Thank you for using the App. This policy explains how information is handled in the App.
All image and video processing in the App (converting to grayscale and keeping a selected color) is performed entirely on your device. We do not send or store your photos or videos — before or after processing — on the operator's servers. Saving your work happens only on your device or to your Camera Roll, based on your own actions.
We use add-only permission to your photo library solely to save your work to the Camera Roll. We do not read your library (photo selection uses the standard picker, which requires no permission).
The App displays ads via Google AdMob. AdMob may obtain information such as advertising identifiers to deliver ads, measure impressions, and prevent fraud. For details, please see Google's policies.
To improve the App, we use Google Firebase (Google Analytics, Crashlytics, and Performance Monitoring) to measure anonymous usage and quality information, such as:
This information is used for statistical analysis, bug fixing, and quality improvement. We do not collect information that directly identifies you, such as your name, address, or phone number. For details, please refer to Google's privacy policy above.
To show more relevant ads, the App may ask for permission to track while you use it. If you decline, you will simply see less relevant ads, and the App works as usual. You can change this at any time in the iOS Settings app.
If you live in the European Economic Area, the UK, or similar regions, we display a screen to obtain and manage your consent for advertising. You can change your consent at any time from "Settings > Change consent settings" in the App.
Purchases of paid features (one-time purchase) are handled through Apple's In-App Purchase, and payment information is processed by Apple. The App does not obtain your credit card or other payment details.
The App is not directed at any specific age group, and does not actively collect information that identifies individuals.
The App is operated with due regard to Japan's Act on the Protection of Personal Information (APPI) and other applicable laws.
For privacy inquiries, please contact chromono.app@gmail.com.
This policy may be revised as needed. If there are significant changes, we will notify you within the App.