1. Overview
Chroia ("the App") is a camera app that reproduces risograph printing — multi-plate color separation, halftone dot screens, and intentional plate misregistration — live in the viewfinder and at full quality when you press the shutter. This Privacy Policy explains what information the App collects, how it is used, and your rights.
By installing or using the App, you agree to this Privacy Policy. If you do not agree, please discontinue use of the App.
2. Information We Collect
The following information is collected or processed by the App.
| Data Type | Purpose | Storage |
|---|---|---|
| Photos Captured images |
Core app functionality | Your Photos Library |
| App Settings Selected mechanism, ink color, and adjustment preferences |
Personalize the shooting experience | Device only |
| Anonymous Usage Events App open, screen views |
App quality & stability improvement | Firebase Analytics |
| Crash Reports Device model, OS version, app version, crash stack trace |
App stability improvement | Firebase Crashlytics |
| Purchase Status Full Unlock entitlement (anonymous) |
Unlocking paid mechanisms | Apple App Store |
| Location Data (GPS / device sensor) |
Not collected | Not collected |
| Account / Login | Not collected — the App has no account system | Not collected |
Note: Chroia never requests location permission and never reads GPS or device location sensors. Any location data attached to a photo comes solely from iOS's own system-level camera metadata behavior, entirely outside the App's control.
3. How Your Media Is Stored
Every photo captured by Chroia is written directly to your device's iOS Photos Library, inside a dedicated "Chroia" album created by the App via Apple's Photos framework — the same system every camera app uses to save photos on iOS.
- Photos are protected by whatever device-level security you already have configured (device passcode, Face ID / Touch ID, Photos app permissions) — Chroia adds no separate lock of its own.
- The App also stores the name of the mechanism used (e.g. "Riso Duotone", "Offset Newsprint") in the photo's standard EXIF/TIFF metadata, so it travels with the photo when you share or export it.
- Media is never transmitted to any server we operate. We have no ability to view, copy, or retrieve your photos.
4. Firebase Services
Chroia uses Firebase Analytics and Firebase Crashlytics (Google LLC) to understand app quality and stability.
Firebase Analytics collects only Firebase's default, automatically-gathered events (such as app opens and screen views). The App does not send any custom event beyond this default collection.
ad_storage, ad_user_data, ad_personalization) are permanently set to denied. Chroia shows no ads, does no ad tracking, and never requests App Tracking Transparency permission.Firebase Crashlytics collects the following only when the App crashes:
- Device model, OS version, and app version
- Crash location (stack trace)
- Timestamp of the crash (UTC)
For details on how Firebase handles data, see Firebase Privacy.
5. Third-Party Services
The App uses the following third-party services.
| Service | Purpose | Privacy Policy |
|---|---|---|
| Firebase Analytics | Anonymous app usage collection | View → |
| Firebase Crashlytics | Crash reporting and stability improvement | View → |
| Apple App Store | App distribution, billing, and Full Unlock purchase processing (StoreKit) | View → |
6. Data Retention & Deletion
- Photos: Live in your iOS Photos Library, under the standard iOS Photos deletion/Recently Deleted behavior — entirely governed by iOS, not by Chroia.
- App settings (local): Mechanism/ink preferences are stored on-device and removed when you uninstall the App.
- Purchase records: Retained by Apple per the App Store's own policies. See Section 5.
- Analytics & crash data: Subject to Google's data retention policies.
7. Your Rights
Depending on your region, you may have the following rights.
- Right of Access: Request a copy of your personal data
- Right of Rectification: Correct inaccurate data
- Right to Erasure: Request deletion of your data
- Right to Restriction: Request limitation of processing
To exercise your rights or for inquiries, please contact us at the address below.
8. Children's Privacy
Chroia is not directed to children under the age of 13 (US) or 16 (EU/EEA). We do not knowingly collect personal information from children.
If you become aware that a child has used the App, please contact us immediately so we can take appropriate steps.
9. Security
- Photos are protected by your device's own security (passcode, Face ID / Touch ID) via the standard iOS Photos permission model.
- Chroia has no account system, so there are no login credentials to protect.
- Your photos are never transmitted to our servers under any circumstance.
- Purchase state is verified directly through Apple's App Store — Chroia never handles your payment details itself, and uses no third-party purchase-management service.
10. Changes to This Policy
This policy may be updated due to changes in law, service updates, or third-party policy changes. We will notify you of significant changes via in-app notice or this page.
Changes take effect upon posting to this page. Continued use of the App after changes constitutes acceptance of the updated policy.
11. Contact Us
For questions about this Privacy Policy or to exercise your rights, please reach out.
We aim to respond within 5 business days.