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最後更新於: July 5, 2026
Siulamsu (小藍書) - Privacy Policy
This Privacy Policy explains how Omu Labs Limited (“we”, “our”, or “us”) handles information when you access or use Siulamsu (小藍書), a swipe-to-learn app for Cantonese, Chinese variants, local slang, everyday phrases, and cultural language learning. Siulamsu is designed to work without sign-in, user accounts, or server-side learning profiles.
A. Introduction
Welcome to Siulamsu (小藍書). This Privacy Policy explains how Omu Labs Limited (“we”, “our”, or “us”) handles, safeguards, and limits information when you access or use the Siulamsu mobile application, website, and related services (collectively, the “Service”). By using Siulamsu, you acknowledge the practices described in this Privacy Policy.
Welcome to Siulamsu (小藍書). This Privacy Policy explains how Omu Labs Limited (“we”, “our”, or “us”) handles, safeguards, and limits information when you access or use the Siulamsu mobile application, website, and related services (collectively, the “Service”). By using Siulamsu, you acknowledge the practices described in this Privacy Policy.
B. No Account, No Sign-In, No Personal Learning Profile
Siulamsu does not require you to create an account, sign in, or provide your name, email address, username, password, profile image, or other account information. There are no user accounts of any kind in the app. We do not maintain a server-side learning profile linked to you.
Siulamsu does not require you to create an account, sign in, or provide your name, email address, username, password, profile image, or other account information. There are no user accounts of any kind in the app. We do not maintain a server-side learning profile linked to you.
C. Learning Progress Stays on Your Device
Your learning progress — including streaks, saved cards, known cards, skipped cards, and similar learning status — is stored locally on your own device using standard on-device storage. This data is not uploaded to our servers, is not linked to an account, and cannot be viewed, backed up, recovered, or transferred by us. Deleting the app may delete this local data.
Your learning progress — including streaks, saved cards, known cards, skipped cards, and similar learning status — is stored locally on your own device using standard on-device storage. This data is not uploaded to our servers, is not linked to an account, and cannot be viewed, backed up, recovered, or transferred by us. Deleting the app may delete this local data.
D. Anonymous Content Requests
To display learning cards, the App fetches card content from our backend database. This may include phrases, meanings, examples, explanations, card IDs, categories, illustrations, and related educational content. These requests are not tied to a user account and do not include your name, email address, learning history, saved cards, or personal profile.
To display learning cards, the App fetches card content from our backend database. This may include phrases, meanings, examples, explanations, card IDs, categories, illustrations, and related educational content. These requests are not tied to a user account and do not include your name, email address, learning history, saved cards, or personal profile.
E. Pronunciation / Audio Generation
When you tap the speaker icon or use an audio feature, the text of the relevant phrase or sentence may be sent to third-party text-to-speech or audio generation providers, including ElevenLabs and MiniMax, solely to generate pronunciation audio. We do not send your name, email address, account details, saved cards, learning progress, or personal learning profile to these audio providers.
When you tap the speaker icon or use an audio feature, the text of the relevant phrase or sentence may be sent to third-party text-to-speech or audio generation providers, including ElevenLabs and MiniMax, solely to generate pronunciation audio. We do not send your name, email address, account details, saved cards, learning progress, or personal learning profile to these audio providers.
F. Card Illustrations
Card illustrations may be generated ahead of time from the card text content, such as the phrase, meaning, or example sentence. This process does not involve your personal photos, your device images, your identity, or your learning progress.
Card illustrations may be generated ahead of time from the card text content, such as the phrase, meaning, or example sentence. This process does not involve your personal photos, your device images, your identity, or your learning progress.
G. Infrastructure and Hosting
Siulamsu relies on third-party infrastructure providers, including Supabase and hosting providers, to operate the Service and serve card content. Like most internet services, these providers may automatically process basic technical request data, such as IP address, device/browser type, timestamps, app version, and server logs, for security, reliability, debugging, abuse prevention, and service delivery. We do not use these logs to build advertising profiles or identify individual learners.
Siulamsu relies on third-party infrastructure providers, including Supabase and hosting providers, to operate the Service and serve card content. Like most internet services, these providers may automatically process basic technical request data, such as IP address, device/browser type, timestamps, app version, and server logs, for security, reliability, debugging, abuse prevention, and service delivery. We do not use these logs to build advertising profiles or identify individual learners.
H. Analytics and Advertising
Siulamsu does not sell personal information to advertisers. Unless otherwise stated in the App, Siulamsu does not display third-party advertisements and does not use third-party advertising SDKs. If we later add analytics or advertising features, we will update this Privacy Policy as required.
Siulamsu does not sell personal information to advertisers. Unless otherwise stated in the App, Siulamsu does not display third-party advertisements and does not use third-party advertising SDKs. If we later add analytics or advertising features, we will update this Privacy Policy as required.
