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Privacy Policy

Last updated: 5 August 2026

1. Introduction

Pycter is a photo sharing and synchronization application designed with privacy as a core principle.

Pycter allows users to store and share photos across devices and with other people. Photos and their metadata are encrypted on your device before they are transmitted, and remain encrypted on our servers.

Albums can additionally be protected with end-to-end encryption (E2EE), where the key is generated on your device and never reaches our servers, so that Pycter cannot decrypt the album at all. Encryption is chosen per album and is not enabled by default, because losing the key means losing the album. Section 5 sets out exactly what Pycter can and cannot see in each case.

This Privacy Policy explains how personal data is collected, used, stored, and protected when you use:

  • the Pycter mobile applications (Android and iOS),
  • the Pycter desktop applications,
  • and the Pycter website at pycter.com.

This policy is written in accordance with the General Data Protection Regulation (GDPR) and applicable Belgian and European Union data protection laws.

2. Who we are

Data controller: Louis Regout, Belgium.

Contact: privacy@pycter.com

3. Who can use Pycter

Pycter is intended for the general public and is not designed for children. You must be at least 16 years old to use Pycter.

Pycter does not knowingly collect personal data from children under the age of 16. If you believe that a minor has provided personal data, please contact us so it can be removed.

4. What data we collect

4.1 Data you provide

Depending on how you use Pycter, we may process:

  • Email address (when an account is created)
  • An account identifier issued by our authentication system
  • A numeric user identifier
  • The names you give your devices (for example "Phone")
  • An encrypted copy of your account key, which only your own devices can open
  • The fingerprint (hash) of your account recovery key — never the key itself
  • Subscription or payment status (when paid plans are implemented)

Creating an account is not required for the free tier: Pycter can be used on mobile without providing an email address.

4.2 Your content

The following data is encrypted on your device before upload, and is stored on Pycter servers in encrypted form only:

  • Photos, videos and thumbnails
  • Filenames and EXIF metadata, including location
  • Album titles
  • Nicknames shown to other album members

Encryption on its own does not mean Pycter is unable to read it — that depends on who holds the key. Section 5 explains both cases.

4.3 Technical and operational data

For the proper functioning and security of the service, Pycter may process:

  • IP address
  • Device and application identifiers
  • Push notification tokens (Firebase Cloud Messaging)
  • Fingerprints (hashes) of the tokens that keep your devices signed in
  • The time each of your devices was last seen online
  • Connection and synchronization metadata
  • Storage and upload usage counted against your quota
  • Device integrity signals used to detect abuse or tampering
  • Crash diagnostics on Android: stack traces, device model and an application installation identifier

This data is not used for advertising or behavioral profiling.

5. Encryption

Every album is encrypted before it leaves your device, so that our hosting and storage providers never hold anything readable. What differs from one album to the next is who holds the key.

5.1 Standard albums

Standard albums are the default. They are encrypted with a key that Pycter is able to derive. Your content is therefore protected against our providers and against anyone intercepting it in transit, but Pycter is technically able to access it.

5.2 End-to-end encrypted albums

When you enable end-to-end encryption on an album, its key is generated randomly on your device and is never transmitted to or stored on Pycter servers. It reaches the people you invite through the anchor of the invitation link, which browsers do not send to servers.

Pycter cannot decrypt an end-to-end encrypted album. Neither can we recover it if the key is lost — which is why encryption is a choice you make per album rather than the default.

5.3 What Pycter can see

Data Standard album End-to-end encrypted album
Photos and videosReadable by PycterNot readable
Location and other EXIF metadataReadable by PycterNot readable
Album title and nicknamesReadable by PycterNot readable
Member listVisibleVisible
Number of media and their file sizesVisibleVisible
Capture time of each photoVisibleVisible
Media identity (whether two albums hold the same file)VisibleVisible

The last four rows stay visible to Pycter in both cases, because the service cannot work without them:

  • the member list determines who media must be delivered to, and lets you audit who is in your album;
  • media counts and file sizes are how storage and upload quotas are enforced;
  • capture times let long albums be ordered chronologically without downloading them first;
  • media identity is a fingerprint identical files share, used to store a file once rather than once per album. It means Pycter can tell that the same photo appears in two albums, without being able to see the photo itself.

6. How sharing works

When you share content within an album:

  • you explicitly consent to that content being distributed to album members,
  • the content is encrypted before leaving your device,
  • Pycter servers only relay encrypted data.

Content already synchronized to other users' devices cannot be retroactively revoked. Leaving an album prevents future synchronization but does not remove data already received by others.

