Privacy Policy

1. Information processed on your device

Saved calculations, stock names, and your theme and language settings are stored only on your device. Saved calculations and stock names are never sent to the Operator's servers or included in the usage statistics described below, and the Operator cannot see them. Deleting the app deletes them — there is no separate backup.

2. Advertising and privacy choices

Google AdMob may process the advertising ID and other device identifiers, approximate location inferred from IP addresses, app launches, ad views and clicks, and error and performance diagnostics to provide and measure ads and prevent fraud. Calculation inputs and document contents are not included in ad requests. Loading ads in advance can involve network communication before an ad appears.

Where consent is required, Google’s consent management tool presents choices. When the advertising privacy options entry appears in Settings, you can review or change those choices. You can also reset or delete the advertising ID in Android settings. Deleting that ID or rejecting personalised ads does not stop all advertising-related processing.

Retention, deletion and international processing by Google are described in the Google Privacy Policy and Google’s partner services information. Once an ad-removal purchase is verified, the app stops new ad requests; information already processed is not automatically deleted.

3. Purchase information

Remove ads is a one-time Google Play in-app purchase, not a subscription. The app processes Google Play purchase information to verify and restore ownership and stores the purchase status on the device. Payment details such as card numbers are not provided to the Operator, and the app does not send the purchase information it uses for verification to the Operator’s servers. While usage statistics are being sent, however, the purchase of Remove ads may be recorded in the usage statistics described below.

4. Usage statistics

To understand which features are used and how often, and to improve the app's stability and usability, the app sends usage statistics to Firebase Analytics, a Google service. Usage statistics are not used for advertising.

Usage statistics include which features you use; events recorded automatically, such as first open, session start, screen views and engagement time; an app instance ID created separately for each installation; the app version, OS version, device model and language; and approximate location (country or city level) inferred from your IP address. If you buy Remove ads, a purchase event containing the product ID, product name, price and currency may also be recorded, and ad-related events may be recorded when ads are shown.

Numbers and amounts you enter, stock names and saved calculations are not included in usage statistics. Usage statistics are configured not to collect the advertising ID or the Android device ID (SSAID), and ad personalisation signals are turned off.

The Operator exports these records daily to BigQuery in the Operator's own Google Cloud project and views them as aggregates, such as daily active users, return rates and usage by feature, in an internal console that only the Operator can access. The records contain no name or email address and are distinguished only by the app instance ID. Exported records are deleted 14 months after collection, and the retention period for records kept in Firebase Analytics is also set to 14 months. Aggregate results that contain no individual records or identifiers may remain after that.

Sending usage statistics is on by default, and you can turn it off at any time in Settings › Send usage statistics. Once it is off, no further usage statistics are collected, and every feature of the app remains available. Records sent before you turned it off are deleted when the retention period above ends. Because the records are stored without information that identifies you, the Operator may be unable to find your records if you ask for them to be deleted. Even if the app is updated earlier, it does not send usage statistics before this policy takes effect.

The Operator entrusts the collection and storage of usage statistics to Google LLC, and in the process usage statistics are transferred abroad as follows.

• Recipient: Google LLC (privacy inquiries)
• Countries: the United States and other countries where Google operates data centers
• Data transferred: feature use records and usage events, app instance ID, app and OS versions, device model, language, approximate location and purchase events
• Timing and method: sent over the network from time to time while you use the app
• Purpose: analysing feature usage and improving the app
• Retention: 14 months from collection
• How to refuse and its effect: turning off Settings › Send usage statistics stops the transfer, and refusing does not limit your use of the app

For details on how Google processes this data, see the Firebase privacy information.

5. Storage, deletion and requests

Internal app data stays on your device to provide the features. Clearing app data or uninstalling the app removes internal data, which the Operator cannot restore. Copies you save, export or share separately must be deleted at their storage location or from the receiving service.

If you email the Operator, the Operator processes your email address and message to reply. Do not send unnecessary documents, passwords or payment details. For access, correction, deletion, restriction of processing or withdrawal of consent, contact twinkle.ai.labs@gmail.com. For on-device data the Operator does not hold or information managed by Google, the Operator explains how to act through the relevant device or service.

Inquiry information is deleted without undue delay after the response and follow-up are complete, unless retention is required by law, in which case it is kept for the legally required period.

6. Children and contact

The Service is not directed at children under 16. If you believe a child’s personal information has been provided to the Operator, contact twinkle.ai.labs@gmail.com. The Operator is Twinkle AI Labs, a name used by an individual.

7. Changes

Revisions and their effective dates are announced on Polaris and in the app policy screens: at least 7 days before ordinary changes and 30 days before material or unfavourable changes.