Privacy Policy
Effective date: October 1, 2026
Best Move ("we", "us", or "our")
Best Move stores all your scenarios, analysis results, settings and favorites on your device.
By default, none of this data is uploaded to a cloud service.
If you enable Google Drive backup, backups of your history will be stored on your Google Drive. No data is shared with any third party. Only you have access and control over it.
We do NOT sell your data.
Policy Summary
Personal Data is processed for the following purposes and using the following services:
• Our relay server at api.bestmove.dev (it forwards your AI requests to Anthropic)
• Anthropic API (when you run an AI analysis of a scenario)
• Google OAuth / Google Drive (only if you enable the Google Drive backup feature)
• Google Play Billing (only if you purchase a subscription or one-time product)
• Feedback you send us by email
The app contains no advertising SDKs, no analytics SDKs and no crash-reporting SDKs. There are no user accounts.
AI Analysis (Anthropic API)
When you run an analysis, the text of your scenario description is sent over an encrypted connection to the Anthropic API (operated by Anthropic PBC) to build the game model, compute the analysis and generate the recommendation.
That request passes through our own relay server at api.bestmove.dev, which attaches the API credentials and forwards the request to Anthropic. The relay exists so that no API key has to be shipped inside the app, where it could be extracted.
• The relay does not store or log the text of your scenarios. Request and response pass through it as a stream and are never written down. It records only technical metadata needed to keep the service working: which endpoint was called, the HTTP status, how long the request took, and a one-way hash of your installation identifier.
• We do not store your scenarios on our servers.
• The scenario text is used solely to process your request; we do not use it for any other purpose.
• The results are returned to your device and stored locally.
• Do not include information in a scenario that you do not want to be processed this way; you can describe situations in general terms.
• Anthropic’s processing is governed by the Anthropic Privacy Policy.
Your own API key (BYOK): Premium users may enter their own Anthropic API key. The key is stored only locally on your device and is used only to authorize your own requests to the Anthropic API. Requests made with your own key go directly to Anthropic and do not pass through our relay, so we never receive the key or see those requests.
If you never run an AI analysis, no scenario data leaves your device.
Google OAuth (only if you enable the Google Drive backup feature)
This feature enables the Application to store backups on the User’s Google Drive.
The Application will ask the User to allow the Application to:
• “See, edit, create, and delete only the specific Google Drive files you use with this app”: This is needed to save and update backup files in your Google Drive.
• “See your primary Google Account email address”: This is needed to show you within the Application which Google Account is connected.
Any of this information will only be saved locally on your device within the Application.
Place of processing: Google Cloud Platform Locations or Google data center locations.
Feedback Collected Directly
The contact form and bug report open your own email app; the message is sent from your email address to ours.
Data Collected: feedback message, your email address, and any information you choose to include (such as device info in a bug report).
Purpose: responding to your request and fixing problems.
Other Data
• Purchase history
Subscriptions and one-time purchases are processed by Google Play. We do not receive or store your payment card details. The app only stores your entitlement status (whether Premium is active) locally.
Purpose: App functionality.
• Installation ID
The app generates a technical installation identifier (derived from installation time and general device characteristics such as model, OS version, language, time zone and screen resolution). It is stored locally, shown in the About section, and is used for support requests and gift-code validation. A one-way hash of it is sent to our relay with each AI request so that usage limits can be applied; the identifier itself is never sent, and neither form is used for tracking or advertising.
• Backups
Backup files (JSON) are created only at your request and are saved to the location you choose (a local file or your Google Drive). You control where they are stored and who can access them.
Links to Privacy Policies of Third-Party Service Providers
• Anthropic
• Google Play Services / Google Drive
Cookies
The app does not use cookies. Third-party services used by the app (Google Play, Google Drive, Anthropic API) may use technical identifiers to provide their services.
Ads
This Service does not display advertisements and does not use advertising SDKs or mobile advertising identifiers. We may introduce advertising in a future version. If we do, we will update this Privacy Policy and the Google Play Data safety disclosure accordingly, and request your consent where required before collecting any advertising-related data.
Payments
We may provide paid products and/or services within the Service. In that case, we use third-party services for payment processing (Google Play Billing). We will not store or collect your payment card details. That information is provided directly to our third-party payment processors whose use of your personal information is governed by their Privacy Policy. These payment processors adhere to the standards set by PCI-DSS as managed by the PCI Security Standards Council.
Rights of Users
Users may exercise certain rights regarding their Data processed by Best Move.
In particular, Users have the right to do the following:
• Withdraw their consent at any time.
Users have the right to withdraw consent where they have previously given their consent to the processing of their Personal Data (for example, by disconnecting Google Drive backup).
• Object to processing of their Data
Users have the right to object to the processing of their Data if the processing is carried out on a legal basis other than consent.
• Access their Data
All scenario data is visible within the App; Users may also request disclosure regarding processing.
• Verify and seek rectification
Users can edit or correct their data at any time within the App.
• Restrict the processing of their Data
Users have the right, under certain circumstances, to restrict the processing of their Data.
• Have their Personal Data deleted or otherwise removed
Users can delete scenarios within the App or remove all app data by clearing the app storage or uninstalling the App.
• Receive their Data and have it transferred to another controller
Users can export their entire history to a JSON file at any time (Settings → Backup & Data).
• Lodge a complaint with their competent data protection authority.
How to Exercise These Rights
Any requests to exercise User rights can be directed to us through the contact details provided in this document. These requests are free of charge and will be addressed as early as possible and always within one month.
Additional Information
Legal Action
The User’s Personal Data may be used for legal purposes by Best Move in Court or in the stages leading to possible legal action arising from improper use of this Application or the related Services. The User declares to be aware that Best Move may be required to reveal personal data upon request of public authorities.
How “Do Not Track” requests are handled
This Application does not support “Do Not Track” requests. To determine whether any of the third-party services it uses honor the “Do Not Track” requests, please read their privacy policies.
Children’s Privacy
These Services do not address anyone under the age of 13. We do not knowingly collect personally identifiable information from children under 13. If you are a parent or guardian and you are aware that your child has provided us with personal information, please contact us so that we will be able to take necessary actions.
Changes to This Privacy Policy
Best Move reserves the right to make changes to this privacy policy at any time by giving notice to its Users on this page and possibly within this Application. It is strongly recommended to check this page often, referring to the effective date listed at the top.
Should the changes affect processing activities performed on the basis of the User’s consent, Best Move shall collect new consent from the User, where required.
Definitions
• Personal Data (or Data) — Any information that directly, indirectly, or in connection with other information allows for the identification or identifiability of a natural person.
• User — The individual using this Application who, unless otherwise specified, coincides with the Data Subject.
• Data Controller — The natural or legal person which determines the purposes and means of the processing of Personal Data. The Data Controller, unless otherwise specified, is Best Move.
• This Application — The means by which the Personal Data of the User is collected and processed.
• Service — The service provided by this Application.
• European Union (or EU) — Unless otherwise specified, all references made within this document to the European Union include all current member states to the European Union and the European Economic Area.
Legal Information
This privacy statement has been prepared based on provisions of multiple legislations, including Art. 13/14 of Regulation (EU) 2016/679 (General Data Protection Regulation) and the Personal Information Protection and Electronic Documents Act (PIPEDA).
This privacy policy relates solely to this Application, if not stated otherwise within this document.
Contact
Questions about privacy: support@bestmove.dev