OhMaCalendar Privacy Policy

Effective October 29, 2026

한국어 日本語

OhMaCalendar has no sign-up and doesn't send your events or personal information to the developer's servers. Here is what the app uses and where it goes.

Information that stays on your iPhone

• Calendar and Reminders: The app reads and saves the events and tasks in your iPhone's Calendar and Reminders. Syncing with accounts like iCloud or Google is done by your iPhone itself. The app doesn't upload any of it.
• Stickers, event colors, photos and secret events: These stay in the app's storage on this iPhone, and with iCloud backup on, in your iCloud too (below).
• Face ID: Your iPhone checks your face when you open a secret event. The app only learns whether the check passed.
• Adding events by voice: Your iPhone's speech recognition turns what you say into text. Where the device can do this on its own, it stays on the device; otherwise Apple's speech recognition service is used.
• Contacts: Only when you use "Add birthdays from Contacts" does the app read names and birthdays to make D-days. Only the people you pick are kept, in the app's storage, and nothing is sent anywhere.
• Notifications: The morning briefing, departure alerts and D-day notifications are scheduled on your iPhone. Secret events keep their titles hidden in notifications too.

Information that leaves your iPhone

• Map links: When you paste a Naver Map or Google Maps link into an event's URL field, the app opens that link once to find the place's name. The address is looked up with Apple Maps.
• Departure alerts (only when on): To work out the travel time, the app sends your location when you open it and the event's place to Apple Maps. Your location never reaches the developer and isn't stored.
• iCloud backup (on from the start, and you can turn it off): So a new iPhone or a reinstall can bring them back, your D-days, templates, stickers, event colors, photos, secret-event marks, lunar events and app settings are kept in your Apple Account's iCloud, in a private space of the app's own. To find the same events and calendars again on another device, event identifiers (UIDs) and each calendar's account name (such as a Gmail address) and calendar name are kept with them. Event titles and details aren't. Apple stores it, and the developer can't see it. You can turn it off or delete it all in [Settings > About > iCloud backup].
• More OhMa apps: So that the list at the foot of Settings shows only the apps your country's App Store has right now, the app asks Apple (the App Store) about once a day, sending those apps' numbers and your App Store country. Nothing about you is in the request, and nothing reaches the developer.
• Travel partner cards: Tapping the button on a travel card (an ad) in Long weekends opens a partner's website or app outside OhMaCal. The link carries only the first and last day of the break and where the card was, never your events or D-days. What happens after that follows the partner's privacy policy, and the developer earns a commission if you book through the link. How often the cards are seen and tapped is kept only on this device. If you've bought ad removal, no cards appear.
• Card settings: To change the cards' words and links without an app update, the app downloads a settings file from ohmalab.com about once a day. The request carries nothing about you. As with any request on the internet, the server briefly keeps the IP address and time, and we never link them to anything else.

Ads (Google AdMob)

An ad card appears at the end of the D-day list and in the D-day panel, starting a week after you first open the app and once you've saved 10 events. Google AdMob chooses and shows the ads. When you tap “Watch an ad to support the app” in Settings, the one ad shown then also comes from AdMob.

• What Google receives: a device identifier (not the advertising identifier, since the app doesn't ask to track you), an approximate location from your IP address, which ads you saw and tapped, and the app's performance and error information.
• What it doesn't: your events, D-days, tasks, contacts, photos and precise location never go into ads.
• Tracking: the app doesn't track you. It never asks for permission to track, and every ad is a non-personalized one, chosen without your activity in other apps and websites.
• Transfer abroad: this information goes over the internet to Google LLC (United States) each time an ad is shown, to show and measure ads, and is kept under Google's policies (Google Privacy Policy, how Google uses information from partner apps). If you'd rather not, "No ads" turns the ads off.

No ads (in-app purchase)

With it, no ad cards appear and no ad requests go to Google. Payment is handled by Apple in the App Store. Neither the app nor the developer receives your card number or other payment details. The app only asks the App Store whether this Apple Account bought "No ads" and remembers the answer on this iPhone. Apple keeps your purchase history, and refunds are requested from Apple.

What the app doesn't use

• Analytics tools that collect usage history
• Accounts, email addresses or phone numbers

Deleting

Deleting the app also deletes the stickers, colors and photos in its storage. What's backed up in iCloud stays, so to delete it, tap [iCloud backup > Delete all from iCloud] before deleting the app. Events and tasks saved to Calendar and Reminders stay in your iPhone's Calendar and Reminders apps.

Contact and privacy officer

For questions about the app or this policy, email the address below. The OhMaCalendar support page has common questions and how to reach us.

• Email: support@ohmalab.com
• Privacy officer: Seunghee Ma (support@ohmalab.com)
• Business: OhMa Lab (오마랩) · Representative: Seunghee Ma · Business registration number 243-19-02698 (Republic of Korea)
• Address: 6 Dunchon-daero 171beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, Republic of Korea

To see, correct or delete your information, or to have it no longer processed, email us. The app keeps no personal information on the developer's servers, so most of it can be deleted right in the app or by deleting the app. Information used for ads can be stopped with No ads.

Changes

If this policy changes, this page will be updated with a new effective date above.