Privacy Policy
ViDic · Last updated: July 16, 2026
ViDic is an AI-assisted vocabulary learning application operated by Epoch Lab (“ViDic,” “we,” “us,” or “our”). We collect only the information reasonably necessary to provide accounts, vocabulary-learning features, AI-generated educational content, purchases, advertising, notifications, security, and app improvement. We do not sell personal information for money. ViDic is a general-audience service and is not directed to children under 13.
This Privacy Policy explains what information we collect, why we use it, when it may be shared with service providers, how long it is retained, and the choices and rights available to you. By using ViDic, you acknowledge the practices described in this Policy.
1. Scope and Definitions
This Policy applies to the ViDic mobile application and related services, websites, support channels, and backend systems that link to this Policy (collectively, the “Service”).
- Personal Data means information that identifies, relates to, or can reasonably be linked with an individual or device.
- Usage Data means technical and interaction information generated when the Service is used.
- Service Provider means a company that processes information on our behalf to provide infrastructure, AI, analytics, advertising, payment, authentication, notification, or support services.
2. Information We Collect
2.1 Account and sign-in information
When you sign in using Google or Apple, we may receive and store:
- A service-generated user identifier, such as a Firebase user ID;
- Your email address, including an Apple private relay address when you choose “Hide My Email”;
- Your display name and profile image, when provided by the sign-in provider;
- The sign-in provider used and authentication status; and
- Account creation time, last sign-in time, and account status.
We do not receive your Google or Apple account password.
2.2 Vocabulary and learning information
To provide and synchronize learning features, we may process:
- Words, phrases, languages, or learning requests you search for or submit;
- Generated meanings, translations, example sentences, pronunciation information, audio, and educational images;
- Saved words, recent searches, study history, memorized or review status, progress, and preferences;
- Counts such as searches, study sessions, app opens, or completed learning activities; and
- Feedback, image reports, safety reports, and support requests you submit.
Please do not enter confidential, financial, medical, government-identification, or other highly sensitive personal information into vocabulary searches or AI features.
2.3 AI feature inputs and outputs
ViDic uses artificial intelligence to create educational content, which may include vocabulary explanations, translations, example sentences, pronunciation or text-to-speech audio, and AI-generated images. To provide these features, we may send the following information to an AI service provider:
- The word, phrase, selected language, and instructional prompt required for the request;
- Limited technical or safety information needed to prevent abuse and operate the feature; and
- The generated response returned to ViDic.
We design prompts and safety controls to produce educational content, but AI output may occasionally be inaccurate, unexpected, or unsuitable. Users can report problematic content within the Service where a reporting feature is available.
2.4 Device, diagnostics, and usage information
We and our service providers may automatically collect limited technical information, including:
- Device type, operating system, language, country or region derived from settings, and app version;
- IP address, network information, timestamps, session events, and approximate region inferred from an IP address;
- Firebase installation identifiers, push-notification tokens, and other app-instance identifiers;
- App interactions, screens viewed, feature usage, performance, crash reports, and diagnostic logs; and
- Security, fraud-prevention, and abuse-detection information.
ViDic does not collect precise GPS location unless a future feature clearly requests permission and this Policy is updated before collection begins.
2.5 Advertising information
If advertisements are shown, Google AdMob and related Google services may process:
- Advertising identifiers or similar resettable device identifiers;
- IP address, device and app information, ad interactions, and diagnostic information;
- Consent choices and whether personalized or non-personalized advertising is permitted; and
- Approximate location inferred from an IP address, where permitted.
Where required by law, we request consent before using information for personalized advertising. You can also limit ad personalization through your device settings. If ViDic is configured for users who are not eligible for personalized advertising, we may request non-personalized or otherwise restricted ads.
2.6 Purchase and subscription information
Purchases are processed by Apple App Store or Google Play. We do not receive or store your full payment-card number. We may receive:
- Product or subscription identifier;
- Purchase token, transaction identifier, receipt, purchase date, expiration date, and renewal status;
- Store platform and country or currency information provided by the store; and
- Refund, cancellation, billing-retry, or entitlement status.
2.7 Communications and support
If you contact us, we may collect your email address, message, attachments, device or account details you provide, and information needed to investigate and respond.
3. Information We Do Not Intentionally Collect
ViDic does not intentionally request or collect:
- Precise GPS location;
- Government identification numbers;
- Payment-card details;
- Health, biometric, racial, religious, political, or sexual-orientation information;
- Your contacts or social-media contact lists; or
- Camera or photo-library content, unless ViDic later introduces a feature that clearly asks for permission and updates this Policy.
