TERMS & CONDITIONS

By accessing or using C-kata ("the Service"), you accept and agree to be bound by these Terms & Conditions. If you do not agree with any part of these Terms, you must not use the Service.

These Terms apply to your use of c-kata.com, including account registration, access to coding exercises, purchases of CKC digital credits, and use of any paid or free platform functionality.

C-kata is an online educational platform providing coding practice and training in C programming. The Service includes coding exercises, programming challenges, automated task checks, progress tracking, and related educational content.

The Service is provided for educational and training purposes only. It does not constitute professional, legal, academic, employment, certification, or career advice.

4.1. CKC digital credits

The Service uses closed-loop digital credits known as CKC. CKC are used only inside c-kata.com to access paid platform functionality.

CKC are closed-loop digital credits. CKC are not cryptocurrency, are not an investment product, are not tradable, are not transferable between users, are not redeemable for cash or digital assets, and cannot be used outside c-kata.com.

CKC have no monetary value outside the Service and do not function as a payment instrument outside the C-kata platform. CKC may only be used to unlock access to tasks and paid features inside the Service.

CKC cannot be transferred between users, withdrawn, exchanged, resold, converted into cash, converted into digital assets, or shared with any other platform.

4.2. Purchases and pricing

Purchases of CKC are one-time digital-content purchases unless expressly stated otherwise at checkout. C-kata does not charge recurring subscription fees unless a recurring plan is clearly presented and separately accepted by the customer before payment.

The payment page or Order Summary will show the total amount, currency, product description, delivery method, merchant name, and applicable payment method before the customer confirms payment.

Prices for CKC packages may change from time to time. Any price change will not affect purchases that have already been completed.

We reserve the right to modify, suspend, or discontinue any pricing plan, CKC package, promotion, or paid feature, provided that this does not affect CKC digital credits that have already been purchased and delivered, except where required for legal, security, fraud-prevention, or technical reasons.

4.3. Payment processing

Card payments and other supported payment methods are processed by approved third-party payment service providers. TECH HAVEN LIMITED does not store full card numbers, CVV/CVC codes, or sensitive authentication data on its own servers.

Payment data is transmitted through encrypted payment pages or secure payment integrations provided by the payment processor.

4.4. Digital delivery

CKC digital credits are delivered electronically to the customer's C-kata account after successful payment confirmation. Delivery is normally immediate.

In some cases, delivery may take additional time due to bank verification, payment processor checks, technical review, fraud screening, system maintenance, or other operational reasons.

CKC digital credits are not shipped physically and no postal delivery applies.

If CKC digital credits are not delivered after a successful payment, the customer should contact us at [email protected] and provide the account email, transaction date, amount, and payment reference.

4.5. Immediate delivery and cancellation rights

At checkout, you may be asked to request immediate delivery of CKC digital credits to your C-kata account.

By requesting immediate delivery, you acknowledge that CKC are digital content and that, once delivery begins, you may lose your statutory cancellation right, except where a refund is required by law or permitted under our Billing, Refunds & Chargeback Policy.

4.6. Refunds

CKC purchases are digital-content purchases and are generally final once CKC are successfully delivered to the customer's account.

Refunds may be granted only in the circumstances described in our Billing, Refunds & Chargeback Policy, including non-delivery, confirmed technical failure, duplicate billing, billing error, or where required by applicable law.

If CKC digital credits cannot be delivered within a reasonable timeframe after a successful payment, the customer may request cancellation of the purchase and a refund to the original payment method, subject to our Billing, Refunds & Chargeback Policy and applicable law.

4.7. Account closure and unused CKC

CKC digital credits do not expire while the user account remains active.

If a user voluntarily deletes their account, any unused CKC balance is permanently removed together with the account data, progress, and history. Unused CKC cannot be transferred to another user, withdrawn, converted into cash, exchanged for digital assets, or moved to any other platform.

If an account is suspended or terminated due to a violation of these Terms, access to the remaining CKC balance may also be terminated in accordance with these Terms. Refunds are available only where required by applicable law or in the circumstances described in our Billing, Refunds & Chargeback Policy.

You agree not to:

6.1. General ownership

The Service, including its platform design, software, interface, branding, structure, proprietary learning materials, and related functionality, is owned or licensed by TECH HAVEN LIMITED and is protected by copyright, trademark, database, and other intellectual property laws.

You may not reproduce, distribute, sell, sublicense, publicly display, copy, modify, reverse engineer, or create derivative works of our proprietary content or platform functionality without our express written permission, except where permitted by applicable law.

6.2. User-created code

You retain ownership of code or content that you create while using the Service.

