Privacy Policy

Last updated: October 15, 2026

This Privacy Policy describes Our policies and procedures on the collection, use and disclosure of Your information when You use the Service and tells You about Your privacy rights and how the law protects You.

By using the Service, You agree to the collection and use of information in accordance with this Privacy Policy.

Summary

• Chengel has no account. We do not ask for Your name, email address or phone number.
• Your chosen languages, level, puzzle progress, learned words, coins and settings are stored on Your Device. If You are signed in to iCloud, they are also synced through Your own private iCloud storage so Your progress follows You to Your other devices. We cannot read it.
• Chengel shows ads from Google AdMob. To do so, Google's advertising software collects some device information. You choose whether ads are personalized, and You can change Your choice at any time.
• We use Firebase Analytics, Firebase Crashlytics and Firebase Remote Config (Google) to understand how the Service is used, to find and fix crashes, and to adjust settings such as how often ads appear. Where the law requires consent, analytics follows Your choice.
• We do not sell Your data.

Interpretation and Definitions

Interpretation

The words whose initial letters are capitalized have meanings defined under the following conditions. The following definitions shall have the same meaning regardless of whether they appear in singular or in plural.

Definitions

For the purposes of this Privacy Policy:

Application

refers to Chengel, the software program provided by the Company.

Company

(referred to as either "the Company", "We", "Us" or "Our" in this Privacy Policy) refers to Chengel, developed by Bahadır Sönmez.

Country

refers to: Turkey

Device

means any device that can access the Service such as a cell phone or a digital tablet.

Personal Data

(or "Personal Information") is any information that relates to an identified or identifiable individual.

Service

refers to the Application.

Service Provider

means any natural or legal person who processes data on behalf of the Company, such as the third parties that provide advertising or storage to the Service.

Usage Data

refers to data collected automatically, either generated by the use of the Service or from the Service infrastructure itself.

You

means the individual accessing or using the Service, or the company, or other legal entity on behalf of which such individual is accessing or using the Service, as applicable.

Collecting and Using Your Personal Data

Data that stays on Your Device

To work, the Service stores the following on Your Device: Your chosen native and learning languages and level, the puzzle in progress, which words You have seen, learned or missed, Your streak and achievements, Your coin balance and purchase status, Your reminder time and display settings. This data is not sent to Us. Some usage events are also sent to Firebase as described under "Analytics, crash reports and settings".

iCloud sync

If You are signed in to iCloud, the Service syncs Your progress (levels, learned words, streak, achievements and coin ledger) between Your devices using Apple's CloudKit, in a private database that belongs to Your iCloud account. We do not have access to this database. Apple processes it under Apple's terms and privacy policy. You can switch iCloud off for Chengel in iOS Settings, and You can delete the data in Settings → Apple ID → iCloud → Manage Storage → Chengel.

Advertising

The Service shows rewarded and full-screen ads using Google AdMob (Google LLC). When an ad is requested or shown, Google's Mobile Ads SDK may collect and use information such as Your IP address, device and operating system information, app information, ad interactions, and device identifiers. If You allow tracking in the iOS prompt, this includes the advertising identifier (IDFA); if You decline, ads are not personalized using that identifier.

Where required by law (for example in the European Economic Area, the United Kingdom and some US states), the Service asks for Your consent with Google's consent message before ads are requested. You can review or change Your choice later in Chengel under Profile → Privacy choices. You can also turn off tracking for Chengel in iOS Settings → Privacy & Security → Tracking.

How Google uses this data is described at policies.google.com/technologies/partner-sites and in Google's Privacy Policy. Buying "No Ads" removes full-screen ads; ads that You choose to watch for extra coins remain available and use the same data as above.

Purchases

In-app purchases are processed by Apple through the App Store. We do not receive or store Your payment details. The Service checks Your purchases with StoreKit on Your Device. When a purchase completes, the product, its price and currency are sent to Firebase Analytics so We can measure revenue; this does not include any payment details.

Notifications

If You turn on the daily reminder, the Service schedules a local notification on Your Device at the time You choose. It does not use a push notification server and nothing about it is sent to Us.

Analytics, crash reports and settings

The Service uses Firebase Analytics, Firebase Crashlytics and Firebase Remote Config, provided by Google LLC.

• Analytics collects an app-specific installation identifier, app and device information (such as the model, operating system version, language, country and time zone), approximate location derived from the IP address, and events about how You use the Service: for example which onboarding pages You see, starting, finishing or leaving a puzzle and how far You got, the help You use, the rewards and coins You collect, the ads shown, purchases, and the screens You open. It also records Your chosen languages, level, daily goal and display settings. We use this to see where players get stuck or stop, and to improve the Service.
• Crashlytics sends a crash report when the Service crashes or hits a serious error: the technical details of the problem, device and operating system information, the same installation identifier and the last steps taken in the app before the crash.
• Remote Config downloads settings for the app, such as how many days after installation full-screen ads start and how often they appear. It uses the installation identifier and basic device information.

Firebase Analytics does not collect the advertising identifier (IDFA) or Apple's identifier for vendors, We do not use Google signals, and We do not use analytics data for personalized advertising. We do not set a user ID and We do not send Your name, email address or the content of Your progress to Firebase. Where the law requires consent (for example in the European Economic Area and the United Kingdom), analytics stores no identifiers until You answer the consent message, and afterwards follows Your choice. You can change it later under Profile → Privacy choices. Google processes this data under its own terms: firebase.google.com/support/privacy.

If You have chosen to share analytics with app developers in iOS settings, Apple may also provide Us with aggregated and anonymous information about crashes and usage.

Use of Your Personal Data

The data above is used only:

• to provide and maintain the Service, including keeping Your progress and purchases;
• to show ads, and to limit how often they appear;
• to understand how the Service is used, find where it is hard or crashes, and improve it;
• to answer Your requests when You contact Us, using the email address You write from;
• to comply with the law and protect the Service from abuse.

We may share Your Personal Data in these situations only:

• With Service Providers: Google (advertising through AdMob; analytics, crash reports and app settings through Firebase) and Apple (App Store purchases, iCloud), as described above.
• For business transfers: in connection with a merger, sale of assets, financing or acquisition of all or part of Our business.
• With Your consent, or when the law requires it.

Retention of Your Personal Data

Data on Your Device stays until You reset progress in the app or delete the app. Note that iOS may keep the Keychain items the Service uses for Your coin balance and purchase status after the app is deleted; they are restored if You reinstall. Data in Your iCloud stays until You delete it as described above. Analytics data is kept by Google for the retention period set in Our Firebase project (at most 14 months); crash reports are kept for 90 days. Other data held by Google and Apple follows their own policies. If You email Us, We keep the message only as long as needed to answer You and for legal purposes.

Transfer of Your Personal Data

Google and Apple may process data in countries other than Yours, including the United States, where data protection laws may differ from those of Your jurisdiction. Where required, they rely on appropriate safeguards for such transfers.

Delete Your Personal Data

You can delete Your learning progress for a language in the app under Profile → Reset progress, delete the app to remove the data on Your Device, and remove iCloud data as described above. You can also email Us to ask what We hold about You or to have it deleted. Because the Service stores Your progress on Your Device and in Your iCloud, We usually hold no Personal Data about You other than emails You send. Analytics and crash data are tied only to an installation identifier, not to Your name; deleting the app starts a new identifier.

Your Rights

Depending on where You live (for example under the GDPR, the UK GDPR, Turkey's KVKK or US state laws), You may have the right to access, correct, delete or restrict the use of Your Personal Data, to withdraw consent, and to object to personalized advertising. You can use the controls described above or contact Us.

Security of Your Personal Data

The security of Your Personal Data is important to Us. Coin balance and purchase status are kept in the iOS Keychain. No method of electronic storage is 100% secure, so We cannot guarantee absolute security.

Children's Privacy

Our Service is not directed to anyone under the age of 13. We do not knowingly collect Personal Data from anyone under 13. If You are a parent or guardian and You believe Your child has provided Us with Personal Data, please contact Us and We will take steps to remove it.

Links to Other Websites

Our Service may contain links to other websites that are not operated by Us. If You click a third-party link, You will be directed to that third party's site. We strongly advise You to review the Privacy Policy of every site You visit. We have no control over and assume no responsibility for the content, privacy policies or practices of any third-party sites or services.

Changes to this Privacy Policy

We may update Our Privacy Policy from time to time. We will post the new Privacy Policy on this page and update the "Last updated" date at the top. If a change is material, We will also tell You in the Service before it takes effect. You are advised to review this Privacy Policy periodically. Changes are effective when they are posted on this page.

Contact Us

If you have any questions about this Privacy Policy, You can contact us by email: sonmezbahad@gmail.com