6.1 What other members can see about you

Other members of an album can see:

  • that you are a member of it,
  • the media you contribute and any captions you write,
  • roughly when you were last online. This is capped: if none of your devices has connected for more than 3 days, other members are shown nothing rather than a date.

The names you give your own devices are visible to you alone.

7. Data retention

Data Retained
Account dataUntil you delete your account
Media in transit between devices2 days after upload
Thumbnails180 days
Media held in cloud backup (paid plans)Until deleted by the album's members
Invitation links14 days
Albums with no remaining memberDeleted daily, together with their content
Last-seen time shown to other members3 days maximum
Technical logsRetained briefly for security and abuse prevention

Encrypted content remains available while at least one album member retains access. Once a member's device has downloaded a photo, that copy lives on their device and is no longer governed by these server-side periods.

8. Account deletion

Users may delete their Pycter account at any time, from the application or at pycter.com/delete-account. Upon deletion:

  • email address and identifiers are removed,
  • sign-in credentials are deleted from our authentication system,
  • your devices, their session tokens and your recovery key fingerprint are removed,
  • encryption keys stored on the device are destroyed,
  • albums left with no remaining member are deleted together with their content,
  • subscription information is deleted where legally possible.

Content previously shared with other users may remain on their devices, as Pycter cannot remove data already synchronized.

9. Third-party services

Pycter relies on a limited number of trusted service providers acting strictly as data processors:

Provider Purpose Location
Google CloudApplication servers and databaseEU — Belgium
Cloudflare R2Encrypted media storage and transferEU
Amazon Web ServicesLong-term encrypted media storageEU — Sweden
Firebase Cloud MessagingPush notificationsGoogle — EU / United States
Firebase App CheckAbuse and tampering detection, using Play Integrity on Android and App Attest on iOSGoogle — EU / United States
Firebase CrashlyticsCrash diagnostics, Android onlyGoogle — EU / United States
BrevoDelivery of sign-in codes by emailEU — France
Google, AppleOptional sign-in providers, when you choose to sign in with themEU / United States

Authentication itself runs on Pycter's own infrastructure; account credentials are not entrusted to a third-party identity provider unless you choose to sign in with Google or Apple.

These services may process technical identifiers strictly necessary for security and functionality. They are not permitted to use data for advertising or profiling.

10. Analytics and tracking

Pycter does not display advertising, sell personal data, track users across apps or websites, or perform behavioral profiling. No advertising identifiers are used, and there is no product analytics or usage tracking.

The one thing collected automatically is crash diagnostics on Android: when the application crashes, a report containing the stack trace, the device model and an application installation identifier is sent so the fault can be fixed. It carries none of your photos, album content or encryption keys.

11. International data transfers

Pycter servers, database and media storage are located within the European Union.

Push notifications, abuse detection and crash diagnostics rely on Google services that may process technical identifiers outside the EU. Those transfers are covered by appropriate safeguards, including Standard Contractual Clauses. Your photos and album content are never part of them.

If the service expands internationally, personal data may be processed outside the EU using the same safeguards, including strong encryption.

12. Legal bases for processing

Under Article 6 of the GDPR, Pycter processes personal data on the following bases:

  • Performance of a contract — operating the service you asked for: your account, the synchronization of your albums between your devices and the members you invite, and the storage that makes it work.
  • Legitimate interests — keeping the service secure and usable: detecting abuse and tampering, enforcing storage and upload quotas, brief technical logging, and crash diagnostics used to fix faults. These interests are balanced against your rights, and none of them involve profiling or advertising.
  • Consent — features you switch on yourself, such as push notifications. Consent can be withdrawn at any time, in the application or by contacting us.
  • Legal obligation — where data must be retained or disclosed to comply with the law.

13. Your rights under GDPR

Under the GDPR, you have the right to access, correct, delete, restrict, or port your personal data, and to withdraw consent at any time. Contact us at privacy@pycter.com to exercise these rights.

You also have the right to lodge a complaint with your local data protection authority. In Belgium: Autorité de protection des données (APD).

14. California residents

If you are a California resident, you have additional rights under the CCPA/CPRA, including the right to access and delete your personal data. Pycter does not sell personal data and does not share personal data for advertising purposes.

15. Changes to this policy

This Privacy Policy may be updated to reflect changes in the service or legal requirements. When significant changes are made, the updated version will be published on this page with a revised "last updated" date.

16. Contact

For any privacy-related questions or requests: privacy@pycter.com

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