Terms of Service

Lingrow is a vocabulary learning web application available at this website. The service is operated by David Felix, based in Portugal ("we", "us"). By creating an account or using Lingrow you agree to these terms.

Lingrow lets students build personal vocabulary lists, practice them daily with spaced repetition, and lets teachers connect with students to manage vocabulary and follow progress. Some features are free and some require a paid subscription, as described on the pricing page. We may add, change, or remove features over time. If a change materially reduces what a paid plan includes, we will notify you in advance.

You need an account with a valid email address to use Lingrow. You are responsible for keeping your login credentials safe and for all activity on your account. If you are under 16, you may only use Lingrow with the consent of a parent, guardian, or your school. You can delete your account at any time from the Settings page, which permanently removes your data.

Paid plans are sold through our merchant of record, Paddle, who handles checkout, billing, taxes, and invoices. Subscriptions renew automatically at the end of each billing period until cancelled. You can cancel at any time from the billing portal in Settings, and you keep your plan until the end of the period you paid for. Refunds are handled as described in our Refund Policy.

You can change your plan at any time from Settings. Moving to a higher plan, or switching to annual billing on your current plan, takes effect immediately and the prorated difference is charged right away. Moving to a lower plan, or switching from annual to monthly billing, takes effect at the end of the period you already paid for. You keep your current plan and benefits until then, nothing is charged in the meantime, and you can cancel a scheduled change before it takes effect.

If a plan change leaves you with unused value, Paddle holds it as credit and applies it automatically to your next payment for that same role. Credit is not shared between a student subscription and a teacher subscription on the same account, and it cannot be withdrawn or paid out separately.

If you downgrade or cancel, you keep everything you created. Words and other content are not deleted. If you have more languages than your new plan allows, the extra ones are locked (visible but not usable for practice) rather than deleted, we pick which stay active for you automatically, and you can change that selection or reactivate a locked language at any time by upgrading again.

The words, translations, and images you add to Lingrow are yours. You grant us the permission needed to store and process them so the service can work, nothing more. When you connect with a teacher and grant access to a language, that teacher can view, add, edit, and delete words in that language until you revoke the grant or remove the connection. A teacher's own plan may limit how many of your languages they can access at once; if your teacher's plan changes and no longer covers everything you've shared, we may automatically pause access to the extra ones, nothing is deleted and you can share a paused language again at any time.

You agree not to upload content that is illegal, infringes the rights of others, or is abusive or harmful. We may remove such content and suspend accounts that repeatedly break this rule.

Some paid features use artificial intelligence to generate images, descriptions, example sentences, and other learning content. AI output can be inaccurate or imperfect. It is provided as a learning aid, and you should not rely on it as authoritative. AI features are subject to the usage quotas shown on the pricing page.

• Do not attempt to break, overload, or gain unauthorised access to the service.
• Do not use automated tools to scrape the service or abuse free tiers, trials, or AI quotas.
• Do not resell or sublicense access to Lingrow without our written agreement.

The Lingrow platform, including its software, design, name, and logo, is our property and is protected by intellectual property law. These terms give you a personal, non exclusive, non transferable right to use the service. They do not transfer any ownership of the platform to you, and your content remains yours as described in section 5.

We work hard to keep Lingrow available and your data safe, but the service is provided "as is" without warranties of any kind. To the maximum extent permitted by law, our total liability for any claim related to the service is limited to the amount you paid us in the 12 months before the claim. Nothing in these terms limits liability that cannot be limited by law, including your statutory rights as a consumer.

If your use of Lingrow in violation of these terms or the law, or content you upload that infringes the rights of others, causes a third party to bring a claim against us, you agree to compensate us for the resulting damages and reasonable legal costs. This obligation survives the closure of your account.

Neither party is liable for failures caused by circumstances beyond its reasonable control, such as natural disasters, acts of government, power or internet outages, cyberattacks, or failures of third party providers. Each party will make reasonable efforts to limit the impact and resume normal operation as soon as practicable.

You can stop using Lingrow and delete your account at any time. We may suspend or terminate accounts that violate these terms, with notice where reasonably possible. If we ever discontinue the service, we will give paid subscribers reasonable notice and refund any unused portion of prepaid subscriptions.

We may update these terms as the service evolves. For material changes we will notify you by email or in the app before they take effect. These terms are governed by Portuguese law, and disputes are subject to the courts of Portugal, without prejudice to mandatory consumer protections in your country of residence.

If you are a consumer in the European Union, you may also submit a complaint through the European Commission's Online Dispute Resolution platform at ec.europa.eu/consumers/odr. Questions? Reach us through the contact page.