This English version is provided for convenience; the Korean version prevails in case of any discrepancy.

Effective Date: January 25, 2026
Last Updated: September 26, 2026

Personal Information Controller

Company NameLearningSoft
RepresentativeOH Taehyung
Business Registration No.814-22-02165
Business AddressGyeongsangnam-do, Changwon-si, Uichang-gu, Buk-myeon, Gamgye-ro 187beon-gil 9, 110-dong 502-ho (Changwon Fore Hills Desian)

1. Purposes of Processing Personal Information

SajuLab (hereinafter the "Service"), operated by LearningSoft, processes personal information for the following purposes. The personal information being processed is not used for any purpose other than those below, and if the purpose of use changes, we will take the necessary measures, such as obtaining separate consent.

2. Personal Information We Collect

We collect only the minimum information. We collect only the information strictly necessary to generate readings, and we do not collect unique identification information, such as resident registration numbers, or sensitive information.

When a reading is generated (required)

Items collected Date of birth, time of birth (optional), gender, name or nickname (for personalizing some content)
Purpose of collection Working out your saju (the Korean reading of your birth date and time) and generating reading and Destiny Book content
Retention period For as long as the issued Destiny Book and reading records are preserved (destroyed immediately upon the User's request for deletion)

When the Destiny Book is sent by email (optional)

Items collected Email address
Purpose of collection Sending the Destiny Book
Retention period Kept together with the issuance record after delivery; destroyed immediately upon request for deletion

When a non-member requests a result link (optional)

Items collected Email address
Purpose of collection Sending a personal link (by email) that lets the User reopen a reading paid for without signing up on another device
Retention period Destroyed 90 days after collection; destroyed immediately upon request for deletion

When requesting a "your Destiny Book is ready" notice (optional)

Items collected Email address
Purpose of collection Sending, by email, a link to the Destiny Book or to My Readings once the paid Destiny Book is finished
Retention period Destroyed 180 days after collection; destroyed immediately upon request for deletion

When signing in with Google (optional)

Items collected Google account identifier, name, profile image, email address
Purpose of collection Identifying members and providing personalized features such as favorites and viewing history
Retention period Until the member withdraws (disconnects the account)

Automatically collected items

When making a payment

Paid transactions are processed by our online reseller and Merchant of Record, Paddle.com, and the Service does not directly collect or store payment method information such as card numbers. The Service keeps only the payment approval result (order number, payment amount, and payment date and time).

3. Processing and Retention Periods of Personal Information

The Service processes and retains personal information within the retention and use period required by law or the period consented to at the time of collection.

4. Entrustment of Processing and Overseas Transfer of Personal Information

To provide the Service smoothly, the Service entrusts the processing of personal information as follows:

Google LLC
(Firebase / Google Cloud)
Service hosting, data storage (server location: United States), and service operation infrastructure
OpenAI, L.L.C. (USA) Generating AI reading text — the minimum information needed to generate a reading, such as date and time of birth and gender, is transmitted when the API is called, and API policies apply so that it is not used for training and is not retained after processing.
X.AI Corp. (USA) Generating the text of your Destiny Book — the minimum information needed to write it, such as date and time of birth and gender, is transmitted when the API is called.
Paddle.com (online reseller and Merchant of Record) Processing payments, invoicing, taxes and refunds for paid content — the email address and payment details you enter at checkout go to Paddle

When entering into an entrustment contract, we clearly stipulate compliance with personal information protection laws, restrictions on re-entrustment, and liability in the event of an incident.

5. Provision of Personal Information to Third Parties

As a rule, the Service does not provide Users' personal information to third parties. The following cases, however, are exceptions:

6. Destruction of Personal Information

When personal information is no longer needed, such as when the retention period has expired or the purpose of processing has been achieved, the Service destroys that personal information without delay.

7. Rights of Users and How to Exercise Them

As data subjects, Users may exercise the following rights:

These rights may be exercised by email (contact@learningsoft.store), and the Service will act on such requests without delay.

8. Measures to Ensure the Security of Personal Information

9. Use of Cookies and Similar Technologies

Advertising measurement tools

To measure advertising performance and provide interest-based advertising, the Service uses cookies, pixels, and similar technologies of the companies below. These tools send usage behavior information, such as pages visited and whether a payment was completed (order number and amount), along with device and browser information, to the respective companies; they do not send reading input information such as date of birth or name.

Meta Platforms, Inc. Meta Pixel — measuring Facebook and Instagram advertising performance and personalized advertising
Google LLC Google Analytics and Google Ads conversion tracking — usage statistics and advertising performance measurement
TikTok Pte. Ltd. TikTok Pixel — measuring TikTok advertising performance

10. Chief Privacy Officer

The Service has designated the following Chief Privacy Officer to take overall responsibility for personal information processing and to handle Users' complaints and remedies for damages related to personal information processing.

Person in charge OH Taehyung (Chief Privacy Officer)
Email contact@learningsoft.store

11. Changes to This Privacy Policy

This Privacy Policy applies from its effective date. If there are any additions, deletions, or corrections due to changes in laws or policy, we will give notice through announcements from 7 days before the changes take effect.

12. Remedies for Infringement of Rights

To obtain remedies for infringement of personal information, Users may apply for dispute resolution or counseling to organizations such as the Personal Information Dispute Mediation Committee and the Personal Information Infringement Report Center of the Korea Internet & Security Agency (KISA).

Addendum

This Privacy Policy takes effect on January 25, 2026, and was amended on August 31, 2026, on September 14, 2026 (addition of the notice on advertising measurement tools), and on September 26, 2026 (addition of the Destiny Book completion notice by email).