4. How We Use Information
We use information to:
- Create and authenticate accounts;
- Generate and deliver vocabulary explanations, translations, examples, pronunciation audio, and educational images;
- Save and synchronize search history, wordbooks, learning progress, and preferences;
- Process subscriptions, purchases, entitlements, and restoration of purchases;
- Send requested service notifications and, with permission, learning reminders or product updates;
- Display and measure advertisements where applicable;
- Detect fraud, misuse, unsafe requests, technical failures, and security threats;
- Analyze performance and improve reliability, usability, and learning features;
- Respond to support, privacy, and legal requests; and
- Comply with law and enforce our terms and policies.
5. Legal Bases for Processing in the EEA, UK, and Similar Jurisdictions
Where applicable, we rely on one or more of the following legal bases:
- Performance of a contract: to provide the account, learning, AI, purchase, and synchronization features you request;
- Consent: for optional notifications, personalized advertising, analytics, or other processing where consent is required;
- Legitimate interests: to secure, maintain, troubleshoot, measure, and improve the Service, provided those interests are not overridden by your rights; and
- Legal obligation: to comply with tax, accounting, consumer-protection, law-enforcement, and other legal requirements.
You may withdraw consent at any time through the applicable app or device controls. Withdrawal does not affect processing that occurred before withdrawal.
6. Service Providers and Disclosures
We do not disclose Personal Data except as described below.
| Provider or category | Purpose | Examples of information processed |
|---|---|---|
| Google Firebase | Authentication, cloud database, storage, push notifications, analytics, crash reporting, security, and backend infrastructure, depending on enabled services. | User ID, email, learning records, app-instance ID, push token, usage events, device and diagnostic information. |
| Google Sign-In | Account authentication. | Provider account identifier, email, name, profile image, and authentication tokens. |
| Sign in with Apple | Account authentication. | Apple user identifier, email or private relay email, name when initially shared, and authentication tokens. |
| OpenAI | AI-assisted educational text, translation, pronunciation or text-to-speech, analysis, and image generation. | Words, phrases, prompts, language settings, generated content, and limited technical or safety metadata. |
| Google AdMob | Advertising, frequency control, fraud prevention, consent management, and measurement. | Advertising or app-instance identifiers, IP address, device/app information, consent choices, ad events, and diagnostics. |
| Apple App Store / Google Play | In-app purchases, subscriptions, refunds, entitlement verification, and purchase restoration. | Transaction and product identifiers, receipts or purchase tokens, dates, and subscription status. |
| Infrastructure and support providers | Hosting, networking, security, email, customer support, and operational services. | Only information reasonably necessary to perform the relevant service. |
These providers process information under their own terms and privacy policies. Relevant references include:
- Google Privacy Policy: https://policies.google.com/privacy
- Firebase Privacy and Security: https://firebase.google.com/support/privacy
- OpenAI Privacy Policy: https://openai.com/policies/row-privacy-policy/
- Apple Privacy Policy: https://www.apple.com/legal/privacy/
We may also disclose information:
- When you direct us to or give consent;
- To comply with applicable law, court orders, or valid government requests;
- To protect users, the public, our rights, security, and property;
- To investigate fraud, abuse, or violations of our terms; or
- As part of a merger, acquisition, financing, reorganization, bankruptcy, or transfer of all or part of our business, subject to appropriate notice and safeguards.
7. Sale and Sharing of Personal Information
We do not sell Personal Data for monetary consideration.
Some privacy laws define “sale” or “sharing” broadly and may treat the use of third-party advertising technology for cross-context behavioral advertising as a sale or sharing. Where applicable, you may opt out through an in-app privacy choice, consent form, device advertising settings, or by contacting us. We do not knowingly sell or share the Personal Data of children under 16.
8. Data Retention
We retain Personal Data only for as long as reasonably necessary for the purposes described in this Policy, including to provide the Service, maintain account and purchase records, comply with legal obligations, resolve disputes, prevent fraud, and enforce agreements.
- Account and learning data: generally retained while your account remains active and deleted or de-identified following a valid account-deletion request, unless retention is legally required.
- Transaction records: retained as necessary for purchase verification, accounting, fraud prevention, tax, and legal compliance.
- Support and safety records: retained as needed to resolve the request, document enforcement, and protect the Service.
- Diagnostics and usage records: retained for a limited period appropriate to troubleshooting, security, analytics, and app improvement.
- Backups: deleted data may remain temporarily in encrypted or access-controlled backups until those backups are overwritten according to normal retention cycles.
9. International Data Transfers
ViDic is operated from South Korea, and our providers may process information in South Korea, the United States, the European Economic Area, and other countries. These countries may have data-protection laws different from those in your location. Where required, we use appropriate contractual, organizational, or legal safeguards for international transfers.
