1. Data controller and contact details
Service provider: Guilin Sanyu Technology Co., Ltd. ("we", "us").
Registered address: Room 102, Unit 2, Building 2, No. 34 Putuo Road, Qixing District, Guilin, China.
Contact email: contact@tricosmos.cn.
2. Scope
This policy applies to Amount Converter for iOS version 3.0 and applicable later versions, provided by Guilin Sanyu Technology Co., Ltd. Earlier versions may process information differently. No account is required; calculations and conversions take place on your device.
3. On-device data
Amounts, calculations and conversion results are processed on your device. Copying or sharing saves the amount and result to local history, limited to the 500 most recent distinct values. You can delete individual entries or clear all history. Theme and appearance preferences are also stored locally. We do not operate an application backend that receives these records.
5. Advertising and privacy choices
The free version uses Google AdMob for banner and cold-start app-open ads and Google User Messaging Platform (UMP) for applicable regional privacy choices. Google and advertising partners listed in the consent message may process IP address and approximate region, device or app identifiers, ad impressions and interactions, and diagnostic information. With relevant permission, partners may process precise location; the app does not currently request location permission. We do not actively send entered amounts or local history to the advertising SDK. Google privacy policy: https://policies.google.com/privacy ; advertising technologies: https://policies.google.com/technologies/ads .
6. Ad choices and system permissions
Where applicable, the app uses UMP to request relevant choices and provides Settings → Ad privacy options when required. Refusing optional consent does not prevent local calculations. The app does not currently request cross-app tracking authorization; this does not mean advertising services process no other data.
7. Purchases and restoration
Remove Ads is an optional one-time non-consumable purchase, not a subscription. Apple handles payment, transactions and refunds. The app reads verified transactions to recognize valid entitlements, including the same product purchased in earlier versions. Once an ad-free entitlement is confirmed, banner and app-open ads are neither requested nor displayed. Apple privacy policy: https://www.apple.com/legal/privacy/ .
8. Retention and security
History and settings remain in the device app sandbox until you delete records, delete the app or the system clears them under its rules. iOS offloading may retain data; device and cloud backups are managed separately in system settings. Google and Apple retain information they process under their own rules, potentially on servers outside your region.
9. Your choices and rights
You can delete history or change appearance in the app and change ad privacy choices where available. Deleting the app removes its on-device data. For information held by third parties, see their privacy policies or contact us for assistance. Subject to applicable law, you may request access, correction, deletion or an explanation of personal information we hold; withdrawal does not affect prior lawful processing.
10. Children
Minors should use the app with a guardian’s guidance and obtain consent before purchasing. A guardian who believes a child provided personal information without appropriate consent may contact us.
11. Contact and changes
For privacy questions or rights requests, contact Guilin Sanyu Technology Co., Ltd. at contact@tricosmos.cn, Room 102, Unit 2, Building 2, No. 34 Putuo Road, Qixing District, Guilin, China. We will respond within 15 working days. When processing changes, we will update this policy and provide notice or seek consent as applicable.
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