Terms of Use

Free use and Kastoro Pro

The free plan lets you create up to 3 documents, with no card. Kastoro Pro lets you create unlimited documents. Kastoro AI is not included in the free plan or in Pro; it is a separate add-on, described below.

Paying on the web in Brazil

On the web, the offer is set at checkout by the country you're connecting from, not by the site's language. From Brazil, Pro costs R$49.90, IOF included, paid once by Pix. It gives you 365 days of Pro and does not renew automatically: to extend it, you pay again. Pix requires the payer's name, CPF and e-mail. Payments are processed by Stripe.

Paying on the web outside Brazil

Outside Brazil, Pro is an annual subscription of $11.99, billed to a credit card on Stripe's hosted checkout page. It renews automatically each year until you cancel. You can cancel at any time from Manage plan in the app, which opens Stripe's customer portal. Cancelling stops the next renewal, and Pro remains active until the end of the billing period already paid for. Prices are in US dollars, and your bank may add currency-conversion fees.

iPad and the App Store

In the iPad app, Pro is a yearly auto-renewing App Store subscription of $11.99 per year in the US or R$49.90 per year in Brazil; Apple shows the local price in other regions before purchase. Apple bills your Apple account when you confirm and on each renewal, unless you cancel in your App Store subscription settings before it renews. You can restore the purchase with the Apple account that made it. Pro bought on the web also counts in the iPad app when you sign in with the same account. For now, an App Store subscription unlocks Pro only in the iPad app, not on the web.

Kastoro AI

Kastoro AI is a separate add-on, sold on the web and in the iPad app. It covers Ask the page, the tutor, quiz generation, AI reading of your PDFs, read-aloud, dictation and transcription, and voice conversations. On the web in Brazil, it costs R$14.90 for 30 days, paid once by Pix, with no automatic renewal. On the web outside Brazil, it is a card subscription of €3.99 per month in euro-area countries, £3.99 in the UK and $3.99 elsewhere that renews automatically every month and can be cancelled the same way as Pro. In the iPad app, it is a monthly auto-renewing App Store subscription of $3.99 per month in the US; Apple shows the local price in other regions before purchase and bills your Apple account when you confirm and on each renewal, unless you cancel in your App Store subscription settings before it renews. You can restore it with the Apple account that bought it. However you buy it, it works on every device signed in to the same account. Kastoro AI has fair-use limits and is not unlimited; we may suspend it in case of abuse.

When Pro ends

If Pro expires or is cancelled, no documents are deleted or locked: everything remains readable, editable and exportable, and existing documents stay intact. Only the creation of new documents returns to the free limit.

Your content and acceptable use

You keep ownership of your content. You grant us only the limited permission needed to provide services you enable. Do not use Kastoro to violate law, infringe rights, disrupt services or distribute harmful material.

Changes and contact

Features and these terms may change as the product evolves. Material changes will be reflected here. Questions can be sent to hello@kastoro.ai.