I. AI, Audio, and Automated Content Features
Certain content, illustrations, explanations, or audio features may use AI or automated generation technologies. These features are used to provide educational content and pronunciation support. We do not use identifiable personal learning profiles to train third-party AI models.
Certain content, illustrations, explanations, or audio features may use AI or automated generation technologies. These features are used to provide educational content and pronunciation support. We do not use identifiable personal learning profiles to train third-party AI models.
J. Third-Party Services and Sub-Processors
We may use third-party service providers to operate Siulamsu, including backend/database hosting, cloud infrastructure, content delivery, text-to-speech, audio generation, AI content tools, and reliability services. Providers may include Supabase, ElevenLabs, MiniMax, and cloud infrastructure partners. These providers process data only as needed to support the Service.
We may use third-party service providers to operate Siulamsu, including backend/database hosting, cloud infrastructure, content delivery, text-to-speech, audio generation, AI content tools, and reliability services. Providers may include Supabase, ElevenLabs, MiniMax, and cloud infrastructure partners. These providers process data only as needed to support the Service.
K. Data Storage and Security
We use reasonable technical and organizational measures designed to protect the Service, including encrypted connections using HTTPS/TLS and access controls for backend systems. However, no electronic transmission or storage method is completely secure, and we cannot guarantee absolute security.
We use reasonable technical and organizational measures designed to protect the Service, including encrypted connections using HTTPS/TLS and access controls for backend systems. However, no electronic transmission or storage method is completely secure, and we cannot guarantee absolute security.
L. Data Retention
Because Siulamsu does not create user accounts and does not upload your learning progress to our servers, we do not retain account-level learning histories. Locally stored learning progress remains on your device until you delete it, reset the app, or uninstall the app. Technical server logs may be retained for a limited period for security, reliability, debugging, and abuse-prevention purposes.
Because Siulamsu does not create user accounts and does not upload your learning progress to our servers, we do not retain account-level learning histories. Locally stored learning progress remains on your device until you delete it, reset the app, or uninstall the app. Technical server logs may be retained for a limited period for security, reliability, debugging, and abuse-prevention purposes.
M. Children’s Privacy
Siulamsu is intended for general audiences and does not knowingly collect personal information from children under 13. Because the App does not require accounts or ask for personal information, we do not knowingly create child user profiles. If we become aware that personal information from a child has been collected, we will take reasonable steps to delete it.
Siulamsu is intended for general audiences and does not knowingly collect personal information from children under 13. Because the App does not require accounts or ask for personal information, we do not knowingly create child user profiles. If we become aware that personal information from a child has been collected, we will take reasonable steps to delete it.
N. International Data Transfers
Your technical request data or service-related data may be processed, transferred, or stored in jurisdictions outside your country of residence where our infrastructure providers or service partners operate. We implement reasonable safeguards for such transfers where required by applicable law.
Your technical request data or service-related data may be processed, transferred, or stored in jurisdictions outside your country of residence where our infrastructure providers or service partners operate. We implement reasonable safeguards for such transfers where required by applicable law.
O. Your Rights
Depending on your jurisdiction, you may have rights relating to personal information, including rights to access, correct, delete, restrict, object to processing, or request portability. Because Siulamsu does not maintain user accounts or server-side learning profiles, we may not be able to identify or retrieve app usage data associated with you unless you provide sufficient information for verification.
Depending on your jurisdiction, you may have rights relating to personal information, including rights to access, correct, delete, restrict, object to processing, or request portability. Because Siulamsu does not maintain user accounts or server-side learning profiles, we may not be able to identify or retrieve app usage data associated with you unless you provide sufficient information for verification.
P. Apple App Store Privacy Disclosure
If you download Siulamsu through the Apple App Store, Apple may process information in accordance with Apple’s own terms and privacy policy. We are responsible for the privacy practices of Siulamsu itself, while Apple is responsible for its own App Store, device, payment, and platform services.
If you download Siulamsu through the Apple App Store, Apple may process information in accordance with Apple’s own terms and privacy policy. We are responsible for the privacy practices of Siulamsu itself, while Apple is responsible for its own App Store, device, payment, and platform services.
Q. Changes to This Privacy Policy
We may update this Privacy Policy from time to time to reflect changes in the App, legal obligations, operational practices, audio providers, hosting providers, or platform functionality. Updated versions will be posted within the Service together with a revised “Last Updated” date. Continued use of the Service following updates constitutes acceptance of the revised Privacy Policy.
We may update this Privacy Policy from time to time to reflect changes in the App, legal obligations, operational practices, audio providers, hosting providers, or platform functionality. Updated versions will be posted within the Service together with a revised “Last Updated” date. Continued use of the Service following updates constitutes acceptance of the revised Privacy Policy.
R. Contact Us
For questions, requests, or concerns regarding this Privacy Policy, please contact:
Omu Labs Limited
Hong Kong
email@omulabs.co
For questions, requests, or concerns regarding this Privacy Policy, please contact:
Omu Labs Limited
Hong Kong
email@omulabs.co