Chroma Privacy Policy

Overview

Chroma is an offline period-tracking app by Shanci Technology Co., Ltd. This policy explains what information is stored by the app and how it is used.

Data stored on your device

Chroma stores the information you enter or choose inside the app, including birth year; cycle, period, pregnancy, and post-pregnancy settings; health logs; symptoms; moods; sex tags; energy; sleep; notes; medication names and reminder times; language and appearance settings; App Lock preferences; and any photo you choose as a Today background.

That information is stored on your device using Apple's local storage. If iCloud device backup is enabled for your device, Apple may include Chroma's local app data in that backup. Chroma does not provide its own account system or cloud sync service.

To determine whether a consent screen is required, Chroma asks Apple's StoreKit for the current App Store storefront at the start of each app session. Chroma stores only whether the storefront was resolved and whether mainland China consent rules apply, together with the accepted policy version and time.

Data collection, tracking, and sharing

Chroma does not create accounts, does not use a server, and does not include third-party analytics, advertising SDKs, or tracking SDKs. The app does not send your cycle logs, health information, selected photos, or settings to Shanci Technology Co., Ltd.

We do not sell or share your app data. If you contact us by email, we use your email address and message only to respond to and handle your request.

Device permissions

• Notifications are used only for reminders you enable in the app.
• App Lock protects access to what Chroma displays; it does not encrypt the local database or exported files. Face ID or device authentication is used only when App Lock is enabled. Biometric authentication is handled by iOS; Chroma does not receive your biometric data.
• The photo picker is used only when you choose a Today background photo. Chroma stores the selected image locally in the app's storage.

Exporting and deleting data

JSON backups and CSV exports are unencrypted and may contain sensitive health information. Save or share them only with services and people you trust.

You can erase all Chroma data from Settings at any time. This removes the app's local profile, health logs, settings, medication reminders, custom backgrounds, notifications, consent record, and cached app state. It cannot remove copies in files you exported or in device backups managed by Apple.

Contact

For privacy questions, contact Shanci Technology Co., Ltd. at support@shanciapp.com.