Privacy Policy for 3Sub

Last updated: 30 September 2026

3Sub helps you keep track of your subscriptions. The app is operated by Studio No. Limited, a company registered in the United Kingdom ("we", "us"), which is the data controller for the personal information described here. This policy explains what information the 3Sub app collects, why, who we share it with, and the choices you have.

We do not sell your personal information, we do not show ads, and we do not track you across other companies' apps or websites.

If you have any questions, contact us at support@3sub.app.

Information we collect

Account information

When you create an account we receive your email address. If you sign in with Apple or Google, we receive the email address and, if you choose to share it, the name from that account. If you use 3Sub as a guest, we create an anonymous account ID instead, with no email or name attached.

Subscription data you enter

The subscriptions, plans, prices, payment dates, custom products, categories, notes and preferences you add are stored with your account so they can sync and be restored.

Usage and diagnostic data

We collect app usage events (for example sign-ins and which features are used), crash reports, performance data, and device information such as device model, operating system version and an app installation identifier. This data is not used to identify you personally.

Purchases

If you buy 3Sub Plus, payment is handled entirely by Apple. We never receive your card or payment details; we only receive confirmation of your purchase.

Camera, photos, microphone and speech

Receipt scanning and "Say or Type it" use your camera, photos, microphone and speech recognition only when you start them. The image or recording is processed on your iPhone to fill in the subscription details and is never uploaded or saved by us. Only the subscription you choose to save is stored with your account.

Notifications

Reminders such as upcoming payments, trial endings and contract endings are scheduled on your device. You can turn them off at any time in the app or in iOS Settings.

How we use your information

We use your information to:

  • Provide the app, sync your data across devices, and let you sign in
  • Send the reminders you have set up
  • Check your access to 3Sub Plus features
  • Fix crashes and improve performance
  • Understand how features are used so we can improve them
  • Protect the service from fraud and abuse
  • Reply when you contact us

Where data protection laws such as the GDPR apply, we rely on performing our contract with you to provide the app, and on our legitimate interest in keeping it secure and improving it for analytics, diagnostics and fraud prevention.

Service providers we share data with

We share data only with the providers that run parts of the app for us:

  • Google Firebase (Authentication, Cloud Firestore, Cloud Storage, Analytics, Crashlytics, Performance Monitoring, Remote Config, App Check): sign-in, data storage, analytics and crash reporting. See firebase.google.com/support/privacy.
  • Apple: Sign in with Apple and in-app purchases.
  • Google Sign-In: if you choose to sign in with Google.
  • ExchangeRate-API (open.er-api.com): currency conversion rates. It receives your IP address when rates are requested, but no account information.

We may also disclose information if required by law.

Where your data is stored and for how long

Your account and subscription data is stored in Google Cloud Firestore in the European Union. Analytics, crash and performance data may be processed by Google in the United States, under the EU-U.S. Data Privacy Framework, its UK Extension, and Standard Contractual Clauses.

We keep your account and subscription data until you delete your account. Analytics and diagnostic data is kept by Google for a limited period and then deleted automatically.

Deleting your account

You can delete your account at any time from your profile in the Account tab. This permanently removes your account and all of your subscription data from our servers.

Your rights

Depending on where you live, including under the GDPR and UK GDPR and the California Consumer Privacy Act (CCPA), you have the right to:

  • Access the personal data we hold about you and receive a copy
  • Correct data that is inaccurate or incomplete
  • Delete your data
  • Restrict or object to how we process your data
  • Receive your data in a portable format

To make a request, email support@3sub.app. We will respond within one month, free of charge. We will not treat you differently for exercising these rights. You can also complain to the UK Information Commissioner's Office (ico.org.uk) or to your local data protection authority.

We do not sell or share your personal information for cross-context behavioural advertising.

Children

3Sub is not directed at children under 13, and we do not knowingly collect personal information from them. If you believe a child has given us personal information, contact us and we will delete it.

Changes to this policy

We may update this policy from time to time. We will change the "Last updated" date above and, for significant changes, let you know in the app.