and savings goals together.
All lessons · Glossary · Editorial · Kontoo does the math and explains – this is general education, not tax, legal or financial advice.
Your data stays with you. Full stop.
Kontoo collects, sees and stores none of your personal financial data – no account, no cloud, everything runs on your device. The free version is funded by ads (Google AdSense, only with your consent); an ad- and tracking-free premium option is planned but not available yet.
No accountNo cloudData on-deviceAds only with consent
