Terms of use – Dlužníček

This is a translation. If it differs from the Czech version, the Czech version applies.

1. Who runs the app

The Dlužníček app (the “app”) is run by Česká IT Akademie, z.s., Preslova 72/25, Smíchov, 150 00 Prague 5, Czech Republic, company ID 17863201, registered in the register of associations kept by the Municipal Court in Prague, file L 77092 (“we”).

Contact: support@czechitacademy.cz.

These terms cover the app and the website dluznicek.czechitacademy.cz. By creating an account or using the app you agree to them.

2. What the app does

Dlužníček keeps track of shared costs in groups, such as a trip, a shared flat or a group of friends. It works out each member’s balance and suggests who should send how much to whom.

Dlužníček is not a payment service or a bank. It doesn’t move, hold or have access to money. The Pay screen only creates a QR code in the Czech QR Platba format (or a Revolut.me link) from the details the recipient entered. You send the payment yourself in your bank, and you and your bank are responsible for it.

Exchange rates come from the Czech National Bank. They are a guide and can be changed in the group. We don’t guarantee that they match the rate you actually paid.

3. Your account

You can sign in with Apple, Google, or an e-mail address and password. Sign-in is handled by Google’s Firebase Authentication. We never see or store your password.
The app is for people aged 15 and over.
One account per person, and you may not pretend to be someone else.
You are responsible for what happens in your account. If you suspect misuse, let us know.

4. Groups and other people’s details

Everything in a group, meaning expenses, notes, receipt photos and the change history, is visible to all members of that group.
You can add people who don’t use the app, by name or nickname. Only do so with their knowledge, and don’t enter more about them than needed.
Notes and photos are not the place for sensitive data such as health information, card numbers or passwords.
A person who joins a group later can take over a name entered earlier, together with its history.
You can leave a group at any time in its settings. The group admin can remove another member’s access. Either way, the name and expenses stay in the group for the balances and history, but they are no longer linked to an account.
You can report inappropriate content or behaviour in a group from its settings (Report a problem) or at support@czechitacademy.cz.

5. Fair use and reported content

Don’t use the app for anything unlawful, to harass others, to spread harmful content or to get around technical limits. Don’t try to break the app’s security, overload the server or access other people’s data. If you break these terms, we may limit or close your account.

Report unlawful or inappropriate content from the group settings (Report a problem) or by email to support@czechitacademy.cz. That address is also our point of contact for users and authorities under the Digital Services Act (DSA); you can write to us in Czech or English. Tell us which group and content it is about and why you think it is a problem.

Reports are reviewed by a person; we don’t use automated moderation. If we remove content or restrict an account, we tell the affected user what we did and why. They can respond at the same address and we will review the decision again. We may stop handling reports that are clearly unfounded and repeated.

6. Free and Premium

The free version has no time limit. Its limits are:

up to 5 active groups per user (archived groups don’t count),
expenses up to CZK 50,000 per group. Once a group reaches the limit, you can’t add new expenses, but you can still settle debts.

Premium is a subscription for CZK 25 a month or CZK 249 a year, VAT included. If App Store prices differ, the price shown in the App Store at purchase applies. Premium:

unlocks one chosen group for all of its members, with no spending limit, with repeat payments and with AI receipt scanning (within fair use, up to 100 scans per group a month),
removes the active group limit for the subscriber,
can be moved to another group at any time.

AI receipt scanning sends the receipt photo to Google Gemini. We only use it once you agree to it in the app. Without your consent, your phone reads the receipt instead.

The subscription is sold and billed by Apple through the App Store under Apple’s terms. It renews automatically until you cancel it in App Store settings at least 24 hours before the period ends. After you cancel, Premium lasts until the end of the paid period. Withdrawal from the purchase and refunds are handled by Apple under its terms at reportaproblem.apple.com.

Invite a friend. If a friend creates a new account through your invite link or code, or through your group invite, and then creates or joins a group, you get 2 months of Premium for free:

you can get the reward only once,
each person can be invited only once, and only within 14 days of creating their account. Your own accounts and made-up accounts don’t count, and we may refuse a reward if the offer is abused,
the reward is a one-time App Store offer code that you redeem in the App Store under Apple’s terms, before it expires. After the free months, the subscription renews automatically as a regular monthly Premium subscription at the current price, unless you cancel it in App Store settings at least 24 hours before the free period ends. The app shows the price and the date before you activate the offer. If you already pay for Premium, your next payment moves back by 2 months,
we may change or end the offer at any time. Rewards already earned stay valid.

What the free version and Premium include may change. We will tell you in advance about any change that makes a subscription you already paid for worse.

7. Loyalty cards

The shop catalogue for loyalty cards contains names and logos that are trademarks of their owners. We use them only so you can recognise a card. We don’t work with these shops and they are not our partners. Shop data comes from OpenStreetMap (© OpenStreetMap contributors, ODbL) and Wikidata.

Only share a card with others where the loyalty programme’s rules allow it.

8. Availability, defects and liability

We run the app with care, but we can’t promise it will always be available or free of errors. We back up data regularly.

If the app or Premium doesn’t work as it should, email support@czechitacademy.cz and describe what’s happening. We will fix the defect within a reasonable time. This doesn’t affect your statutory rights regarding defects under the Czech Civil Code.

Balances and settle-up suggestions are a tool. Check the amount before you send money. We are not liable for damage caused by wrongly entered data, for payments you send or for the service being unavailable, except where liability can’t be excluded by law, in particular for harm to health or for damage caused intentionally or through gross negligence.

9. Closing your account

You can delete your account at any time in the app under Profile → Delete account. What happens to your data is described in the privacy policy. Deleting your account doesn’t cancel an App Store subscription; cancel that separately.

We may close your account if you seriously or repeatedly break these terms. If we ever stop running the app, we will tell you at least 30 days in advance and let you download your data as CSV.

10. Changes to these terms

We may update these terms, for example when we add a feature or the law changes. We will announce material changes in the app or on this website at least 14 days in advance. If you don’t agree, you can delete your account.

11. Apps from the App Store

If you downloaded the app from the App Store, Apple’s standard licence agreement (Licensed Application EULA) applies alongside these terms. Where they conflict, these terms prevail to the extent Apple’s agreement allows. Your agreement about the app is with us, not with Apple. Apple is not responsible for the app, its content or support.

12. Governing law and disputes

These terms are governed by Czech law. If you are a consumer, this doesn’t take away the protection of the law of the country where you normally live.

Consumers can settle a dispute out of court through the Czech Trade Inspection Authority (Česká obchodní inspekce), Štěpánská 567/15, 120 00 Prague 2, www.coi.gov.cz. Please write to us first, though; we sort most things out quickly.