Updated On: 05/11/2025
Thank you for choosing Calculator Vault (referred to as "the App"). This Privacy Policy explains how we handle your information when you use our App. By using the App, you agree to the terms outlined in this policy.
Calculator Vault is a free Android application designed to help users securely hide and protect their photos, videos, audios, and files. The App also functions as a fully operational calculator, providing a discreet way to access hidden content.
This App is created and maintained by Users First App. We are committed to protecting your privacy and ensuring the security of your data. This Privacy Policy outlines the types of information we collect, how we use it, and the measures we take to safeguard it.
Calculator Vault does not collect, store, or share personally identifiable information such as your name, email address, or phone number.
However, To provide App functionality and for analytics or marketing purposes , the App may access and process the following categories of data:
User-Selected Content:
Content you choose to hide within the app is stored locally on your device and are never uploaded, accessed, or shared by us or any third party.
To provide App functionality, the App allows users to select and hide personal content, which may include:
Photos
Videos
Audio recordings
Music files
Documents
Other types of files (.zip, .rar etc)
These files are handled strictly for the purpose of enabling the App's functionality, to allow users to securely hide, view, and manage their private content.
Additionally, the App or its third-party SDKs may collect limited technical data to improve performance and user experience:
Device or Other IDs: We may access anonymized device identifiers, such as the App Set ID or Advertising ID (AD_ID), for purposes of analytics, advertising attribution, or consent management. This data does not personally identify you.
Crash Logs: Collected via Firebase Crashlytics to help detect and fix bugs. Logs include app state and device info at the time of the crash, but no personal or hidden file content.
Diagnostics Data: Includes anonymized performance and usage metrics (e.g., OS version, device model) used solely for analytics, in line with our Play Store Data Safety disclosure.
READ/WRITE EXTERNAL STORAGE (Android 11 and below):
Purpose: To enable secure file handling within the App's private storage on older Android versions.
Usage: On Android 11 and below, these permissions are required for the App to correctly manage files stored in its private external storage directory. These permissions are not requested or used on Android above 11. The App does not access any other files on the device outside of its own private storage.
POST_NOTIFICATIONS:
Purpose: To send notifications related to App functionality, such as alerts or reminders.
Usage: This permission allows the App to display notifications on your device.
WAKE_LOCK:
Purpose: To keep the device awake while performing certain tasks, such as moving files to the vault.
Usage: This ensures that the App can complete its operations without interruption.
ACCESS_NETWORK_STATE:
Purpose: To check your device’s internet connectivity for analytics and crash reporting purposes.
Usage: This permission helps the App determine whether your device is connected to the internet.
AD_ID:
Purpose: To access the Google Advertising ID, which is used to help provide personalized ads.
Usage: The Google Advertising ID allows us and our partners to deliver more relevant ads based on user behavior, and helps with measuring the performance of ads. This permission is required for apps targeting Android 13 (API level 33) or higher to comply with Google Play policies.
BIOMETRIC:
Purpose: To allow biometric authentication (such as fingerprint or facial recognition) for accessing the vault.
Usage: This provides a secure and convenient way for users to unlock their vault with biometrics, enhancing security.
The App uses the following third-party services to enhance functionality and improve user experience:
Google Play Services:
Used for core functionalities and integration with Google services.
Firebase:
Used for crash reporting and analytics to improve App performance and stability.
Google Analytics:
Used to collect anonymized usage data, such as how often the App is used and which features are most popular.
These third-party services may collect anonymized data, but they do not have access to your personal files or hidden content within the App.
Calculator Vault uses various third-party SDKs and Android libraries to deliver secure, smooth, and modern functionality. Below is a summary of the SDKs and their purposes:
Core AndroidX Libraries:
androidx.activity, androidx.appcompat, androidx.core, androidx.constraintlayout, androidx.navigation, androidx.viewpager2, androidx.databinding:viewbinding, androidx.biometric
These are standard Android libraries used for essential app components such as activity lifecycle handling, UI design, navigation, biometric authentication, and secure layout binding.
Google Firebase & Play Services
com.google.firebase:* (e.g., Analytics, Crashlytics, Messaging)
com.google.android.gms:play-services-appset
com.google.android.gms:play-services-ads
com.google.android.play:* (In-App Updates, Integrity, etc.)
com.google.android.ump:user-messaging-platform
These SDKs are used for analytics (anonymized usage tracking), crash reporting, ads display (if used), Play Store-related services, and managing user consent for privacy (e.g., GDPR or CCPA via UMP).
