Marca

Privacy Policy

Last updated: 19 June 2026

Marca (“the app”, “we”, “us”) is a reading-habit app published by Adaba Studio. Marca is built to be private by default: it is a single-player app, and the books, reading sessions, quotes, notes, goals, and streaks you create live on your device. This policy explains the limited information the app handles and why.

The short version: We don’t require an account, we don’t ask for your name or email, and your reading library never leaves your device. We collect only anonymous, aggregate product analytics to make the app better — no advertising, no selling of data, no cross-app tracking.

1. Your reading data stays on your device

Everything you log in Marca — your library, reading sessions, page and time progress, quotes and notes, daily goals, reminders, streaks, and the name you optionally enter — is stored locally on your device using Apple’s on-device database (SwiftData). This information is not transmitted to us and we cannot access it. If you delete the app, this data is removed with it.

2. Anonymous analytics

To understand how the app is used and where to improve it, we collect anonymous product-analytics events (for example: completing onboarding, logging a reading session, finishing a book, or opening the upgrade screen) using PostHog.

Events are tied to a random, app-generated identifier — not your name, email, Apple ID, or device advertising identifier.
We do not use the IDFA and do not track you across other apps or websites.
The titles of the books you read, your quotes, and your notes are not sent in these analytics events.
Analytics data is processed on servers located in the European Union.

In App Store terms this is categorised as “Usage Data / Product Interaction”, not linked to your identity and not used for tracking.

3. Book search

When you search for a book to add to your library, your search text is sent to the Open Library service (operated by the Internet Archive) to return matching titles, authors, and cover images. These requests are subject to Open Library’s own privacy practices. If you never search, no such requests are made.

4. Subscriptions

Marca+ subscriptions are sold and processed by Apple through the App Store. All payment is handled by Apple — we never receive or store your payment details. We only learn whether an active Marca+ entitlement exists on your device, via Apple’s StoreKit framework.

5. Notifications

If you opt in to a daily reading reminder, the notification is scheduled locally on your device by iOS. We do not operate a server that sends you push notifications, and you can turn reminders off at any time in the app or in iOS Settings.

6. What we do not do

We do not sell or rent your data.
We do not show ads.
We do not build advertising profiles or track you across apps.
We do not require you to create an account or provide personal details.

7. Children

Marca is not directed to children under the age of 13 (or the minimum age required in your country), and we do not knowingly collect personal information from children.

8. Your rights

Because your reading data is stored only on your device, you are in control of it: you can edit or delete entries in the app, and deleting the app removes the data entirely. For anonymous analytics, or if you have any privacy question or request (including under the GDPR or CCPA), contact us at the address below and we will help.

9. Changes to this policy

We may update this policy from time to time. Material changes will be reflected by updating the “Last updated” date at the top of this page.

10. Contact

Adaba Studio — adabastudio@gmail.com