Teumbak
Privacy policy
Last updated: September 19, 2026
(주)아이비알도스, referred to as “IBRDOS,” “we,” or “us,” operates Teumbak. Contact us about privacy or your rights at dev@ibrdos.com.
1. How Teumbak works
Teumbak is an interval timer for setting work time, rest time and rounds. It has no sign-up or application backend operated by us. Timer presets, completed-session history and preferences are stored on your device. An active session is held in app memory and is not restored after the app process terminates. We cannot remotely inspect or restore those records.
Your operating system may include app data in device backup or restoration according to your settings. This is separate from Teumbak; we do not provide cross-device synchronization. On a shared device, review its lock and backup settings.
2. Information and purposes
| Information | Purpose and storage |
|---|---|
| Local presets: names, colors, work/rest/preparation durations, rounds and last-selected preset | Configure timers and remember the last selection. Kept locally until deleted in the app or through device app-data controls |
| Local history: session date, preset, duration and round information | Show completed sessions. The latest 500 records are kept locally; older records are removed as new ones are added. You can delete them earlier |
| Local language, theme, sound, haptic and screen-awake preferences | Remember choices; manage them through settings, reset or device app-data deletion |
| User-exported data: a JSON file containing presets, history, preferences and export time | Saved or shared to the destination you choose. Manage copies at that destination |
| Support messages: sender email, message, voluntarily attached files and replies | Understand, answer and follow up on support requests |
| Advertising services: IP address and approximate location derived from it, advertising and interaction information, diagnostics/performance data and app/device-related identifiers | Deliver and measure advertising, analyze service operation and prevent fraud. See the advertising and retention provisions below |
You do not need to put your real name or health details in a preset. Do not send passwords, identity documents or medical records in a support request. Teumbak does not automatically attach your workout history to an email.
3. Advertising and choices
Teumbak may display Google AdMob banners on the home or completion screen through the Google Mobile Ads SDK. No banner is displayed while a workout is preparing, running or paused. Advertising and privacy-choice checks require a network connection. Test ads can also communicate with the advertising service. You can use the timer without watching an advertisement or agreeing to optional advertising processing.
The app requests non-personalized ads. On iOS, it checks Apple’s App Tracking Transparency (ATT) system permission before loading Google UMP or the advertising SDK or requesting ads. With permission, Google advertising services may process device and advertising information to deliver ads and measure their effectiveness. If permission is denied, restricted or unavailable, no ads are requested and the app’s core features remain available. Permission is checked again when returning from system settings. The Android AD_ID permission is removed. Android 13 and later restrict advertising-ID access without this permission; on Android 12L and earlier, advertising-ID processing may depend on operating-system and Google services settings. Non-personalized advertising does not eliminate all advertising SDK data processing after authorization. Locally stored preset names and workout history are not included in advertising requests.
Where applicable, Google User Messaging Platform (UMP) presents privacy choices. If required, you can reopen those choices from Advertising privacy choices in app settings after ending your workout. Advertising requests are restricted while required choices or checks are incomplete. Withdrawing a choice does not affect the lawfulness of earlier processing; it does not prevent use of the timer.
Read Google's Privacy Policy and How Google uses information from apps that use its services. You can also use Google's procedures for rights requests relating to information it holds. We cannot promise to delete every record held by Google on your behalf.
4. External services and information transfers
We do not provide local timer data or workout history to advertising providers. The advertising SDK sends advertising information from the device to Google's services; processing may occur outside your country. The links above explain Google's information handling and privacy choices.
Support email is sent through your email service to our contact address. Exporting or sharing a file sends it to the storage service or recipient you choose.
5. Retention and deletion
Use the data reset control in Teumbak settings to erase user presets and completed-session history. Reset recreates example presets and default preferences while retaining your selected language. This cannot be undone, and we hold no recovery copy. Uninstalling or using your operating system's app-data controls may remove on-device app data; manage operating-system backups separately with the relevant provider.
Email dev@ibrdos.com to request deletion of support correspondence you sent us. Resetting or uninstalling Teumbak does not also delete those emails. A deletion request may be limited where a legal retention obligation applies to the information.
Google's policies and controls govern its retention and deletion of advertising information. Deleting local timer records does not delete information already sent to Google.
The export control sends a JSON file to the save location or sharing app you select; it does not upload the file to our server. Exported files include preset names and session history, so check the recipient before sharing. Resetting Teumbak does not delete copies you saved or shared elsewhere. Delete those copies at the relevant destination or through that service.
6. Your privacy rights
Email dev@ibrdos.com to request access, correction, deletion, restriction, withdrawal of consent, or another right available under applicable law. A legal guardian or authorized representative may also make a request. We seek only the information needed to confirm and handle it, and respond within the applicable legal procedures. For local data we do not hold, we explain how to manage it on your device.
Other people using a shared device may be able to view its app records. Review the device lock and backup settings, and keep its operating system updated. If a privacy concern remains unresolved, you may contact your competent privacy authority. In Korea, resources include the Privacy Infringement Report Center and Personal Information Dispute Mediation Committee.
7. Permissions, children and changes
Teumbak does not request microphone recording, photos, contacts, GPS location, HealthKit or Health Connect access. Timer audio is playback, not recording. An advertising provider's estimate of general location from an IP address is different from GPS permission.
Teumbak is not designed or promoted primarily for children. A guardian who believes a child has sent us personal information may contact us to request deletion.
We announce changes and their effective date in the app or its information pages. We obtain fresh consent where required.