General Applications

Privacy Policy

Last updated: October 4, 2026

This Privacy Policy describes our policies and procedures regarding the collection, use, and disclosure of your information when you use our applications ("Applications"), and informs you about your privacy rights and how the law protects you.

This policy applies to all ABC App Studios applications intended for general audiences. For our applications designed for children, please refer to our Kids Privacy Policy.

CW Handshake (com.ysngvn.cwhandshake)

This app-specific section describes CW Handshake and applies wherever broader statements in this general policy differ.

CW Handshake is an offline Morse-code learning and simulated QSO practice app. It does not require an account. CW Handshake does not make network requests and does not send your lesson progress, practice statistics, Morse input, call signs, simulated contact logs, device identifiers, or diagnostics to ABC App Studios, analytics, or advertising services. The app has no analytics, advertising, or crash-reporting SDKs and displays no ads.

Your selected app language, lesson progress, practice statistics, active session, and completed simulated contacts are stored in the app’s private storage on your device. Standard Android cloud backup is disabled, although some device manufacturers may still transfer app data directly from one device to another.

CW Handshake does not access your microphone; it generates Morse tones for playback.

If you tap Export this record as ADIF, Android asks you to choose a destination for that single simulated contact. If you choose another app or a cloud document provider, that provider handles the exported file under its own terms and privacy policy; CW Handshake does not receive or retain the exported copy.

You can erase data stored by CW Handshake by clearing the app’s storage in Android settings or uninstalling the app; delete exported files separately from the destination you chose.

When you tap a privacy, support, or Play link in CW Handshake, it opens the relevant external browser, email app, or Play Store. The Support button opens an email draft without sending it. If you choose to send a support message, the information in that message is provided to us so we can respond. Any purchase of CW Handshake through Google Play is processed by Google Play under its own policy.

For help, visit the CW Handshake support page or email support@abcappstudios.com.

We are committed to protecting your privacy. Our Applications collect no personal data and contain no analytics or tracking SDKs. We do not display advertisements in our Applications. The only personal data we ever receive is what you choose to send us in an e-mail.

1. Interpretation and Definitions

Interpretation

Words with capitalized initial letters 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:

  • Company (referred to as "the Company", "We", "Us" or "Our") refers to Yasin Güven (operating as ABC App Studios), based in Kocaeli, Turkey.
  • Applications refers to the mobile software programs published by the Company on Google Play, intended for general audiences.
  • Service refers to the Applications.
  • Device means any device that can access the Service, such as a mobile phone, computer, or digital tablet.
  • Personal Data (or "Personal Information") is any information that relates to an identified or identifiable individual.
  • Usage Data refers to data collected automatically, such as the duration of use, screens viewed, and other diagnostic data.
  • You means the individual accessing or using the Service.

2. Data Collection and Use

Information We Do NOT Collect

Our Applications do not collect:

  • Names, email addresses, phone numbers, or physical addresses
  • Precise location data
  • Photos, videos, or files from your device
  • Contact lists or calendar data
  • Financial or payment information (payments are handled entirely by Google Play)

Usage Data

We collect no usage data. Our Applications contain no analytics, measurement or crash-reporting SDK of ours, so no device identifier, session statistic or diagnostic report is gathered or transmitted to us. Google Play may collect its own statistics about installs and crashes as the distributor; that data is held by Google under its own policy and we receive no personal data through it. A few Applications include Google components that send their own technical metrics to Google; they are listed under Third-Party Services, and we receive none of that data either.

Data Required for App Functionality

Some of our Applications store data they need to work, such as your settings, preferences or the content you create. This data is stored locally on your device. We operate no server for our Applications, so it is never transmitted to us. If Android backup is turned on for your device, Android may include some of this data in the backup it keeps in your own Google account; that backup is managed by you and Google, and we have no access to it.

Device Permissions

Some Applications ask Android for a permission so a feature can work. A permission lets the Application use something on your device while you are using that feature; it does not mean anything is collected or sent to us.

