Privacy Policy

1. Introduction

This Privacy Policy describes what Linkbase ("we", "our", or "us") collects, how we use it, and who helps us run the service when you use our mobile app and website. We try to collect as little as possible: you can use Linkbase without telling us who you are.

2. Information We Collect

2.1 Your Account

Your account is an anonymous user ID created on your device. You do not need to give us your name, email address, or phone number to use Linkbase. We only collect an email address if you choose to turn on sync or backup, so you can get back into your account on another device. We never ask for your name or home address. Because of this, we can see that an account has people, memories, and objects in it, but not who that account belongs to.

2.2 Content You Add

We store the content you add so the app can work and so you can search it: the people you save and their details, notes and facts, memories, objects, reminders, tags, and the photos and videos you attach. This content is yours. We use it only to provide the service to you.

2.3 Information Collected Automatically

To keep the app working and to apply your plan's limits, we record basic technical and usage information linked to your anonymous ID, such as app version, error logs, how many searches or card scans you have used, and how many seconds of voice input you have used. Crash reports may include your device model, operating system version, and app version. The app also sends anonymous usage analytics, described in section 11.

2.4 Device Permissions

Linkbase asks for access only when you use a feature that needs it: the microphone for voice input, the camera or photo library for photos, scans, and videos, and your phone contacts only when you choose to import or export them. You can change these permissions in your device settings at any time. Linkbase does not track your location.

2.5 Your Mind Tests and Research Surveys

Your Mind is an optional, free section of the app for learning about mental imagery and memory. Its tests (for example the VVIQ) save your answers and results on your account. Only you can see them, you can delete any result, and they are deleted with your account.

Research surveys work differently and ask for your consent first. Your answers are stored without your account ID and without a date. They are held in a queue for up to about a day and then moved, mixed in shuffled batches with other people's answers; from that point they cannot be linked back to you. They are used for aggregate totals shown in the app and may be shared with researchers only as anonymised data. Once batched, they cannot be found or deleted later, even if you delete your account. A separate record notes only that you took part, so you are not asked twice; that record is deleted with your account.

3. How We Use Your Information

We use the information we collect to:

• Store, organize, and search your people, memories, objects, and reminders
• Carry out magic voice and search requests you make
• Verify your email address if you choose to sync or back up
• Check your subscription status and apply plan limits
• Understand which features are used so we can improve the app
• Fix bugs, keep the service reliable, and prevent abuse
• Respond to your questions and support requests

4. Information Sharing and Disclosure

We never sell your information and we never use your content for advertising. We only share information in these cases:

• With the service providers listed in section 10, only so they can do their part in running Linkbase
• When you create a share link: anyone with that link can see the details you chose to include until the link expires
• Anonymised Your Mind research survey answers and totals, which are not linked to your account, may be shared with researchers (see section 2.5)
• To comply with legal obligations or respond to lawful requests
• To protect our rights, property, or safety, or that of our users
• In connection with a merger, acquisition, or sale of assets, under the same protections described here

5. Data Security

All data travels between the app and our servers over HTTPS (TLS). Access to our servers and storage is restricted, and we take reasonable technical measures to protect your information. No method of transmission or storage is 100% secure, so we cannot guarantee absolute security.

6. Data Retention and Deletion

We keep your content for as long as your account exists, so it is there when you need it. You can export your connections from the app at any time.

You can delete your account at any time from Settings in the app. Deleting your account deactivates it immediately; all its data (every person, memory, object, reminder, photo, and video) is permanently deleted within 30 days. If you tell us why you are leaving, we keep that note. You can also ask us to delete it by emailing kaloyan@bozhkov.com. See how to delete your account for the steps.

Anonymous research survey answers from Your Mind (section 2.5) are not linked to your account once batched, so they are kept after your account is deleted and cannot be removed individually.

7. Your Privacy Rights

Depending on your location, you may have certain rights regarding your personal information:

• Access to your personal information
• Correction of inaccurate information
• Deletion of your personal information
• Restriction of processing
• Data portability
• Withdrawal of consent

8. Children's Privacy

Linkbase is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If we become aware that we have collected personal information from a child under 13, we will delete it promptly.

9. International Data Transfers

Our servers and service providers may process your information in countries other than your own. When that happens, we rely on the safeguards required by applicable data protection laws.

10. Service Providers

We use a small number of trusted providers to run Linkbase. Each receives only what it needs to do its job:

• AI processing (OpenAI, OpenRouter, Voyage AI): magic voice and search requests pass through our servers and are processed by these third-party AI providers only to fulfil the request you made, such as transcribing a voice note, filling in a profile, or matching a scanned object photo.
• On-device dictation (Apple, Google): some voice input uses your phone's built-in speech recognition, which is handled by your device maker under their terms.
• Photo and video storage (Amazon Web Services S3): the photos and videos you add are stored on AWS S3.
• Email (Resend): used to send transactional emails, such as verifying your address if you turn on sync.
• Crash reporting (Sentry): receives crash and error reports from the app so we can fix problems.
• App analytics (Google Analytics for Firebase): receives anonymous usage events from the app so we can see which features are used. See section 11.
• Payments (Apple App Store, Google Play): subscriptions are purchased and billed by Apple or Google. We receive a receipt to confirm your plan, but we never see your card details.
• Website hosting (Vercel): hosts this website and share-link pages.

11. Analytics and Cookies

11.1 In the App

The Linkbase app uses Google Analytics for Firebase to understand how the app is used, so we can improve it. It receives:

• Which screens you open
• Which features you use, for example that a person, memory, object, or reminder was added, that a search, card scan, or voice command was used, that onboarding was finished, or that a subscription was started
• Basic technical information such as app version, device model, operating system, language, and approximate country or region
• A random app instance ID that Firebase creates on your device

It never receives your content: no names, notes, facts, photos, search text, voice recordings, or contacts. We do not send your Linkbase account ID or email address to Google, so these analytics are not linked to you. The app does not use the advertising identifier (IDFA or Android advertising ID), does not track you across other apps or websites, and does not use analytics for advertising.

You can turn app analytics off at any time in the app under Settings, Share usage analytics. When you turn it off, the app stops sending analytics and clears the analytics data stored on your device.

11.2 On This Website

This website uses the following tools:

• Vercel Analytics: counts page views and visits in aggregate so we can see how the website is used. It uses no cookies and does not identify you, so it is always on.
• Google Analytics 4: helps us understand how visitors find us. It is currently switched off on this website. If we turn it on, it will only load after you accept it in a cookie banner, and Google will then set cookies whose names start with _ga and receive information such as the pages you visit, your approximate location, and your browser and device type. Google Analytics 4 does not log or store IP addresses. If you decline, it never loads.

12. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will post the new version here and update the "Last updated" date. Your continued use of Linkbase after any changes means you accept the updated policy.

13. Contact Us

If you have any questions about this Privacy Policy or our privacy practices, please contact us at: