Privacy Policy

Kala is an adaptive language‑revision app that helps you practise translating into a target language and targets your real weaknesses over time. Kala is operated by Eco Echo Marketing Pty Ltd(“we”, “us”, or “Kala”), a company based in New South Wales, Australia. This policy explains what information we collect, how we use it, who we share it with, and the choices you have. It applies to the Kala mobile app and the Kala website at kala‑learn.com.

By creating an account and using Kala, you agree to the practices described here.

Information we collect

We collect only what we need to run the service:

• Account information.When you sign in with Google or Apple, our authentication provider (Clerk) gives us your email address and name, and a unique account identifier. If you use Sign in with Apple’s private‑relay email, we only receive that relay address.
• Your learning content. The sentences you are asked to translate, the translations you submit, the AI‑generated grades and feedback, the error categories identified, the vocabulary you add or miss, your CEFR level, and the language pair you are studying.
• Usage data. Practice activity such as your daily practice counts (used to enforce free‑tier limits), session timestamps, and progress metrics used to generate your insights.
• Subscription status.Whether your account is on the free or paid (Pro) plan. Purchases are handled by Apple; we do not receive or store your payment card details (see “Subscriptions and payments” below).

We do not intentionally collect any special‑category (sensitive) personal information, and we ask that you not include such information in the text you enter.

How we use your information

• To provide the core service — generate practice sentences, grade your translations, and give feedback.
• To personalise your practice — adapt difficulty (CEFR level), target your grammar weaknesses, and surface missed vocabulary.
• To build your progress insights and dashboards.
• To operate the freemium model — count daily usage and apply free‑tier limits.
• To manage your subscription and keep your plan status in sync.
• To secure the service, prevent abuse, and diagnose problems.

AI processing

To generate sentences and grade your translations, Kala sends the relevant text (for example, the sentence and the translation you submit) to our AI provider, Anthropic, which processes it to return a graded result. This text may include the content you type. We use these providers to deliver the feature you have requested; we do not use your content to train third‑party models, and our AI provider processes it on our behalf as a service provider.

Service providers we use

We rely on trusted third parties to run Kala. Each processes data only to provide their service to us:

• Clerk — authentication and account management.
• Neon — database hosting for your account and learning data.
• Vercel — application hosting and delivery.
• Anthropic — AI processing for sentence generation and grading.
• RevenueCat — subscription management.
• Apple — App Store payments and Sign in with Apple.
• Google — Sign in with Google.

How we share information

We do not sell your personal information. We share it only with the service providers listed above so they can perform services for us, and where required by law (for example, to comply with a valid legal request) or to protect the rights, safety, and security of Kala and its users.

Data retention and deletion

We keep your information for as long as your account is active. You can delete your account at any time from the app (Settings → Delete account). Deleting your account permanently removes your learning data and account from our database and deletes your authentication record — this action cannot be undone. Some records may persist for a short period in routine backups before being overwritten, and we may retain limited information where required by law.

Data security

Data is encrypted in transit (HTTPS/TLS), and we use reputable infrastructure providers with their own security controls. No method of transmission or storage is completely secure, but we take reasonable measures to protect your information.

International data transfers

Our providers process and store data in the United States and other countries. If you access Kala from outside those countries, including Australia and the European Economic Area, your information may be transferred to and processed in a country with different data protection laws than your own.

Your rights and choices

Depending on where you live, you may have the right to access, correct, export, or delete your personal information, and to object to or restrict certain processing. You can access and delete most of your data directly in the app. To make any other request, contact us at george@ecoecho.com.au. We will respond as required by applicable law.

Subscriptions and payments

Kala Pro is an auto‑renewing subscription purchased through the Apple App Store. Payment is charged to your Apple ID, and Apple (via our subscription provider, RevenueCat) manages billing, renewals, and refunds. We receive your subscription status so we can unlock Pro features, but we never receive your full payment details. You can manage or cancel your subscription in your Apple ID settings or via the in‑app subscription management screen.

Children's privacy

Kala is intended for adult language learners and is not directed to children. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us and we will delete it.

Changes to this policy

We may update this policy from time to time. When we do, we will revise the “Last updated” date above and, where appropriate, notify you in the app. Your continued use of Kala after an update means you accept the revised policy.

Contact us

Kala is operated by Eco Echo Marketing Pty Ltd. If you have questions about this policy or how we handle your data, contact us at george@ecoecho.com.au, or by mail at 27 Delange Rd, Putney NSW 2112, Australia.