Last updated: April 5, 2026
BandNine.ai ("we", "our", or "us") is an AI-powered IELTS preparation platform. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our website and services at bandnine.ai. By using BandNine.ai, you agree to the collection and use of information in accordance with this policy.
When you create an account, we collect your name, email address, and authentication credentials. If you sign up via Google or GitHub OAuth, we receive your name, email, and profile picture from those services.
We collect your IELTS target band score, planned test date, test type (Academic or General Training), and immigration destination country to personalise your learning experience.
We store your writing submissions, speaking recordings, reading and listening answers, band scores, AI feedback, time spent, and progress data. This data is used to track your improvement and adapt exercises to your level.
Payments are processed by Stripe. We do not store your credit card number, CVV, or full payment details. We receive and store your Stripe customer ID, subscription plan, and payment status.
We use PostHog for product analytics. We collect page views, feature usage, session duration, device type, browser, and approximate location (country level). We do not sell this data to third parties.
Your writing submissions and speaking transcriptions are sent to Anthropic (Claude AI) for scoring and feedback generation. Your text is processed in real-time and is not used by Anthropic to train their models when sent via the API. Audio for listening exercises is generated using OpenAI text-to-speech or Microsoft Edge TTS.
We do not sell your personal data. We share data only with:
Your data is stored securely in Supabase (PostgreSQL) with Row-Level Security (RLS) enabled, ensuring users can only access their own data. All data is transmitted over HTTPS. We use industry-standard security practices including encrypted connections, secure authentication tokens, and regular security reviews.
We retain your account and exercise data for as long as your account is active. If you delete your account, we will delete your personal data within 30 days, except where we are required to retain it for legal or compliance purposes. Anonymised, aggregated data may be retained indefinitely for analytics.
Depending on your location, you may have the right to:
To exercise any of these rights, email us at hello@bandnine.ai.
We use essential cookies for authentication and session management. We use PostHog for analytics which may set cookies to understand how you use our service. We do not use advertising cookies or trackers.
BandNine.ai is not intended for children under 16. We do not knowingly collect personal information from children. If you believe a child has provided us with personal data, please contact us and we will delete it.
We may update this Privacy Policy from time to time. We will notify you of significant changes by email or by posting a notice on our website. Continued use of BandNine.ai after changes constitutes acceptance of the updated policy.
If you have questions about this Privacy Policy or your data, contact us at:
Email: hello@bandnine.ai