These terms cover buying and using WonderGerman programs, and the rules for the app, especially the course chats and direct messages.
Last updated: 18 October 2026
The WonderGerman app and the website wondergerman.co are provided by:
MANIFESTA WW, Kristina Čulić Gajić s.p.
Sime Miljuša 72
78000 Banja Luka
Bosnia and Herzegovina
JIB: 4512102040002
Email: support@wondergerman.co
These terms apply to everyone who uses the app, in particular its course chats and direct messages. How we handle personal data is explained in our privacy policy.
You must be at least 16 years old to use the app. If you are under 18, a parent or guardian must agree. You confirm your age when you register, or the first time you sign in to an account created for you.
You accept these terms when you register or, if your account was created earlier or on your behalf, before your first post or voice message in a chat.
Please use accurate details, keep your password to yourself and don’t let anyone else use your account. Each account is for one person.
The first lesson is open to everyone after registering. Full access to a course comes with a program; see Prices. Kristina can also grant access herself, for example to participants of her other courses. The Android app contains no purchases.
Programs are sold by MANIFESTA WW, Kristina Čulić Gajić s.p. (see section 1), from 1 January 2027, in the web app at app.wondergerman.co. You must be at least 18 years old to order.
To order, you select a program, confirm that you are 18 or older, give the consents described in our withdrawal information, and choose PayPal or bank transfer. With PayPal, the PayPal window only authorises the payment; your binding order is placed with the button “Place order with obligation to pay” in the app. With bank transfer, your order is likewise binding when you press this button, and you then receive the transfer details and a payment reference. You receive an order confirmation and invoice by email, with these terms and the withdrawal information attached as a PDF.
The prices shown on our pricing page and in the app apply. They are the same in every country and include VAT where applicable. All prices and payments are in euros.
Your access is unlocked as soon as your payment is received: with PayPal immediately, with a bank transfer when the money arrives, usually within 1-3 business days. If a bank-transfer order is not paid within 14 days, we may cancel it.
1. Access to the digital course content is in principle granted to the customer for as long as the platform is operated.
2. Independently of this, the seller guarantees the customer a minimum access period of 24 months from the conclusion of the contract.
3. The seller reserves the right to discontinue operation of the platform, and thus access to the content, after the guaranteed minimum access period of 24 months has expired, for an important business, technical or personal reason.
4. Such a complete discontinuation of the platform will be announced to the customer at least 3 months in advance, by email to the address stored in the customer account.
Premium and the upgrade include 12 one-to-one lessons with Kristina via Zoom, 45 minutes each. Lessons are booked in the app at least 24 hours in advance and can be cancelled free of charge up to 24 hours before. Lessons cancelled later, and lessons missed, count as used.
As a consumer, you have a statutory right of withdrawal. For the course, it ends once your access begins, because you expressly agree to this at checkout; for the one-to-one lessons, you can withdraw until all lessons have been given. All details, and the model withdrawal form, are in our withdrawal information.
The lesson portion is the difference between the Premium price and the Self-Study price at the time of purchase (for the upgrade: the upgrade’s price). In the event of an early withdrawal, one twelfth of the lesson portion is deducted from the refund amount for each scheduled or completed 1:1 lesson, capped at the full lesson portion. If a discount was applied, the lesson portion and the rate per lesson are reduced in the same proportion as the price. Example: with a Premium price of €799 and a Self-Study price of €99, the lesson portion is €700 and the deduction is €58.33 per lesson.
After an early withdrawal from the lessons, access to the course continues as Self-Study. Any other refund ends access to the refunded program, and so does a chargeback.
Only one discount code can be used per order. Codes cannot be combined, have no cash value and apply under the conditions stated with the code.
We reserve the right to continuously update, modify, and improve the digital content to enhance pedagogical quality, update the curriculum, or adapt to technical developments, provided such changes do not incur additional costs for the user.
The course chats are a shared learning space. Please be respectful and helpful; mistakes are part of learning. The following are not allowed in group chats, direct messages, display names or uploads:
Messages in a course’s group chat are visible to everyone with access to that course.
You can report:
Then pick a reason: Belästigung oder Beleidigung (harassment or insults), Unangemessener Inhalt (inappropriate content), Spam or Sonstiges (other).
Only Kristina can read reports. She is notified straight away and either deletes the reported message, which then shows as “Nachricht gelöscht” for everyone and has any attached file deleted, or dismisses the report. Once she has dealt with it, the report is deleted; reports about the same message are closed together. If a direct message is reported, she sees only that one message, never the rest of the conversation.
You can block another student: tap their name in the chat, or use the menu in a direct conversation. Then:
You can unblock someone at any time under Profil → Blockierte Personen.
Kristina moderates the course chats and can delete any message in a group chat. If someone breaks these rules, she can delete their messages and, for serious or repeated breaches, remove their access to the course, which also removes them from its chat. Where the law requires it, illegal content is reported to the competent authorities.
Kristina cannot be blocked or reported in the app, because she runs the course and handles reports. If you have a complaint about the course, about Kristina or about how a report was handled, write to support@wondergerman.co.
What you post remains yours. By posting it, you allow it to be shown to the people with access to that chat for as long as it stays there. Only post content you have the right to share.
Lessons, exercises, videos and audio in the app are protected by copyright, including materials licensed from publishers. They are for your personal learning only; please don’t copy, record or share them outside the app.
You can delete your account at any time, in the app or by email; see Delete account. Kristina can end an account’s access in case of serious breaches of these terms.
We update these terms when the app changes. If a change is significant, we will tell you in the app, and you may be asked to accept the new version before you post again.
We are liable without limitation for damage caused intentionally or through gross negligence, for injury to life, body or health, and wherever mandatory law provides for liability. For slight negligence, we are liable only for breaches of essential contractual obligations, limited to the damage that is typical and foreseeable for this kind of contract.
We work to keep the app available at all times, but short interruptions, for example for maintenance or updates, cannot always be avoided.
These terms are governed by the law of Bosnia and Herzegovina. If you use the app as a consumer in the European Union, the mandatory consumer protection rules of the country where you live remain unaffected.
We are neither obliged nor willing to take part in dispute resolution proceedings before a consumer arbitration board. If you have a complaint, please write to us at support@wondergerman.co, and we will look for a solution together with you.
Questions about these terms? Email support@wondergerman.co.