HandyMeds Privacy Policy

English translation. This is an English translation of the Korean privacy policy for 약챙겨 (HandyMeds: Medication Reminder). The Korean original is published at demian-studio-policy.pages.dev/yakchaenggyeo/privacy. The effective date and last updated date shown in section 12 are the same as those of the Korean original.

This English translation is provided for convenience. If there is any inconsistency between this translation and the Korean original, the Korean original prevails.

1. General

“약챙겨” (HandyMeds: Medication Reminder, hereinafter “the App”) is a medication management and reminder assistance app that helps users manage their own medication and take it on time. DEMIAN STUDIO, the business operating the App (“we”), treats users' personal information as important, and this policy explains what information the App stores and processes on the device and how it is processed.

Business name: 데미안 스튜디오 (DEMIAN STUDIO)
Contact email: privacy@demian-studio.com

The App has no account sign-up, shows no ads, and does not transmit users' medication or health information to our servers. All medication and health information is stored only inside the user's phone. However, the App communicates with the Google Play billing system in order to process premium subscription payments (see “Subscription and payment” below).

2. Key principles (summary)

No account — no sign-up or login is required.
No ads — the App does not display ads, and does not use any external program (SDK) for showing ads or for ad tracking.
No external transmission of medication or health information — the App does not transmit or store users' medication, dose, or health information to us or to any external server.
Limited scope of internet use — the internet is used only to process premium subscription payments (Google Play), and is not used to transmit medication or health information.
Local storage first — all information is stored only inside the user's phone (the app's dedicated storage area).
No external tracking or analytics — the App does not use external tools for analytics, advertising, or crash collection.

3. Information collected and stored

The App stores the information below inside the user's phone only when the user enters or selects it directly. We do not collect or transmit this information to any external server.

3.1 Medication management information

Medicine name
Dosage form (tablet, capsule, powder, liquid, and so on)
Dosing time of day (right after waking, on an empty stomach, morning, midday, evening, before bed, and so on)
Amount per dose
Reminder times
Reminder-related settings, such as whether reminders are enabled
Records of doses completed (taken)
Records of doses not taken this time (skipped)
Remaining quantity of a medicine
Low-stock threshold (the App reports low stock at or below this value)

The medication management information above is content that the user enters or selects directly. The App does not decide or recommend the amount per dose, the number of doses, the dosing time, or the type of medicine on its own.

3.2 Contact-for-help information (optional)

Name of the contact for help
Phone number of the contact for help
Photo avatar of the contact for help (one image chosen by the user)

3.3 App settings

Reminder sound setting (the type of reminder sound, or the reminder sound URI)
Text size setting

3.4 Scope of photo features (clarification)

The photo feature provided by the App is limited to the “photo avatar of the contact for help”.
Taking or uploading photos of medicines, recognizing medicines from photos (OCR), and AI medicine identification are not included in the scope of this release.
The contact photo avatar is one image the user selects with the phone's photo picker; it is stored in reduced size in the app's internal storage area, and no face recognition or analysis is performed on it.

The reminder sound setting stores only a reference that points to a reminder sound on the phone; the audio file itself is not copied or stored.

4. Where information is stored, and transmission

All of the information above is stored only inside the user's phone (the app's dedicated database, the app's dedicated settings storage area, and photo files stored inside the app).
The App does not transmit or store this information to us or to any external server. Internet communication is used only to process premium subscription payments (the Google Play billing system).
We do not transmit users' personal information to a server, and do not sell or share it with third parties. However, if the user chooses the “place a call” function, the phone number of the contact for help may be passed to, and shown in, the phone app installed on the user's device. This is not a transmission to our servers; it is an on-device action the user chose in order to place the call themselves (see section 5 for details).

