Privacy Policy

Last Updated: December 7, 2025
Effective Date: December 7, 2025

Introduction

This Privacy Policy ("Policy") describes how TKZO ("we," "us," or "our") handles your ("User") personal information and privacy in connection with the mobile application "SnapStudy+" ("App").

Please read this Policy carefully before using the App. By downloading or using the App, you agree to be bound by this Policy.

1. Information We Collect

1.1 Information Collected Automatically

The App automatically collects the following information to provide our services.

(a) Account Identifier

Content: Anonymous account identifier
Purpose: User identification, subscription management, usage tracking
Storage: Cloud servers
Note: This ID is not linked to personally identifiable information such as name or email address

(b) Usage Data

Content: AI analysis feature usage count, last usage timestamp
Purpose: Managing free plan usage limits
Storage: Cloud servers

(c) Purchase Information

Content: Subscription type, expiration date, purchase history
Purpose: Billing status management, subscription feature delivery
Storage: Payment processing service, cloud servers

(d) Advertising-Related Information

Content: Advertising identifier (IDFA), ad viewing history
Purpose: Ad delivery, ad effectiveness measurement
Storage: Advertising service provider
Note: On iOS 14.5 and later, App Tracking Transparency (ATT) permission is required. If not granted, non-personalized ads will be displayed

1.2 Information You Provide

(a) Captured Images

Content: Images captured by the camera or selected from the photo library
Purpose: Creating learning content
Storage: On device only
Note: Images are not uploaded to servers (except during AI analysis)

(b) Learning Data

Content: Scan history, extracted words, learning progress, correct/incorrect records
Purpose: Providing learning features, managing review schedules
Storage: On device only
Note: This data is not synced with servers and exists only on the device

1.3 Information Processed Temporarily

(a) Image Data for AI Analysis

Content: Image data sent when using the AI analysis feature
Processing Location: AI service provider
Storage: Immediately discarded after processing; not stored
Note: Only the processing result (list of extracted words) is returned to the App

2. How We Use Your Information

We use the collected information for the following purposes:

Purpose	Applicable Data
Providing App functionality	All
Managing user accounts	Account identifier
Subscription and billing management	Purchase information, usage data
Providing AI analysis feature	Image data (temporary)
Managing usage limits	Usage data
Delivering advertisements	Advertising-related information
Service improvement and analysis	Usage data
Customer support	Inquiry content

3. Sharing Information with Third Parties

We share information with the following categories of third-party services.

3.1 Authentication and Data Management Services (Google)

Shared Information: Account identifier, usage data, purchase information
Purpose: User authentication, data storage, server processing
Privacy Policy: https://policies.google.com/privacy

3.2 Payment Processing Services (RevenueCat)

Shared Information: Account identifier, purchase information
Purpose: Subscription management, purchase processing
Privacy Policy: https://www.revenuecat.com/privacy

3.3 Advertising Services (Google)

Shared Information: Advertising identifier, device information
Purpose: Ad delivery, ad effectiveness measurement
Privacy Policy: https://policies.google.com/technologies/ads

3.4 AI Service Provider (OpenAI)

Shared Information: Images for AI analysis (temporary, discarded after processing)
Purpose: Extracting important words
Privacy Policy: https://openai.com/privacy/
Note: Data sent is not used for AI model training

3.5 Other Disclosures

We may disclose information in the following circumstances:

When required by law
When necessary to protect the life, body, or property of users
When necessary to protect our rights or property

4. Data Storage and Management

4.1 Storage Locations

Data Type	Storage Location
Learning data and settings	On device only
Account and purchase information	Cloud servers (encrypted)

4.2 Retention Periods

Data Type	Retention Period
Account identifier	Duration of account
Usage data	Duration of account
Purchase information	As required by law
On-device data	Until app deletion

4.3 Security Measures

We implement appropriate technical and organizational measures to protect collected information. Communications are encrypted, and cloud servers comply with industry-standard security practices.

5. Your Rights

You have the following rights:

5.1 Access to Data

Learning data stored on your device can be viewed at any time within the App.

5.2 Deletion of Data

Deleting On-Device Data

Uninstalling the App will delete all data stored on the device
Individual scan history can be deleted from within the App settings

Deleting Server-Side Data

If you wish to delete data stored on our servers (account identifier, usage history, etc.), please contact us at the address provided below.

5.3 Controlling Ad Tracking

You can manage ad tracking permissions in iOS "Settings" > "Privacy & Security" > "Tracking."

5.4 Contact Us

For inquiries regarding your data, please contact us at the address provided at the end of this Policy.

6. Cookies and Tracking Technologies

6.1 Use in This App

The App does not use cookies as it is not a web browser-based application.

6.2 Ad Tracking

Advertising services may use advertising identifiers (IDFA) for ad delivery. On iOS 14.5 and later, the App Tracking Transparency (ATT) framework prevents tracking without user permission.

6.3 Third-Party Ad Links

Advertisements displayed in the App may contain links to third-party websites. We are not responsible for the privacy practices of these linked sites. Please review the privacy policy of any site you visit through these links.

7. Children's Privacy

The App is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If we learn that a child under 13 has used the App, we will promptly delete such information.

If you are a parent or guardian and believe your child has provided us with personal information, please contact us at the address provided below.

8. International Data Transfers

Information collected through the App may be processed on servers located outside Japan. We confirm that service providers implement appropriate security measures. For details on each service provider, please refer to Section 3.

9. Changes to This Policy

We may change this Policy due to legal changes, service updates, or other reasons.

9.1 About Changes

This Policy may be changed without prior notice due to legal changes or service updates. The updated Policy will be posted on this page with an updated "Last Updated" date. We recommend checking this page periodically.

9.2 Consent Through Continued Use

By continuing to use the App after changes are made, you are deemed to have agreed to the updated Policy.

10. Contact Us

If you have any questions, comments, or requests regarding this Policy, please contact us at:

Contact:
Email: snapstudyplus@tkzo.jp

Supported Languages: Japanese, English

11. Governing Law

This Policy shall be governed by and construed in accordance with the laws of Japan.