Lift Diary Privacy Policy

Version 1.0 · Effective date: October 30, 2026

This is a translation. If it differs from the Korean version, the Korean version prevails.

Change history: 1.0 (2026-10-30) Initial release of the Japanese and English versions

1. Personal information we collect

Lift Diary works without an account. Your workout records (exercises, sets, weight, reps, routines) are stored only on your device. They are not sent to us, the operator.

Category	Information	Purpose	Retention
Workout records	Exercises, sets, weight, reps, workout dates and times, routines, and settings	Provide the Service	Stored only on your device. Deleted when you uninstall the app or use Settings > Delete all data
Error information	Error details, app version, OS, and device model	Fix errors	90 days on servers in South Korea
App usage statistics	Screens and features used (for example, starting or finishing a workout, and counts such as the number of sets), app installation ID (a random number created when the app is installed), app name and version, OS type and version, device manufacturer and model, screen size, language and time zone, network type (Wi-Fi or mobile), and carrier name	Improve the app by understanding how many people use it, popular features, and steps where people get stuck	Kept for the retention period of our analytics service, PostHog (1 year). Not linked to personally identifying information

We do not ask for personal information such as your name, email address, phone number, height, or body weight.
Error information and app usage statistics do not include the IP address or content you enter in the app, such as exercise names and notes.
We count app usage statistics using a random number created when the app is installed. This is not a unique device identifier. It disappears when you uninstall the app, and a new number is created when you reinstall it. The number is not shared with other apps or used for tracking (linking information from other companies' apps or websites). We do not record your screen. We set up our analytics service, PostHog, so that it does not store IP addresses or infer locations from them. If you turn off Settings > Send usage statistics in the app, we stop sending them from that point.
When you export a backup file, it goes only to the place you choose, such as a files app or AirDrop. We do not receive it.

2. Where personal information is stored

Workout records: Stored only on your device and deleted when you uninstall the app.
Backup files (if created): The app's data is packaged into a single file, which you save or send to a place you choose, such as a files app. It is not sent to us.
Error information: Stored on a server in South Korea that we operate ourselves (Oracle Cloud, Chuncheon region).
App usage statistics: Sent to PostHog in the United States (section 8).

3. Sharing with third parties and outsourced processing

PostHog Inc. (United States): Analyzes app usage statistics (section 8).

4. Your rights

You can delete all records stored on your device right away with Settings > Delete all data in the app. Uninstalling the app also deletes them.
Turn off app usage statistics: Turn off Settings > Send usage statistics in the app. We stop sending them from that point. All features of the app keep working.
Contact: setlog@hyunjins.co.kr

You can review and delete your data using the options described above and by email to setlog@hyunjins.co.kr.

5. Children

Lift Diary does not require an account and does not collect personal information such as your name, so we do not check your age.

6. Do Not Track

Lift Diary does not respond to Do Not Track (DNT) browser signals. We do not track you across other companies' apps or websites.

7. Changes to this policy

We post the updated policy in the app and update the effective date. For important changes, we notify you in the app.

8. Data stored outside your country

We send error information to servers in the Republic of Korea (South Korea) and store it there. App usage statistics are sent to PostHog Inc. in the United States. If you live outside these countries, your information is transferred to them. You consent to this transfer when you agree to this policy and the Terms of Use. You agree when you start using the app.

Error information: Stored on a server we operate ourselves (Oracle Cloud, Chuncheon region) in South Korea.
App usage statistics (United States): Sent to PostHog US Cloud (Amazon Web Services data centers), operated by PostHog Inc., 2261 Market Street #4008, San Francisco, CA 94114, USA. It is set up not to store the IP address used when sending.

Countries of transfer: Republic of Korea, and the United States (app usage statistics only).

Your workout records stay on your device and are not sent to servers.

Korean privacy law: Korea has the Personal Information Protection Act. The Personal Information Protection Commission (PIPC) supervises it. Japan's Personal Information Protection Commission publishes a report on the Korean system: https://www.ppc.go.jp/files/pdf/korea_report.pdf

How we protect your data:

Only we, the operator, can access data on the servers we manage.
App usage statistics are not linked to personally identifying information. PostHog is set up not to store IP addresses or infer locations from them. PostHog's privacy policy: https://posthog.com/privacy
Error information and app usage statistics do not include content you enter in the app.
We keep error information for 90 days. App usage statistics are kept for the retention period of PostHog (1 year).

9. Privacy officer

Hyunjins (Representative: Jang Hyunjin) · setlog@hyunjins.co.kr

Business address: 6F, 25 Hyangchon 1-gil, Gwacheon-si, Gyeonggi-do, Republic of Korea