Using HeyPolyglot
HeyPolyglot is a language-learning service operated by DataInterview LLC (“we,” “us,” or “our”). These Terms govern your use of our website, lessons, exercises, flashcards and AI features. By creating an account or using the service, you agree to these Terms. If you do not agree, do not use the service.
Our Privacy Policy explains how we handle personal information. You must be legally able to enter into these Terms, or have permission from a parent or legal guardian who agrees to them on your behalf.
Your account
Provide accurate account information, keep your sign-in credentials secure, and use only accounts you are authorized to access. Contact dan@datainterview.com if you suspect unauthorized access. You are responsible for activity you authorize through your account.
Some content, including grammar lesson notes, is available without signing in. Interactive learning and saved progress may require an account.
Learning access and credits
- Free: 10 lesson/practice activity credits in total, shared across the six learning tracks. This is a one-time allowance, not a monthly refill. Free accounts also receive a limited trial allowance of 100 AI credits for eligible activities.
- Premium and Premium Pro: unlimited access to prepared lessons and practice while the subscription is active. On-demand AI features have a separate credit allowance.
- AI allowances: Premium includes 1,000 AI credits and Premium Pro includes 3,000 AI credits per monthly credit period. Annual subscriptions also receive their AI allowance monthly, not all at once.
- Credit use: different AI actions use different amounts, including live conversation, writing feedback, pronunciation checks and generated content. Standard lesson audio, including audio generated for caching, does not use AI credits. Free activity-access limits still apply.
Paid AI allowances reset at the start of each monthly credit period; unused credits do not roll over. The Free trial AI allowance does not refill. Credits are service usage units, cannot be transferred, and have no cash value. Exhausting AI credits does not remove a paid subscriber’s access to prepared learning. Your account shows your current allowance and balance.
Reasonable technical limits apply to protect availability and prevent abuse. “Unlimited” prepared learning does not include unlimited AI generation, automated bulk access or resale.
Subscriptions and payment
Paid plans are billed monthly or annually through Stripe. The price, currency, billing interval and any applicable taxes are shown at checkout. An annual plan is charged for the full year upfront.
Subscriptions automatically renew for the same billing interval until canceled. By subscribing, you authorize recurring charges to your selected payment method. You can manage payment details and your subscription through the billing portal in your account.
We will communicate changes to subscription prices or material plan benefits before they apply to a future renewal. Failed or overdue payments may interrupt paid access.
Plan changes and cancellation
- Upgrades: take effect immediately, with a prorated charge. The difference in AI allowance is added for the current credit period; credits already used are not reset.
- Downgrades: take effect immediately. Any prorated billing credit is retained in your Stripe customer balance for future invoices rather than automatically refunded to your payment method. Your already-issued AI allowance remains available until the current monthly credit period ends; later periods use the lower plan’s allowance.
- Cancellation: cancel through your account’s billing portal before the next renewal. Access continues until the end of the paid monthly or annual billing period. Cancellation stops future renewals and does not automatically refund the current paid period.
- After paid access ends: your account returns to Free with any original Free activity credits remaining. Cancellation does not grant a new Free allowance.
Account deletion is different from cancellation: deleting your account ends access and cancels an active subscription immediately. For billing errors, refund requests or an unused billing balance, contact dan@datainterview.com. Nothing in these Terms limits any refund, withdrawal or other consumer rights required by applicable law.
AI and learning results
Lino and other AI features generate responses, audio, translations and feedback using third-party AI services. Results can be inaccurate, incomplete or inconsistent. Check important information, and do not treat a score or assessment as a formal proficiency certification.
HeyPolyglot provides educational support, not professional legal, medical or financial advice. Learning outcomes depend on many factors, and we do not promise a particular level of fluency or result. Avoid submitting sensitive information that is unnecessary for your learning activity.
Your content and acceptable use
You retain your rights in writing, recordings and other content you submit. You give DataInterview LLC permission to process, store and transmit that content as needed to provide the service, including returning feedback and saving learning progress, as described in the Privacy Policy. Only submit content you have the right to use.
You may use HeyPolyglot’s lessons, illustrations and other materials for your personal learning. This does not transfer ownership of our materials or permit their resale or bulk redistribution.
Do not use the service unlawfully, harass others, upload malicious material, infringe others’ rights, bypass access or credit controls, share accounts to evade plan limits, or disrupt the service. We may restrict or suspend access to address misuse, fraud, security risks or a material breach of these Terms.
Availability and responsibility
We work to keep HeyPolyglot available, but features may change and outages can occur, including interruptions involving third-party providers. To the extent permitted by law, the service is provided “as is” and “as available,” without a guarantee that it will always be uninterrupted or error-free.
To the extent permitted by law, DataInterview LLC is not responsible for indirect or consequential losses arising from use of the service. This does not exclude liability that cannot legally be excluded, including mandatory consumer protections.
Updates and contact
We may update these Terms as the service changes. We will update the date on this page and provide notice of material changes before they take effect where required. Continued use after updated Terms take effect is subject to those Terms.
For questions about these Terms, your subscription or the service, contact DataInterview LLC at dan@datainterview.com.