  • Camera — requested by CamGrid, Clean HDMI Out, Moon Pointer, Mover and Qibla Direction, each to provide its own core feature: a live camera view, on-device movement tracking, or an augmented-reality overlay. Camera access is used only while that feature is on screen.
    Clean HDMI Out and Qibla Direction do not request internet access at all, so their camera images cannot leave your device. Mover analyses your movements with Google ML Kit entirely on your device, and Moon Pointer draws its overlay with Google Play Services for AR (ARCore); neither Application makes network calls of its own (see Third-Party Services for the Google components). We operate no server that receives camera images, and no image is uploaded to us.
  • Document scanning — PDF Tool does not request the camera permission itself. When you scan a document it opens Google's document scanner, which runs inside Google Play services on your device and asks for camera access on its own; the scanned pages are handed back to PDF Tool on your device. Text recognition also runs on your device. PDF Tool makes no network calls of its own (see Third-Party Services).
  • Camera video between your own devices — CamGrid is the one exception and it is worth stating plainly: one device shares its camera and another displays it. That video travels directly between your two devices over your local network. The devices find each other on that network and connect to each other; no relay server, and no server of ours, is involved at any point.
  • Location — requested by Moon Pointer and Qibla Direction so each can calculate a direction or time that depends on where you are standing: Moon Pointer to work out where the Moon and the Sun are in the sky relative to you, Qibla Direction to compute the direction to Mecca and local prayer times. Both read your position through the location service of Google Play services on your device, and the calculation itself happens entirely on your device. Neither Application operates a server, and neither Application sends your location to us or to anyone else. This is also why the "Information We Do NOT Collect" list above says we do not collect precise location data: the permission lets the Application read your location to do its own math, not to send it anywhere. (How Google Play services itself handles location, for example when your device's Google Location Accuracy setting is on, is governed by Google's policy; see Third-Party Services.)
    Qibla Direction also keeps your last known location cached on your device so the compass and prayer times keep working offline, and lets you save locations by name. Moon Pointer has Android backup switched off, so its data is never included in a device backup. Qibla Direction does not: if Android's built-in backup is turned on for your device, that cached location and any locations you saved are included, the same as the rest of its data described under "Data Required for App Functionality" above.
  • Photos and videos — requested by EXIF Viewer so it can read the details stored in the photos and videos you open, including the place a photo was taken if the file contains it. On Android 10 and later the system hides the place a photo was taken until you grant EXIF Viewer a separate permission to read the location saved in photos; the app asks for it from the details screen of a photo that has a location, and everything else works without it. Location is hidden in the app by default and shown only when you turn it on. The files are read on your device; EXIF Viewer does not request internet access, so nothing it reads can be sent anywhere.
  • Notifications — requested by Qibla Direction so it can remind you when a prayer time arrives, and to show a one-time notice if its automatic mode switches the calculation authority it uses for your country; both are scheduled and shown entirely on your device, with nothing sent to us. You can turn notifications off at any time in your device settings; the rest of the Application keeps working.
    Qibla Direction also asks Android to be told when your device finishes restarting, so it can put the prayer-time reminder back in place — Android clears scheduled reminders on restart, and without this the reminder would stay frozen until you next opened the Application. This, too, happens entirely on your device.
  • No permissions at all — Endless Combat Arena asks Android for nothing: no internet access, no camera, no notifications, no account. Your high score is written to a single file inside the Application's own storage on your device and is never transmitted anywhere.

Any of these permissions can be withdrawn in Android's app settings. The feature that needs the permission stops working; nothing else changes.

E-mails You Send Us

If you write to us at support@abcappstudios.com, we receive what you put in that e-mail: your e-mail address, your name if your mail program includes it, and whatever you choose to tell us. This is the only personal data that ever reaches us, and it reaches us only because you sent it. We use it only to answer you and to fix the problem you report; we never add you to a mailing list, and we never sell or share it.

Use of Your Data

Apart from the e-mails you send us, we collect no data, so there is none to use, share or sell. Preferences and content created in an Application stay on your device unless you deliberately send them to a server you configured.

3. Third-Party Services

Our Applications embed no advertising, analytics or tracking SDK. Every Application is distributed by Google Play, which also processes purchases under its own policy.

PDF Tool and MTU Finder may occasionally show Google Play's own "rate this app" card after you successfully finish a task or measurement. The card is drawn by the Google Play Store, not by the Application: anything you type in it goes to Google Play as a public review under Google's own policy, and the Application never receives it. The Application only keeps, on your device, the date you first used it, a count of completed tasks and the date it last asked for the card, so that it does not ask often.

A few Applications also rely on Google components that are part of, or delivered through, Google Play services on your device. Google operates them under the Google Privacy Policy; we receive no data from them:

  • Google Play services location — used by Moon Pointer and Qibla Direction to read your device's position, as described under Device Permissions above.
  • Google Play Services for AR (ARCore) — Moon Pointer runs on Google Play Services for AR (ARCore), which is provided by Google and governed by the Google Privacy Policy. Moon Pointer uses ARCore only for its on-device camera overlay and does not use ARCore's cloud-based features.
  • Google ML Kit — used by Mover (movement tracking) and PDF Tool (document scanner and text recognition). ML Kit processes the images and text entirely on your device and does not send them or the results to Google. According to Google, ML Kit may contact Google's servers to receive updates and models and sends Google metrics about how the ML Kit components perform and are used in the Application.

Some Applications connect to a server or device that you choose and configure — for example a file server on your own network. Those connections go only to the address you enter; we operate no server, receive no copy of your data and have no access to it.

