Kata

Terms of Service

Last updated: October 24, 2026

1. Scope and Provider

These Terms of Service govern your use of Kata, the language-learning service of Techsign Solutions GmbH, Aeschengraben 29, 4051 Basel, Switzerland ("we", "us"), through the Kata iOS app, the web app at app.kata-languages.com, the website kata-languages.com and the Chrome extension (together, the "Service"). We provide the Service. Kata Pro subscriptions are sold in the web app by Paddle and in the App Store by Apple (see section 4). By creating an account or using the Service, you agree to these Terms. If you do not agree, do not use the Service.

2. Description of Service

Kata helps you learn the vocabulary of another language: you build your own word lists or import ready-made word packages, review them with flashcards on a spaced-repetition schedule, practise with drills (for example on grammatical gender and plurals) and listen to your words. Your learning data is stored in your account and synced between the iOS app and the web app.

3. Accounts

You must create an account to use the Service. You are responsible for maintaining the security of your account credentials and for all activity that occurs under your account. You must provide accurate information when creating your account and keep it up to date.

Your account includes emails about technical changes to Kata, for example about changes to features or about maintenance; you receive them from the moment you create your account. You can unsubscribe at any time, in the app under Settings → Account or with the link in any of these emails. You will continue to receive emails about your account or subscription (for example, to reset your password).

You can delete your account yourself at any time, in the iOS app and in the web app under Settings → Account. Deleting your account permanently removes your learning data. A subscription bought in the web app is cancelled with it and ends with the period already paid; an App Store subscription must be cancelled separately with Apple (see section 4).

4. Kata Pro, Prices and Payment

Free Plan

The free plan includes your vocabulary, word packages, unlimited flashcards, listening practice, progress statistics and sync, and three drill sessions per day.

Kata Pro

Kata Pro is a paid subscription. It includes unlimited drill sessions, natural HD voices for your words and example sentences in most learning languages, and our Chrome extension "Kata Languages - Subtitle translator" from the Chrome Web Store, which shows dual subtitles and translates words on YouTube, Netflix, Prime Video, Disney+ and Apple TV+ and saves words to your vocabulary. Kata Pro is available as a monthly or an annual subscription and applies to your account wherever you sign in to Kata.

Prices and Payment

The price and billing period shown to you before you subscribe apply. In the web app, Kata Pro is sold by our reseller Paddle (Paddle.com Market Ltd; for buyers in the United States Paddle.com Inc., in Canada Paddle.com (Canada) Ltd), the merchant of record: Paddle sells you the subscription, takes the payment, charges VAT or sales tax where applicable and sends you the receipts. Paddle's Buyer Terms (https://www.paddle.com/legal/buyer-terms) apply to the purchase; these Terms apply to your use of Kata. Prices in the web app include VAT where applicable (in the United States and Canada, sales tax may be added at checkout). The price is due at the start of each billing period, for the first time when the free trial ends.

Term and Renewal

A subscription runs for the billing period you chose (one month or one year) and renews automatically for the same period at the same price unless you cancel it before the period ends. In the web app you can cancel until the last moment of the current period. In the App Store, renewal must be turned off at least 24 hours before the end of the current period; Apple charges your Apple ID within the 24 hours before it ends.

Cancellation

You can cancel at any time, without giving reasons, with effect from the end of the current billing period; until then you keep Pro. Subscriptions from the web app: in Kata under Settings → Subscription → Manage Subscription (Paddle's customer portal, also linked in every email from Paddle), or without signing in via "Cancel contracts here" (https://app.kata-languages.com/cancel, also linked at the bottom of our website and in the web app), where we cancel it with Paddle for you and confirm your cancellation by email straight away. Subscriptions from the App Store can only be cancelled with Apple: on your iPhone under Settings → your name → Subscriptions.

Free Trial

Every plan starts with a free trial of 7 days. Unless you cancel before the trial ends (in the App Store at least 24 hours before), it continues as a paid subscription at the price shown when you subscribed.

