Privacy Policy

Last updated: September 24, 2026

Introduction

This policy explains what information Luck Architect processes, why, who else is involved, how long it is kept, and what you can do about it. Luck Architect is made by ICU Development (contact at the end of this page), which is responsible for the processing described here.

Summary

  • Your game is always saved on your device. You can play without an account.
  • If you sign in (optional), a copy of your save is stored online so you can restore it on another device.
  • The app sends crash reports and anonymous gameplay statistics to Google Firebase so we can fix bugs and balance the game.
  • Rewarded ads are optional and served by Google AdMob.
  • We never see your payment details, and we never sell your data.

Game Data on Your Device

Your progress and settings are stored locally on your device, together with a backup copy the game uses if a save ever becomes unreadable.

Account and Cloud Save (Optional)

You can sign in with Google, Google Play Games (Android) or Apple (iOS) to keep a copy of your save online. When you sign in, we receive from the sign-in provider an account identifier and, depending on the provider, your email address and display name. We use them only to connect your save to your account. Your password is never shared with us.

Before you sign in, the app may create an anonymous account: a random identifier, not linked to your name, email or device, so a backup of your save can be kept.

On Android, if you are already signed in to Google Play Games on your device, the game uses that sign-in automatically so your save can follow you to a new phone. Google Play Games then shows its own "Welcome back" message. You can sign out in Settings → Account; the game then stops signing in with Play Games automatically until you sign in again yourself.

Sign-in and cloud save are part of the game's functionality and are not affected by your advertising and statistics consent choices. They are not used for advertising or tracking.

The online save contains your game progress and a timestamp. It is stored with Google Firebase (Cloud Firestore) in a data center in Zurich, Switzerland.

Crash Reports (Firebase Crashlytics)

When the app crashes or a save cannot be written or read, a report is sent to Firebase Crashlytics. A report contains technical information: the error and where in the app it happened, device model, operating system version, app version, whether the app was in the foreground, and a random installation identifier. It also contains a few game details that help us reproduce the problem (for example the era you were in). Crash reports do not contain your name, email or payment details. We use them to find and fix bugs.

Gameplay Statistics (Google Analytics for Firebase)

The app sends usage statistics to Google Analytics for Firebase, such as how long a play session lasts, how much was earned during play and while away, when an era is completed or a timeline is collapsed, which in-game upgrades (Laws) are bought, and whether an optional ad was watched. Google Analytics also records general information such as device model, operating system, app version, language, country or region (derived from your IP address, which Google does not store) and an app-instance identifier.

We use these statistics to understand how the game is played and to balance its pacing. We do not send your name, email or anything you type.

Advertising (Google AdMob)

Luck Architect shows optional rewarded ads served by Google AdMob. Ads only play when you choose to watch one in exchange for an in-game bonus - there are no forced or interstitial ads. To serve and measure ads, Google may collect and process data such as your device's advertising identifier, IP address (which can indicate coarse location), and ad interaction data.

Your Consent Choices

If you are in the European Economic Area, the United Kingdom or Switzerland, the app asks for your consent when you first start it. Your answer applies to both advertising and gameplay statistics: if you do not consent to storing information on your device or to measurement, Google Analytics receives no identifiers from you, and ads are not personalized if you refuse personalized advertising. You can review or change your choices at any time in Settings → Ad Privacy Options.

In-App Purchases

Optional purchases and restores are handled entirely by Google Play or the Apple App Store. We never receive or store your payment details. Google Analytics may record that a purchase happened (product and price) as part of the statistics above.

Bug Reports by Email

If you use the in-app bug report, the app opens your email app with a message that includes game diagnostics (such as app version, device model, settings and game progress). Nothing is sent unless you send the email yourself. We use it only to answer your report.

Why We May Process This Data

  • Cloud save and sign-in: to provide the feature you asked for.
  • Crash reports: our legitimate interest in a working, secure app.
  • Gameplay statistics and ads: your consent where the law requires it (see "Your Consent Choices"), otherwise our legitimate interest in improving the game and funding it.

Service Providers and International Transfers

Firebase (Crashlytics, Analytics, Authentication, Cloud Firestore), AdMob and Google sign-in are provided by Google (Google Ireland Limited in Europe, Google LLC elsewhere). Apple sign-in is provided by Apple. These providers process data on our behalf or as independent controllers under their own terms, and may process it outside your country, including in the United States, under safeguards such as the EU Standard Contractual Clauses. See the Google Privacy Policy, Privacy and Security in Firebase, how Google uses information from apps that use its services and the Apple Privacy Policy.

We do not sell your data and do not share it with anyone else.

How Long Data Is Kept

  • Save on your device: until you delete it (clear the app's data or uninstall).
  • Account and online save: until you delete your account.
  • Crash reports: 90 days.
  • Gameplay statistics: up to 14 months.

Deleting Your Data and Your Rights

You can delete your account and your online save at any time in the app under Settings. You can also ask us to delete them by emailing icu.app.development@gmail.com with the subject "Luck Architect account deletion"; please tell us which sign-in method you used. We delete the account and the online save within 30 days. The save on your device is not affected.

Depending on where you live, you have the right to access, correct or delete your personal data, to restrict or object to its processing, to data portability, and to withdraw consent at any time. To use these rights, email us. You can also complain to your data protection authority (in Switzerland the FDPIC, in the EU the authority of your country).

Permissions

The app uses internet access for sign-in, cloud save, crash reports, statistics, ads and purchases, and vibration for haptic feedback. It does not request sensitive permissions such as precise location, contacts, camera or microphone.

Children

Luck Architect is not directed at children. The app contains optional advertising and real-money in-app purchases and is intended for a general (non-child) audience.

Changes to This Policy

If this policy changes, the updated version will be published on this page with a new "Last updated" date.

Contact

ICU Development
For privacy-related questions and requests: icu.app.development@gmail.com