Last updated 2026-10-30

Terms of use

Klingel.app is run by mixed.world GmbH. These terms are short on purpose: they say what we promise, what we do not, and who answers for what. You accept them by setting up a code or by using the service.

What it is

A code is an address you hand out. It gets a link, and the link can be printed as a QR code on a sticker or a card. Whoever opens it can ring the phones on that code — by voice, by video or in writing — and leave a message if nobody answers. No phone numbers are shown to anyone, and there are no accounts. That is the whole service.

It cannot call for help

Klingel.app is a number-independent communications service. It does not dial phone numbers, and it cannot reach emergency services, under any number, in any country. It is no substitute for one. We are required to tell you this clearly (§ 164 TKG), and we would tell you anyway. Keep something nearby that can call for help in emergencies.

Links belong to us

A link and the name in it are allocated to you, not sold; they remain ours. We may deactivate, withdraw or reassign a link when there is good reason to: a credible report, a breach of these terms, an order from a court or an authority, a code nobody has used for a long time, or a name somebody else plainly has the right to. We tell you when we do it and why, unless the law stops us.

We may also end a free code with 30 days' notice, and we do not have to give a reason for that. You keep the 30 days to move whoever rings you to a new code.

The service may change or stop

We may change, restrict or discontinue parts of the service where we have good reason — safety, abuse, cost, the law, or something technical — and where the change is reasonable for you. So that you know what we mean: taking video out, limiting how long a call runs, limiting how many calls a link takes in a day, or retiring a feature almost nobody uses.

We do not promise any particular availability, and we do not promise that a code will work tomorrow. We give no guarantee unless we write one down and call it a guarantee.

If you pay: a change like that does not silently take away what you bought. If we remove something Klingel Plus was holding open for you, you may cancel the subscription in the store that sold it — your Apple account or Google Play — and ask that store to refund the rest of the term; we will back that request. Until the term ends, the codes your subscription keeps active stay active.

Your side

Do not use Klingel.app to harass, threaten or deceive anybody, to send calls in bulk, to imitate another person or organisation, or for anything unlawful. You are responsible for the name you give a code, for the picture and the words you put on it, for where you hang a code, and for any message you leave on somebody else's code. Ask first before you put another person's name, face or brand on a code.

If somebody brings a claim against us because of what you did here, you hold us free of that claim and of the reasonable cost of defending it. That does not apply where the breach was not your fault. We will tell you about such a claim and let you help defend it.

What other people put here

The codes, their names, their pictures and the messages left on them are made by the people who use the service, not by us. We do not monitor them and we do not know what is said: a call runs directly between the two devices and we only pass the connection through (Art. 4 DSA); a name, a picture or a message we store for the person who put it there (Art. 6 DSA). Either way we are not liable for other people's content while we do not know it is unlawful — and once we are told, we act.

Tell us at impressum@mixed.world and include the link. That is the notice procedure under Art. 16 DSA, and the imprint says how it runs and who handles it. In the app, a message can be reported in two taps. When we take something down we say why, as far as Art. 17 DSA asks us to. We may remove content, or make a code quiet, when a report, these terms or the law gives us reason to.

Purchases

Klingel Plus is sold by the store the app came from — Apple's App Store on an iPhone, Google Play on an Android phone — and not by us. For the purchase itself that store is your contracting party: it takes the money, it issues the receipt, and the right to withdraw, any refund and any billing question go through it and its terms. Ask in your Apple account or at reportaproblem.apple.com; on Android, in Google Play under Subscriptions, or at play.google.com. A subscription renews until you cancel it there. We cannot cancel it, bill it or refund it for you.

What we do is run the service that the purchase unlocks, and for that the rest of these terms applies. We see that a purchase exists and what it is worth. We never see your name, your address or your card.

What we are liable for

We are liable without limit for injury to life, body or health, for intent and gross negligence, under the Produkthaftungsgesetz, for anything we fraudulently conceal, and for any guarantee we have expressly given.

Apart from that, we are liable for slight negligence only where we break a duty this agreement cannot work without and that you may rely on us keeping. In that case we are liable for the damage that is typical for an agreement of this kind and was foreseeable when it was made.

For slight negligence in anything else we are not liable.

The same limits apply to the people who work for us and to anyone we bring in to run the service. None of this changes who has to prove what.

Law and courts

German law applies. If you are a consumer, that does not take away the protection given to you by rules of your country of residence that cannot be agreed away (Art. 6 Rome I).

If you are a merchant, a legal person under public law or a special fund under public law, the courts of Berlin have jurisdiction. If you are a consumer we cannot choose a court for you: you may sue us where you live, and we have to sue you there (Art. 17–19 Brussels Ia).

We do not take part in consumer dispute resolution proceedings before a consumer arbitration board (§ 36 VSBG). The EU's ODR platform was shut down on 20 July 2025, so there is nothing left to link to.

Changes

We may change these terms when there is a reason to: the service changes, or the law does. If a change matters to you, we say so in the app before it takes effect, and you can stop using the service and delete your code. The current version is the one published here, with its date at the top.

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