Effective date: September 24, 2026
Developer: Black and Blue
Tandem is an Android care-tracking app for parents and other caregivers. It records feeding, sleep, diaper, pumping, growth, milestones, and notes. This policy explains what Tandem processes, why it is used, and the choices available to you.
Tandem does not sell personal data, show third-party advertising, or make care records public.
Tandem can store a baby’s name and approximate birth date, caregiver name and role, care events, growth measurements, milestones, notes, edit history, and app preferences. The current release stores these records in app-private Android storage protected with an Android Keystore-backed key. Android backup and device transfer are disabled for Tandem data.
You control what you enter. Avoid adding information that is not needed for caregiving.
Tandem can create a CSV export of care-log entries for a selected local baby profile. The app opens Android’s share chooser, and you decide whether to send the file and which installed app receives it. Tandem does not automatically upload exports. A receiving app’s privacy practices apply after you share the file.
Tandem uses Google Analytics for Firebase to record that the Android app was opened and Firebase Crashlytics to receive crash reports and developer-recorded non-fatal diagnostics. These services may process app-instance identifiers, app version, device model, operating-system information, coarse location inferred from network information, app-interaction events, crash logs, diagnostics, and network information such as IP address.
Tandem does not attach baby profiles, caregiver names, care records, notes, exports, purchase identifiers, or advertising identifiers to analytics or crash events. Advertising-ID collection and ad-personalization signals are disabled, and the Android release removes advertising and AdServices identifier permissions.
Tandem may offer optional, repeatable Student Developer Support purchases at locally displayed store prices corresponding to US $1, $10, and $100 tiers. These purchases support the developer; they do not unlock paid features, create a lasting entitlement, make a charitable donation, or provide a tax deduction.
Google Play processes payment. RevenueCat helps validate purchases and may process purchase history, product and transaction identifiers, an app-user identifier, app/device/operating-system information, and network information such as IP address. Tandem does not receive full payment-card details and does not send care records to Google Play or RevenueCat.
For each eligible transaction made after Tandem’s local baseline, the app may add one local Support Spark for an optional thank-you celebration. Tandem stores one-way fingerprints instead of raw provider customer or transaction identifiers. Clearing or deleting local data removes the Spark ledger; past purchases are not restored as owned content.
Tandem contains development support for an optional Family Pro service using Supabase authentication and family-scoped synchronization. The current release does not expose sign-in, family synchronization, or new Family Pro sales. If that service is enabled later, this policy and the Play Data Safety disclosure will be updated before launch to describe its deployed region, retention, account deletion, and shared-family access.
Tandem uses:
These providers process data under their own terms and may process it in countries other than yours. Service traffic uses encrypted HTTPS connections.
Local records remain until you delete Tandem’s local profile and data, clear the app’s storage, or uninstall the app. Google Play, RevenueCat, and Firebase retain provider records under their settings, legal obligations, fraud-prevention needs, and applicable policies.
Tandem uses Android app-private storage, Android Keystore-backed encryption, disabled Android backup and transfer, and encrypted network connections. No storage or transmission method is completely risk-free. Protect access to your device and keep Android security updates current.
In Tandem, open Settings & Account → Privacy & Local Data → Delete Local Profile & Data, review the warning, and confirm deletion. This removes the local profile and child records, Support Spark ledger, pending and celebration state, cached CSV exports created by Tandem, and Tandem’s local encryption-key alias.
You can also clear Tandem’s storage in Android settings or uninstall the app. These actions do not delete provider purchase, analytics, or crash records. Copies you already shared with another app are outside Tandem’s control.
For help identifying or deleting provider information that Black and Blue can administer, email developer@blackandblue.co.in with the subject Tandem privacy request. Include only the minimum locator requested by support. Do not send baby or caregiver records, passwords, payment-card information, authentication links, or raw purchase tokens.
Tandem contains information about babies and children, but it is designed for parents and other caregivers to operate, not for children to use independently. It does not contain advertising, public profiles, or social features. A caregiver controls any export through Android’s share chooser. A parent or guardian may contact us if they believe information was provided through inappropriate use of the app.
Use Tandem only for lawful caregiving and with appropriate authority to record the information entered. Tandem is a record-keeping aid, not medical, emergency, diagnostic, or professional advice. Contact a qualified professional or emergency service when appropriate.
Tandem is provided on an “as available” basis. Purchase prices and terms are shown by Google Play before purchase and are subject to Google Play’s billing and refund rules.
For product help, billing questions, privacy requests, or safety concerns, email developer@blackandblue.co.in. Include the app name, app version, Android version, device model, and a concise description when relevant, but do not send private care records or secrets.
We may update this policy when Tandem, its providers, or legal requirements change. The current version will show its effective date. Material changes will be reflected in the app or store listing when appropriate.
Users in India may send privacy questions or complaints to the email address above. This contact statement does not designate a statutory grievance officer or publish unverified legal or postal details.