Purchases in the App Store

If you subscribe in the iOS app, you buy from Apple: Apple is the seller, and Apple's terms apply to the purchase, its payment, cancellation and refunds. In addition to these Terms, your use of the iOS app is subject to Apple's Licensed Application End User License Agreement (Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

5. Withdrawal and Refunds

Purchases in the web app

Kata Pro in the web app is sold by Paddle (see section 4), so your right of withdrawal and refunds follow Paddle's Buyer Terms (https://www.paddle.com/legal/buyer-terms) and Refund Policy (https://www.paddle.com/legal/refund-policy). Under them, consumers in the EU, the EEA, Switzerland and the United Kingdom can withdraw from the subscription within 14 days; if it starts with a free trial, the 14 days begin when the trial ends and the first payment is taken. Paddle's customer portal, linked in every email from Paddle, has a withdrawal button; you can also contact Paddle at https://paddle.net.

Withdrawing with us

You can also withdraw with us, without signing in: via "Withdraw from contract here" (https://app.kata-languages.com/withdraw, also linked at the bottom of our website and in the web app) or by email to support@kata-languages.com. We carry out your withdrawal with Paddle and confirm its receipt by email straight away, with the date and time we received it. During the free trial, your subscription ends at once and nothing is charged; within 14 days of your first payment, it ends at once and everything you paid is refunded in full.

Refund policy

Within 14 days of the first payment for a Kata Pro subscription bought in the web app, you get everything you paid back in full if you ask, wherever you live: withdraw as described above or write to support@kata-languages.com. After that, payments are not refunded for the rest of a billing period: if you cancel, you keep Pro until the period ends and are not charged again. Paddle may grant further refunds under its Refund Policy, and your statutory rights remain unaffected. Refunds are made by Paddle to the payment method you used.

Purchases in the App Store

If you subscribed in the iOS app, Apple is the seller, and withdrawal and refunds follow Apple's terms. You can request a refund from Apple at https://reportaproblem.apple.com. We cannot withdraw from or refund App Store purchases on your behalf.

6. User Content

You retain ownership of any vocabulary, notes, or other content you create within the Service ("User Content"). By using the Service, you grant us a limited license to store, process, and display your User Content solely to provide and improve the Service.

7. Acceptable Use

You agree not to:

  • Use the Service for any illegal or unauthorized purpose
  • Attempt to gain unauthorized access to the Service or its systems
  • Interfere with or disrupt the Service or servers
  • Reverse engineer, decompile, or disassemble the Service
  • Create accounts through automated means or under false pretenses

8. Intellectual Property

The Service, including its design, code, learning content and curated vocabulary packages, is owned by Techsign Solutions GmbH and protected by copyright and intellectual property laws. You may not copy, modify, distribute, or create derivative works based on the Service without our prior written consent.

9. Disclaimer of Warranties

The Service is provided "as is" and "as available" without warranties of any kind, either express or implied. We do not guarantee that the Service will be uninterrupted, error-free, or that learning outcomes will be achieved. This does not affect your statutory rights, in particular the statutory warranty rights of consumers for digital products.

10. Limitation of Liability

To the maximum extent permitted by law, Techsign Solutions GmbH shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising from your use of the Service, including but not limited to loss of data or interruption of service. This limitation does not apply to liability for intent or gross negligence, for injury to life, body or health, or where the law does not allow liability to be limited.

11. Suspension and End of Your Account

We reserve the right to suspend or terminate your account if you violate these Terms. You can delete your account yourself at any time (see section 3). When your account ends, your right to use the Service ends.

12. Changes to These Terms

We may change these Terms for the future, for example when we add features or the law changes. We will tell you about significant changes in good time before they take effect, by email or in the app. If you do not agree, you can cancel your subscription and delete your account before the changes take effect. Changes to the price or the main features of a running paid subscription apply only with your consent.

13. Governing Law

These Terms shall be governed by and construed in accordance with the laws of Switzerland, without regard to its conflict of law provisions.

If you are a consumer, this choice of law does not deprive you of the protection of the mandatory provisions of the law of the country where you have your habitual residence.

14. Contact Us

If you have questions about these Terms of Service, please contact us at support@kata-languages.com or by post at Techsign Solutions GmbH, Aeschengraben 29, 4051 Basel, Switzerland.