By using the Service, you grant TECH HAVEN LIMITED a limited licence to store, process, display, and execute your code where necessary to provide the Service, including task checking, progress tracking, account functionality, and technical support.

We do not claim ownership of your source code beyond what is necessary to operate and improve the Service.

6.3. Open-source materials

TECH HAVEN LIMITED internally operates and commercially manages c-kata.com.

Where open-source materials are used, they are used under the applicable open-source licence, with attribution preserved. Certain C programming exercises and educational materials may be derived or adapted from Exercism open-source materials under the MIT License.

No third-party supplier contract is required for Exercism-derived MIT-licensed materials. These materials are used under the applicable open-source licence basis.

6.4. Exercism attribution and non-affiliation

Certain coding exercises and materials available through the Service may be derived or adapted from Exercism open-source repositories: https://github.com/exercism.

These specific materials are distributed under the MIT License. Copyright (c) Exercism. In accordance with the MIT License terms, the original copyright notice is preserved where applicable. These materials may have been modified for the purposes of C-kata and are provided "as is" without warranty of any kind.

C-kata is operated independently by TECH HAVEN LIMITED and is not affiliated with, sponsored by, or endorsed by Exercism. A copy of the MIT License can be accessed at: https://opensource.org/licenses/MIT.

You are responsible for any code, text, files, or other content that you create, submit, or upload while using the Service.

You must not submit content that is unlawful, harmful, infringing, malicious, abusive, or designed to interfere with the operation of the Service.

We may remove or restrict access to user-generated content where we reasonably believe it violates these Terms, applicable law, intellectual property rights, security requirements, or the rights of another person.

We reserve the right to suspend or terminate your account at any time if you violate these Terms, misuse the Service, engage in fraud or abuse, create security risks, or use the Service in a way that may harm TECH HAVEN LIMITED, the Service, other users, payment providers, or third parties.

You may delete your account at any time through your account settings, where this functionality is available, or by contacting support.

Upon termination or account deletion, your right to use the Service will immediately cease. Your account data, progress, history, and unused CKC digital credits may be deleted or made inaccessible, subject to applicable law and our Privacy Policy.

The Service is provided "as is" and "as available" without warranties of any kind, whether express or implied, to the maximum extent permitted by law.

We do not guarantee that the Service will be uninterrupted, secure, error-free, or available at all times.

We do not guarantee any specific learning outcome, programming result, professional result, employment result, certification result, or academic result from using the Service.

The Service may include errors, incomplete materials, technical issues, or temporary interruptions.

Nothing in these Terms excludes or limits liability that cannot be excluded or limited under applicable law.

To the maximum extent permitted by law, TECH HAVEN LIMITED shall not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, including loss of profits, loss of data, loss of goodwill, business interruption, or loss arising from your use of or inability to use the Service.

To the maximum extent permitted by law, our total liability for any claim arising out of or relating to the Service shall not exceed the amount you paid to TECH HAVEN LIMITED for the Service in the 12 months preceding the claim.

Nothing in these Terms excludes or limits liability for fraud, fraudulent misrepresentation, death or personal injury caused by negligence, or any other liability that cannot be excluded under applicable law.

You agree to indemnify and hold harmless TECH HAVEN LIMITED, C-kata, and their officers, directors, employees, contractors, service providers, and affiliates from and against any claims, damages, losses, liabilities, costs, and expenses arising from your use of the Service, your violation of these Terms, your misuse of CKC digital credits, your violation of applicable law, or your infringement of third-party rights.

We reserve the right to modify these Terms at any time.

We will notify users of material changes by email, through the Service, or by updating the "Last updated" date at the top of this page.

Your continued use of the Service after changes become effective constitutes acceptance of the updated Terms.

If you do not agree with the updated Terms, you must stop using the Service.

TECH HAVEN LIMITED operates separate educational programming platforms, including c-kata.com, c-magus.com, and csharpexplore.com. Each platform has its own product scope, internal credits, pricing, customer account, checkout flow, and payment processing arrangement.

Credits purchased on one platform are not transferable to another platform.

C++ Magus, CSharpExplore, and C-kata are independent tools operated by TECH HAVEN LIMITED. Each platform provides its own services and processes payments separately.

User balances and credits are not shared between platforms.

Links to other platforms in the ecosystem are provided for navigation purposes only. Purchases, credits, balances, progress, user accounts, and customer journeys are managed separately on each platform.

These Terms shall be governed by and construed in accordance with the laws of England and Wales.

Any disputes arising out of or relating to these Terms or the Service shall be subject to the exclusive jurisdiction of the courts of England and Wales, except where applicable consumer protection laws provide otherwise.

For questions about these Terms, please contact us:

TECH HAVEN LIMITED

72 Halliwick Road, London, N10 1AB, United Kingdom