5. Contact for help, and how calls are connected

The contact for help (name, phone number, photo avatar) is an optional feature that the user registers, edits, and deletes directly. Medication management and reminder features work normally even if no contact is registered.
When a call needs to be connected, the App works by opening the phone's dialer app together with the phone number. The App does not place a call automatically; whether a call actually takes place, and when it starts, is decided by the user directly in the phone app.
The App has no automatic calling, no automatic emergency calling (including South Korea's 119 emergency number), no automatic family calling, and no automatic emergency detection.

Note (to avoid confusion): the App does not transmit user information to an external server. However, if the user chooses to connect a call, that phone number is passed to the phone app on the user's own phone and the phone app screen opens. This is not a transmission to our servers; it is the action of opening the phone app inside the user's phone.

6. Backup policy (excluded from off-device backup)

The information the App stores on the phone is excluded from all of Android's automatic backup (full-backup), cloud backup (cloud-backup), and device transfer (device-transfer). This information is therefore not backed up or transmitted outside the user's phone (to the cloud or to a new device).

Items excluded from backup:

Medication management database (medicines, dosing schedule, dose records, stock)
Temporary storage files of that database (WAL/SHM)
Contact-for-help settings (name, phone number)
Contact-for-help photo avatar file
Reminder sound setting
Text size setting

The items above disappear together with the device when the user changes phones or deletes the App, and there is no path by which they can be restored from outside.

7. Retention period and how to delete

Deletion by the user: users can directly edit and delete medicine information, dose records, stock information, contact-for-help settings, and app settings inside the App.
When the App is deleted: deleting the App removes all of the App's information stored inside the phone from the device.
No account or server data: because the App has no account and stores no information on an external server, no separate procedure for requesting deletion of server data is needed.

8. Nature of health and medication information, and medical notice

The medication and health-related information referred to in this policy is medication management information that the user enters directly or that is recorded inside the phone in the course of using the App; it is not diagnostic, prescription, or medical judgment information.
The App is an assistive tool that helps with medication management and reminders, and does not do the following.
- It does not diagnose disease.
- It does not prescribe medicine.
- It does not recommend an amount per dose.
- It does not assess drug interactions or provide interaction warnings.
- It does not assess or recommend the effectiveness of supplements.
- It does not automatically judge emergency situations.
The App is not a medical device and is not a substitute for medical care.
If you have questions about taking medicine or about your health, please be sure to check with a professional such as a doctor or pharmacist.
The App also guides users, on its main screens, to check medication and health matters with a professional such as a doctor or pharmacist.

9. App permissions

The App uses the permissions below. It does not use the read-contacts permission or the call permission.

Show notifications (POST_NOTIFICATIONS)
Exact-time reminders (SCHEDULE_EXACT_ALARM)
Restore reminders after restart (RECEIVE_BOOT_COMPLETED)
Vibration (VIBRATE)
Internet (INTERNET) and network state (ACCESS_NETWORK_STATE) — used for premium subscription payment and for checking subscription status (Google Play)
In-app billing (com.android.vending.BILLING) — used for premium subscription payment (the Google Play billing system)
Photo selection takes place through the phone's photo picker, without a separate storage permission.

The App does not use the read-contacts (READ_CONTACTS) or call (CALL_PHONE) permissions. The internet, network, and in-app billing permissions are used only for the purpose of processing subscription payments, and do not transmit users' medication or health information externally.

Subscription and payment

Payment for the premium subscription (₩2,900 per month / ₩29,000 per year, with a 14-day free trial) is processed through the Google Play billing system. Payment method information such as card numbers is handled by Google and is not collected or stored by us. The App processes, through Google Play, only the information needed to check subscription status (whether the user has premium), and this information is not combined with the user's medication or health information. Subscriptions can be canceled at any time in Google Play.

10. Privacy officer and contact

Business name: 데미안 스튜디오 (DEMIAN STUDIO)

Contact email: privacy@demian-studio.com

For inquiries about this policy or about the processing of personal information, please contact us at the email address above.

11. Changes to this policy

If the contents of this policy are added to, deleted, or changed, we will announce the changes through the App or through a public page.

12. Effective date / Last updated

Effective date: 2026-06-29
Last updated: 2026-06-29