Last updated: 7 November 2026
MonStock ("we," "us," or "our") respects your privacy. This Privacy Policy explains how we collect, use, and protect your information when you use the app.
Card recognition happens on your device, and your collections, watchlist, and settings are stored there as well. Some information leaves your device so that we can show card prices, answer your questions about cards, manage your subscription, understand how the app is used, and measure our advertising. This policy explains what that information is and where it goes.
We collect the following information when you use MonStock. You do not need to create an account to use the app.
When you scan a card, the app matches the camera image, or a photo you pick from your library, against its card catalog on your device. These images are not sent to us.
Some of this information is collected automatically by the analytics, subscription, and advertising measurement tools built into the app. We determine your approximate location, meaning your country or region, from your App Store country or from your IP address, and our advertising partners may also determine it from your IP address.
We use your information to show card details and prices, to answer your questions about cards, to provide and restore your Pro access, and to respond when you contact us. We also use it to understand how the app is used so that we can improve it, and to measure and improve the advertising campaigns we run to promote MonStock, including on platforms operated by Meta and Google.
MonStock does not show ads. We do not sell your personal information.
Meta and Google receive information about your activity and purchases in the app so that we can see which of our ads lead people to install MonStock or subscribe. The app asks for your permission through Apple's tracking prompt before it shares your advertising identifier. If you allow tracking, we and these partners may link your identifiers, app activity, and purchases with information from other companies' apps and websites to measure and improve our ads. If you do not allow it, your advertising identifier is not shared.
MonStock uses a third-party AI service, OpenRouter, to answer questions about a card. OpenRouter passes your questions to Google's Gemini model to produce the answers.
When you use the AI chat, we send OpenRouter the text you type, the earlier messages in that chat, the details of the card you are viewing, and the app language. Your messages pass through our servers on their way to OpenRouter, and we do not save your messages or the replies on our servers.
The first time you open the AI chat, the app explains that your messages are sent to OpenRouter, and nothing is sent until you tap Continue. Please include only details that relate to your cards.
Your collections, watchlist, and settings stay on your device until you delete them or remove the app. We keep other information for as long as we need it to provide the app, or until you ask us to delete it.
We do not store the information you send to the AI features after your result is returned. It is handled by OpenRouter (Google Gemini model) according to the privacy policies linked in this policy.
We use reasonable technical and organizational measures to protect your information, including encrypted connections between the app and our services. No system is completely secure, so we cannot guarantee absolute security.
You can turn off usage analytics at any time by switching off Marketing & analytics in Settings, under Other. When you do, we stop collecting information about how you use the app for analytics.
Tracking is controlled separately. You can refuse it when the app asks, or change your choice later in iOS Settings, under Privacy & Security and then Tracking. When tracking is off, your advertising identifier is not shared with Meta or Google.
You can delete your collections in the app, and removing the app erases the information stored on your device. To remove the data linked to you on our servers, or to make any other privacy request, contact us using the email at the end of this policy. Deleting your data or removing the app does not cancel your subscription, which you manage in your Apple account settings.
MonStock is not intended for children under 13, and we do not knowingly collect their personal information. If you believe a child has given us personal information, please contact us using the email at the end of this policy and we will remove it.
We use your information to provide the services you ask for, with your consent where we ask for it, and for our legitimate interests in improving the app and preventing abuse.
We ask for your consent before your information is sent to OpenRouter (Google Gemini model), and you can withdraw it at any time.
You may ask us for access to your information or a copy of it, and ask us to correct or delete it. You may also object to or restrict how we use it. Withdrawing your consent does not affect processing that happened before you withdrew it. To use these rights, please contact us using the email at the end of this policy. You also have the right to complain to your local data protection authority.
Our service providers may process your information in countries other than your own, which may have different data protection laws.
Depending on your state, you may have the right to know, access, correct, and delete your personal information, and to receive a copy of it. To use these rights, please contact us using the email at the end of this policy. We will not treat you differently for using them. We do not sell your personal information.
Each of these providers has its own privacy policy.
Provides our product analytics and is hosted in the EU. It receives usage information, a random ID, the app language, your country, and your subscription status, and it is set not to store your IP address.
Measures our advertising campaigns. It receives app and purchase activity, device information, and your advertising identifier when you allow tracking.
Measures our advertising campaigns through Google Analytics for Firebase. It receives app and purchase activity, device information, and your advertising identifier when you allow tracking.
Manages subscriptions and passes purchase information to PostHog and Meta. It receives your purchase history, a random ID, and device identifiers.
Runs the App Store and processes your payments. It receives your purchase and payment details.
Hosts our servers, including the card catalog and prices, the AI chat connection, and our feedback inbox. It receives your requests with your IP address, your AI chat messages as they pass through, and the feedback you send.
Answers AI chat questions by routing them to Google's Gemini model. It receives your chat messages, the card details, and the app language.
We may update this policy from time to time. When we do, we will change the date at the top of this page.
If you have questions about this policy or want to make a privacy request, please email us at the address below.
Developer: Imad Khan
Email: imad@madbyteapps.com
Location: Vilnius, Lithuania