Media & Camera Functionality
com.google.android.exoplayer:*
com.github.bumptech.glide:glide
These libraries are used for media playback, and efficient image loading when handling user content.
UI & Animation Enhancements
com.google.android.material:material
com.airbnb.android:lottie
com.facebook.shimmer:shimmer
Used to enhance the app’s visual experience with Material Design elements, animations, and loading indicators to provide smooth and professional UI interactions.
Dependency Injection & Utility
com.google.dagger:hilt-android – Used for dependency injection to improve app architecture and performance.
org.jetbrains.kotlin:kotlin-stdlib – Core Kotlin library used for app development.
com.intuit.sdp:sdp-android – For responsive sizing on different screen resolutions.
commons-io:commons-io – For file and stream utilities used in managing hidden files securely.
These SDKs are used only to support app functionality and user experience. No SDKs in the app access or transmit your hidden content or personal files.
We take your privacy and data security seriously. All files hidden within the App are stored locally on your device.
We do not store your files on any cloud server, nor do we share them with any third parties. Your hidden data remains completely private and is securely stored in a protected directory on your device. Only you have access to it.
When you add a photo, video, or file to the vault, Calculator Vault deletes the original file from your device’s public gallery using Android’s DocumentsContract API. This deletion happens after you select the file using the system file picker, which grants the App access to manage that file.
You can restore any hidden file back to your gallery by removing it from the vault using the App's restore feature. All file actions happen locally on your device, we do not store or access your files externally.
For questions about file management or data rights, contact: digitzon77@gmail.com
If you decide to uninstall the App, all hidden and protected files will be permanently deleted. This is because the App stores your hidden files locally in its private storage, and uninstalling the App removes all associated data.
Important Note: To avoid data loss, we strongly recommend that you to restore all files to your device’s storage before uninstalling the App. Once the App is uninstalled, there is no way to recover the hidden files.
As Calculator Vault does not collect or store any personal information such as your name, email, or contact details, there is no personal data to correct. However, we respect your data rights. If you believe the App is storing any inaccurate information or have questions about your data, you may contact us at: digitzon77@gmail.com
Calculator Vault does not sell any personal data to third parties. We do not share, monetize, or trade your personal information, because we do not collect such data in the first place.
However, we respect your right to know how your data is used. If you have any questions about how your data is handled or whether it is shared with third parties, please contact us at: digitzon77@gmail.com
Calculator Vault does not share your personal data with any third parties. The App may use third-party services such as Firebase and Google Analytics to collect anonymized usage statistics to help improve performance and functionality. These services do not access or store any personal or hidden content.
We respect your right to transparency. If you have questions about how your data is used or shared, you can contact us at: digitzon77@gmail.com
Calculator Vault does not sell any personal data to third parties. Therefore, there is no data sale for users to opt out of.
However, we respect your rights under applicable privacy laws. If you have questions about how your data is handled or would like to confirm that no data sale is occurring, you can contact us at: digitzon77@gmail.com
Calculator Vault does not sell your personal data or use it for targeted advertising. We do not share personal information with advertising networks or use it for profiling purposes.
However, some third-party services we integrate with (e.g., Google AdMob) may use the Google Advertising ID (AD_ID) to provide non-personalized ads or analytics. While we do not control these services directly, you may opt out of ad personalization by following the instructions below:
On Android devices, open Settings > Google > Ads, then toggle on “Opt out of Ads Personalization”.
We do not engage in data sales, but if this changes in the future, we will update this Privacy Policy and provide a clear opt-out mechanism.
If you have questions or concerns about data usage or your rights, please contact us at: digitzon77@gmail.com
Calculator Vault does not collect or store any personal data on external servers. All content (including photos, videos, audio files, documents, and other hidden files) is stored locally on your device in a private, secure directory.
User-Controlled Data:
You have full control over your hidden content. You can delete or restore files at any time using the App’s built-in features.
If you uninstall the App, all hidden files are permanently deleted as part of the Android system’s app removal process.
We do not retain, store, or back up your data on any external server.
Technical Data:
Anonymized diagnostic and crash data (such as logs from Firebase Crashlytics) may be retained by third-party services for up to 24 months to improve app performance and stability. This data does not include any personal files or identifying information.