Lanwall (IP camera wall for Android TV) connects only to the cameras and recorders whose addresses you enter. Their video is decoded and shown on your TV and is never recorded, uploaded or sent to us; we operate no server and never see your cameras. Camera names, addresses and user names are stored on your TV; camera passwords are stored separately, encrypted with a key kept in the Android Keystore of that TV, and are never included in Android backups. If Android backup is on, your camera list without passwords may be included in the backup Android keeps in your own Google account. The optional "Add from phone" page works only on your home network while that screen is open on the TV; the details you type there travel over your local network without HTTPS, so use it only on a network you trust. Lanwall asks Android only for network access (internet and local network access, network state) and to keep the screen awake; it has no camera, microphone or location permission. Cameras may capture other people: you are responsible for using them in line with the privacy laws that apply to you.

One Application, Fiyatlar: Döviz Altın Yakıt (Prices), automatically requests exchange-rate, gold, fuel and commodity price data from four fixed third-party providers built into the Application — finans.truncgil.com, lisansws.epdk.gov.tr (EPDK, the Turkish Energy Market Regulatory Authority's public fuel-price service), api.gold-api.com and www.eia.gov (U.S. Energy Information Administration, for the Brent crude oil price). Unlike the user-configured connections described above, you do not choose or enter these addresses; they are the Application's built-in data sources. Each request is a standard HTTPS request: your device's IP address reaches that provider as an inherent part of the connection, the same as with any website or API call, and the request identifies the Application by name in its standard User-Agent header ("Prices"); beyond that it carries no personal data and no other identifier — only the price data itself is requested and displayed.

We do not use any advertising SDKs or services. Our Applications do not display advertisements.

These third-party services have their own privacy policies that govern how they collect and use data. We encourage you to review their policies.

4. In-App Purchases

Some of our Applications offer in-app purchases. All purchase transactions are processed entirely through Google Play. We do not collect, store, or have access to your payment information (such as credit card numbers or billing addresses). Please refer to Google's Privacy Policy for information on how Google handles your payment data.

5. Data Retention

We hold no user data from our Applications: what an Application stores stays on your device and is deleted when you clear the Application's data or uninstall it.

The only data we keep is the e-mail correspondence you send us. We keep it only as long as we need it to answer you and to handle any follow-up about the same question, and after that only where the law requires us to keep it or where it is needed to establish, exercise or defend a legal claim. You can ask us at any time to delete your correspondence.

Data that Google Play or Google Play services collect (for example install statistics, purchase records or crash reports gathered by Android) is retained by Google under its own policy, not by us.

6. Transfer of Your Data

Because our Applications send us no data, there is no Application data for us to transfer. Your location, camera images, files and settings stay on your device, except where you yourself send them to a server or device you chose.

E-mails you send to our support address are passed on by our domain's e-mail forwarding service (Cloudflare) and stored by our e-mail provider, Google (Gmail). Their servers may be located outside your country, where data protection laws may differ. We do not pass your e-mails on to anyone else.

Data handled by Google Play and Google Play services is processed by Google under its own policy and safeguards.

7. Your Rights

Depending on your jurisdiction, you may have certain rights regarding your personal data. Since the only personal data we hold is e-mail correspondence you sent us, these rights apply to that correspondence:

  • Right of Access: You can ask whether we hold any e-mails from you and receive a copy.
  • Right to Rectification: You can ask us to correct inaccurate information in that correspondence.
  • Right to Erasure: You can ask us to delete your correspondence.
  • Right to Restriction: You can ask us to limit how we use it.
  • Right to Data Portability: You can ask for a copy in a common format.
  • Right to Object: You can object to our use of it.

Data stored by an Application on your device is under your own control: you can delete it at any time by clearing the Application's data or uninstalling it. For data held by Google, please use the tools Google provides under its own policy.

To exercise any of these rights, please contact us at the email address provided below. We will respond to your request within a reasonable timeframe and in accordance with applicable law.

8. Security

Because our Applications send us no data, the security of what they store depends on your device. We take commercially reasonable measures to protect the e-mail correspondence we hold. However, no method of transmission over the Internet or method of electronic storage is 100% secure, and we cannot guarantee absolute security.

9. Disclosure of Data

We do not sell, rent or share personal data. The only personal data we hold is e-mail correspondence you sent us, and we disclose it only in the following cases.

Business Transactions

If the Company is involved in a merger, acquisition, or asset sale, the correspondence we hold may be transferred. We will provide notice before it is transferred and becomes subject to a different privacy policy.

Law Enforcement

Under certain circumstances, we may be required to disclose that correspondence if required to do so by law or in response to valid requests by public authorities (e.g., a court or a government agency).

Other Legal Requirements

We may disclose that correspondence in the good faith belief that such action is necessary to:

  • Comply with a legal obligation
  • Protect and defend the rights or property of the Company
  • Prevent or investigate possible wrongdoing in connection with the Service
  • Protect the personal safety of users of the Service or the public
  • Protect against legal liability

Our Service may contain links to other websites or services that are not operated by us. If you click on 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.

11. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date at the top.

You are advised to review this Privacy Policy periodically for any changes. Changes to this Privacy Policy are effective when they are posted on this page.

12. Contact Us

If you have any questions about this Privacy Policy, you can contact us: