Privacy Policy for Deadly

Last updated: 25 August 2026

This Privacy Policy explains how the Deadly mobile application ("Deadly", "the app", "we", "us") handles your information. Deadly is a study planning app that helps you track deadlines, plan study sessions and monitor your progress.

Deadly is built to be offline-first. Your study data never leaves your device. The only information that is transmitted is what is needed to process a subscription purchase and, if you choose to watch one, to show an advertisement.

Summary

• Your study data stays on your device. We cannot see it.
• We do not have a user account system, so we never ask for your email or password.
• We do not track you across other apps or websites, and we do not ask for permission to do so.
• Advertisements are optional. They only appear if you choose to watch one, and they are never personalised.
• Calendar sync is optional and one-way: Deadly can add your plans to your calendar, but never reads what is already in it.

Data stored on your device

The following information is created by you and stored locally on your device using an on-device database. It is not transmitted to us or to any third party:

• Goals and deadlines (title, subject, date, type, difficulty, target study time, completion status)
• Planned and completed study sessions (date, time, duration, notes)
• Subjects you create
• Your name or nickname and school name, if you choose to enter them
• App preferences such as theme choice and reminder timing

This data is removed when you delete the app from your device. Because it is stored only on your device, we are unable to recover it for you if it is lost.

Advertising

Deadly includes optional rewarded advertisements provided by Google AdMob (Google Ireland Limited). These are shown only when you actively choose to watch one — for example, to unlock automatic session planning once without subscribing. Deadly does not display banner ads, pop-up ads, or any advertising you did not ask for.

Advertisements in Deadly are not personalised. The app requests non-personalised advertising only, which means the ads you see are not based on your interests or your behaviour in other apps. Deadly does not request permission to track you, and does not use Apple's advertising identifier for tracking purposes.

To serve and measure an advertisement, Google receives:

• Technical information about your device (such as device type, operating system version and general region)
• A device identifier used to limit how often an ad is repeated and to detect invalid activity
• The fact that an ad was shown and completed

Google does not receive any of your study data. Google's use of this information is governed by Google's own privacy policy, available at https://policies.google.com/privacy and https://policies.google.com/technologies/partner-sites

If you subscribe to Deadly Premium, no advertisements are shown.

Subscription data

Deadly offers an optional auto-renewing premium subscription. Purchases are processed by Apple and managed through RevenueCat, Inc., a subscription management provider.

When you make or restore a purchase, RevenueCat receives and processes:

• A randomly generated, app-specific user identifier
• Your purchase and subscription status (which product was bought, when it renews or expires)
• Basic device and country information supplied by the app store

This information is used solely to validate your purchase and to unlock premium features on your device. It is not used for advertising and is not sold. This identifier is not linked to your name or email address.

Apple processes the payment itself. We never receive or have access to your payment card details. Apple's handling of your data is governed by Apple's own privacy policy.

RevenueCat's privacy policy is available at https://www.revenuecat.com/privacy/

Calendar

If you switch on calendar sync in the app's settings, Deadly writes your deadlines and study sessions to a calendar on your device named "Deadly". This is off by default, and Deadly only asks for calendar access at the moment you switch it on.

The information stays on your device. Calendar entries are created through your device's own calendar system. Nothing about your deadlines, sessions or calendar is sent to us or to any third party.

What Deadly writes:

• Deadlines, as all-day entries with the title and subject you entered
• Study sessions, as time blocks with the title, duration and any note you added

Deadly does not read your calendar. It cannot see your existing appointments or events. It looks up the list of calendars on your device only to find or create its own "Deadly" calendar, and it only ever writes to that one — never to your personal calendars.

You stay in control:

• Switching sync off deletes the "Deadly" calendar and everything in it from your device
• You can hide, recolour or delete the calendar yourself in your device's calendar app
• You can withdraw calendar access at any time in your device settings, which stops any further writing

Notifications

If you allow notifications, Deadly schedules reminders for your study sessions and deadlines. These notifications are generated and scheduled entirely on your device. No notification content is sent to us or through any external server. You can turn notifications off at any time in your device settings.

Data we do not collect

Deadly does not collect, use or share:

• Analytics or usage statistics about how you use the app
• Location data
• Contacts, photos or health data
• The contents of your calendar — Deadly writes to its own calendar but never reads yours
• Your name, email address or any other contact information

Deadly does not track you across apps or websites owned by other companies, and does not build an advertising profile about you.

Children's privacy

Deadly is intended for general audiences and is suitable for students. We do not knowingly collect personal information from children. Study data never leaves the device and no account is required, so the app itself does not gather personal information from any user, regardless of age. Advertising content is restricted to the most family-friendly rating available, and advertisements are non-personalised.

Your rights and choices

Because your study data is stored only on your device, you are in full control of it:

• Access and correction: all your data is directly viewable and editable within the app.
• Deletion: deleting an item in the app removes it. Deleting the app removes all local data.
• Calendar: sync is off until you turn it on, and switching it off removes the calendar Deadly created.
• Advertising: watching an advertisement is always your choice. You can avoid ads entirely by not using the reward option, or by subscribing to Deadly Premium.
• Subscription: you can view, manage and cancel your subscription at any time in your Apple ID Account Settings.

If you would like your subscription-related records removed from RevenueCat, contact us at the address below and we will arrange it.

Changes to this policy

We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date at the top of this page. Material changes will be communicated within the app.

Contact

If you have questions about this Privacy Policy or about how your data is handled, contact us at:

hendrikvdkaaden@gmail.com