Terms of Use
Last updated: November 12, 2026
Acceptance
By using Halley, you agree to these terms. Halley is developed by Henrique Augusto de Mello ("we"). Your use of the app is also subject to Apple's standard Licensed Application End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
The service
Halley is a study app built on flashcards and spaced repetition. Creating decks, studying and reviewing is free and works offline. AI card generation requires an account and has monthly limits.
Account
You are responsible for the use of your account. We may suspend accounts used for abuse, fraud or to get around limits.
Halley Plus (subscription)
- Halley Plus is an auto-renewing monthly subscription, charged to your Apple account.
- The price is shown before you buy. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period.
- You can manage or cancel the subscription in your Apple account settings. Access continues until the end of the period you already paid for.
- The benefits, such as the number of generations per month, are the ones described in the app at the time of purchase. Monthly generations do not roll over.
Generation packs
Packs are one-time purchases that add extra generations to your account. They never expire and are used after your monthly generations. Refunds follow Apple's rules.
AI-generated content
Cards are created automatically and may contain mistakes. Review them before you study. Do not rely on Halley as your only source for medical, legal or financial decisions.
Your content
You keep the rights to the content you submit and confirm that you are allowed to use it. You authorize us to process it only to generate your cards. Do not submit illegal content or content that infringes the rights of others.
Acceptable use
Do not try to get around limits, reverse engineer, overload the service or use it for unlawful purposes.
Availability and changes
We may change, suspend or discontinue features, including limits and AI models. Changes that affect active subscriptions will be announced in advance.
Liability
The app is provided as is. To the extent permitted by law, we are not liable for indirect losses. Nothing in these terms limits your rights as a consumer.
Governing law
These terms are governed by Spanish law, without prejudice to the consumer protections of your country of residence.