If you are a California resident, you have rights under the California Consumer Privacy Act (CCPA), including:
The right to know what personal data we collect and how it is used.
The right to request access to or deletion of your personal data.
The right to know whether your data is shared or sold (we do not sell personal data).
The right to opt out of any future sale of personal information.
The right to non-discrimination for exercising these rights.
Calculator Vault does not collect or store any personal data on our servers, and we do not sell or share your data for advertising purposes.
To exercise your rights under the CCPA or to make a data-related request, please contact us at: digitzon77@gmail.com
The data controller responsible for Calculator Vault is:
Users First App
Email: digitzon77@gmail.com
Although Calculator Vault does not collect or store personal information, you may contact us at any time regarding questions about privacy, data rights, or this policy.
Calculator Vault does not process personal data at a scale that requires appointing a formal Data Protection Officer under the GDPR. However, if you have any questions about data protection or privacy practices, please contact us at: digitzon77@gmail.com
If you are a resident of Virginia, you have rights under the Virginia Consumer Data Protection Act (VCDPA), including:
The right to know whether your personal data is being collected
The right to access, correct, or delete your personal data
The right to opt out of the sale of personal data or targeted advertising
Calculator Vault does not collect, store, or sell personal data. All files remain local to your device and are never uploaded or shared externally.
If you have any questions or wish to exercise your rights under the VCDPA, please contact us at: digitzon77@gmail.com
Calculator Vault may collect or transmit a Device Identifier (Device ID) through third-party services such as Firebase and Google Analytics. This identifier is used solely for the purpose of:
Improving app stability through crash reporting
Understanding general app usage patterns
Preventing fraud or abuse
This data is anonymized and is not linked to your personal files or any content stored within the App. We do not use Device ID data for advertising or user profiling.
If you are located in the European Economic Area (EEA), you have the right to lodge a complaint with your local data protection authority if you believe your data privacy rights under the General Data Protection Regulation (GDPR) have been violated.
Although Calculator Vault does not collect or process personal data, we are committed to handling all privacy concerns seriously. You can also contact us directly at digitzon77@gmail.com if you have any concerns or questions.
Under the General Data Protection Regulation (GDPR), we are required to explain the legal basis on which we rely when processing personal data. While Calculator Vault does not directly collect or store personal information, certain third-party services we use (such as Firebase, Google Analytics, or Google UMP) may process anonymized data.
Calculator Vault is not intended for use by children under the age of 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe that your child has provided us with personal information, please contact us immediately so we can take appropriate action.
If you are a resident of the European Union, you have the following rights under the General Data Protection Regulation (GDPR):
Right to Access: You have the right to request a copy of your personal data.
Right to Rectification: You have the right to request correction of any inaccurate or incomplete data.
Right to Erasure (Right to be Forgotten): You have the right to request the deletion of your personal data, where applicable.
Right to Restriction of Processing: You have the right to request the restriction of the processing of your data.
Right to Data Portability: You have the right to receive your personal data in a structured, commonly used format and to transfer it to another data controller.
Right to Object: You have the right to object to the processing of your personal data for marketing purposes.
Right to Withdraw Consent: If the processing of your data is based on consent, you have the right to withdraw it at any time.
To exercise these rights, or if you have any concerns about our data processing practices, you can contact us at digitzon77@gmail.com.
If you are a resident of Brazil, you have the following rights under the Lei Geral de Proteção de Dados (LGPD):
Right to Access: You have the right to obtain information about the personal data we process about you.
Right to Rectification: You have the right to request corrections to any incomplete, inaccurate, or outdated data.
Right to Deletion: You have the right to request the deletion of your personal data when it is no longer necessary for the purpose for which it was collected.
Right to Data Portability: You have the right to request that your personal data be transferred to another service provider or data controller.
Right to Object: You have the right to object to the processing of your personal data in certain circumstances, such as when you believe that processing is not compliant with the LGPD.
Right to Withdraw Consent: You have the right to withdraw your consent for processing at any time, where applicable.
To exercise these rights, or if you have any concerns about our data processing practices, you can contact us at digitzon77@gmail.com.
We may update this Privacy Policy from time to time. We encourage you to review this policy periodically to stay informed about how we are protecting your information.
If you have any questions or concerns about this Privacy Policy or the App’s functionality, please contact us at:
digitzon77@gmail.com
Thank you for trusting Calculator Vault with your privacy. We are committed to providing you with a secure and reliable experience.