10. Security
We use reasonable administrative, technical, and organizational safeguards designed to protect Personal Data, including authenticated access, access controls, encrypted transmission where supported, security monitoring, and service-provider restrictions. No internet transmission or storage system is completely secure, so we cannot guarantee absolute security.
11. Your Choices and Controls
- Account information: You may update available profile settings in the Service.
- Push notifications: You may disable notifications in your device settings.
- Advertising: You may limit ad personalization through the consent interface, app settings where available, and your device’s privacy or advertising settings.
- Analytics: Where consent is required, you may decline or withdraw consent through available privacy settings.
- Learning data: You may delete individual saved words or history where the app provides those controls.
- Account deletion: You may use the in-app account-deletion option, where available, or email us at epoch.lab@crepoch.com.
12. Your Privacy Rights
Depending on your location and subject to legal exceptions, you may have the right to:
- Request access to Personal Data we hold about you;
- Request correction of inaccurate Personal Data;
- Request deletion of Personal Data;
- Object to or restrict certain processing;
- Withdraw consent;
- Receive certain data in a portable format;
- Opt out of certain targeted advertising, sale, or sharing; and
- Complain to your local data-protection authority.
To exercise a right, contact epoch.lab@crepoch.com. We may need to verify your identity and authority before completing a request. We will not unlawfully discriminate against you for exercising a privacy right.
13. California Privacy Notice
This section supplements the Policy for California residents. In the preceding 12 months, ViDic may have collected the following categories of personal information, depending on the features used:
| CCPA/CPRA category | Examples relevant to ViDic | Collected | ||
|---|---|---|---|---|
| Identifiers | Email, account/user ID, IP address, app-instance or advertising identifier. | Yes | ||
| Commercial information | Purchased product, subscription, entitlement, transaction status. | Yes, if you make a purchase | ||
| Internet or electronic network activity | App interactions, searches, sessions, ad interactions, diagnostics. | Yes | ||
| Approximate geolocation | Approximate region inferred from an IP address. | May be collected | ||
| Audio, electronic, or visual information | AI-generated pronunciation audio and images associated with learning requests; user-provided audio or images are not intentionally collected unless a future feature clearly requests them. | Limited | ||
| Inferences | Learning preferences or suggested review content based on study history. | Sensitive personal information | ViDic does not intentionally request sensitive personal information. Authentication credentials remain with Google or Apple. | No, except account access information as legally defined and strictly necessary |
We collect these categories from you, your device, authentication providers, app stores, and service providers. We use and disclose them for the business purposes described in Sections 4 and 6. We do not sell Personal Data for money. To opt out of processing that may legally qualify as “sharing” for cross-context behavioral advertising, use available advertising/privacy controls or contact us.
California residents may request to know, access, correct, delete, or obtain information about categories, sources, purposes, and disclosures, and may opt out of sale or sharing where applicable. Authorized agents may submit requests, but we may require proof of authorization and identity verification.
14. Children’s Privacy
We do not knowingly collect Personal Data from children under 13 without verifiable parental consent. If you are under 13, do not create an account, submit Personal Data, use personalized advertising features, or send information to us.
If we learn that we collected Personal Data from a child under 13 without legally sufficient consent, we will take reasonable steps to delete it. A parent or guardian who believes a child submitted Personal Data may contact epoch.lab@crepoch.com.
In countries where the minimum age for independent consent is higher than 13, users below that age must use the Service only with permission or consent from a parent or guardian as required by local law.
Because ViDic is currently a general-audience service rather than a child-directed service, the app-store target-audience declaration should be configured consistently with this section. If ViDic is later intentionally offered to children under 13, we will implement appropriate parental-consent, age-screening, advertising, SDK, data-minimization, and parental-rights measures before doing so.
15. AI-Generated Educational Content
AI-generated text, audio, and images are provided for educational and informational purposes. They may contain errors or unexpected results and should not be relied on as professional, medical, legal, financial, or safety advice. We may use automated and human-assisted safety processes to review reports, detect prohibited use, and improve the reliability of the Service. We do not use user learning content to create public profiles.
16. Third-Party Links
The Service may link to third-party websites or services. Their privacy practices are governed by their own policies, and we are not responsible for their independent practices.
17. Changes to This Policy
We may update this Policy to reflect changes in the Service, providers, laws, or data practices. We will post the revised version and update the “Last updated” date. Where required, we will provide additional notice or obtain consent before a material change takes effect.
18. Contact Us
For privacy questions, rights requests, account deletion, or concerns about a child’s information, contact:
- Service: ViDic
- Operator: Epoch Lab
- Country: South Korea
- Email: epoch.lab@crepoch.com
- Website: https://crepoch.com/