Privacy Policy

Effective Date: 6 November 2026

Tachyon Bit Limited ("Tachyon Bit", "we", "us", or "our") provides the Tachyon Receipt mobile application ("Tachyon Receipt" or the "App"). This Privacy Policy explains how information is handled when you use the App.

1. Privacy Summary

Tachyon Receipt is a local-first receipt archive. You can manually enter receipt information, attach a photo or PDF for viewing, organise receipts with folders and tags, search your archive, and export selected records to Excel and ZIP files.

The Android version is offered as a one-time paid download through Google Play. The price shown at purchase may vary by country or region and may change over time. The purchase is processed by Google Play. The App does not access or store your payment credentials. The App has no trial period, subscription, in-app purchase, user account, or advertising. The App does not provide OCR, an online account service, cloud synchronisation, or an App-operated cloud backup or restore service.

Receipt information and attachment copies are stored in the App's storage on your device. The App does not automatically send receipt content, attachments, or a device identifier to a Tachyon Bit server. Some information may be processed by Google, Apple, your operating system, or an app you choose to use for backup or sharing, under that provider's own terms and privacy policy.

2. Information Processed on Your Device

2.1 Receipt information

Information you enter may include a receipt title, merchant name and address, product type, purchase date, currency, subtotal, tax, total, product descriptions, quantities, prices, folders, and tags. Receipt records may contain personal or financial information about you or another person, depending on what you enter.

The App processes this information on your device to save, display, organise, search, calculate, and export your receipts. It is not sent to Tachyon Bit by the App.

2.2 Photos and PDF attachments

You may select one supported image or PDF attachment for a receipt, or use the camera to capture an image. The App receives the item you select through the operating system's photo, camera, or file interface and copies it into App-managed storage so it remains available in the App. The App does not scan your photo library or files for other content. Images and PDFs are viewed locally within the App. PDF files are parsed and displayed using an embedded component, without being uploaded to an external service for viewing. The App does not perform OCR or automatically extract receipt information from attachments.

Files you select may contain embedded metadata, such as capture dates, device details, author information, or existing location/GPS data. The App does not provide a general metadata-removal step when importing or exporting attachments. Depending on the file and its source, this information may be retained in saved and exported copies. Review or remove sensitive metadata before adding or sharing a file.

2.3 App settings and legal consent

The App stores settings such as your selected language and default currency on your device. It also stores the versions of the Privacy Policy and Terms of Service you accepted and the time of acceptance. This record is used locally to determine whether the current legal documents have been accepted; it is not sent to Tachyon Bit.

2.4 Copy, Paste, and the Clipboard

The App does not continuously monitor clipboard contents. When you choose to copy text, including text selected in a PDF, it places the selected text on the system clipboard. When you choose to paste into an App input field, it reads the pasted content to carry out your request. Clipboard retention, history, and any cross-device synchronisation depend on your operating system, settings, and clipboard services; the App does not automatically clear the clipboard. If you paste or share text with another app, that app's provider handles the information under its own policies.

2.5 Export cleanup records

The App stores local cleanup records for exports it successfully registers. These include an export identifier, name, creation time, and references to the export folder, ZIP file, and any retained sharing ZIP copy. A location reference may be a file path or a storage-provider reference. These records are used to display and clean up listed exports; the App does not send them to Tachyon Bit. Records are removed when their cleanup is recorded as complete; records for failed cleanup remain available for you to retry.

3. Storage, Deletion, and Backups

Receipt records, settings, export cleanup records, and attachment copies are kept in App storage on your device. A receipt moved to the App's Trash remains stored until you restore it or permanently delete it. When you permanently delete a receipt, the App also attempts to remove its App-managed attachment copy. The original photo or file from which an attachment was imported is not deleted by the App. If removal of an App-managed attachment copy fails after permanent deletion, the App retains a cleanup task and retries at a later opportunity, including a subsequent startup.

The App does not provide its own cloud backup, cloud synchronisation, or backup-file restoration feature. Android, Apple, or another device or platform provider may include App data in a system-level backup or migration according to your device settings and that provider's services. Tachyon Bit does not control those platform backups. An export you create is saved to the folder you select and remains there until it is removed, including through the Clear exported files feature described below. Uninstalling the App or clearing its data may remove receipt records, attachment copies, and export cleanup records stored only in the App, without removing exported files outside App storage. If cleanup records or folder access are lost, you may need to manage remaining exports through your file manager or storage provider. Preserve important information before uninstalling or clearing App data.

Exporting also creates working copies in local temporary storage and normally retains a ZIP copy in the App's cache so you can share the completed export. This ZIP can contain the same receipt information and attachments as the export, even if you do not subsequently share it. The App attempts to remove working copies when an export completes or fails. They may remain if cleanup fails or the export is interrupted.

At the start of a later export, the App attempts to remove retained sharing ZIP copies older than seven days. Cleanup is best effort and is not scheduled for the exact expiry time: copies may remain longer if you do not export again or removal fails. The operating system may remove cached files sooner. This automatic cache cleanup does not delete export folders or ZIP files saved to your selected destination.

In More > Clear exported files, you can select all listed exports or choose individual exports and confirm deletion. For each selected export, the App attempts to delete its recorded export folder and all its contents, including the Excel workbook and exported attachment copies, the accompanying ZIP file, and any recorded sharing ZIP copy retained in the App's cache. This removes files directly; they do not enter the App's receipt Trash, and the App cannot restore the deleted export files. It does not delete receipt records, folders, tags, or receipt attachments stored in the App, or original source photos or files kept outside the selected export folders.

The cleanup list covers only exports recorded locally from the introduction of this feature onward. The feature does not scan for earlier or otherwise unregistered exports, or search for moved, renamed, or additional copies. File removal depends on access to the recorded locations and the selected storage provider, and may fail or complete only in part. The page reports cleanup results and retains failed entries for you to retry; the App does not automatically retry failed export deletions at startup. Remaining files may need to be managed through your file manager or storage provider.

Permanently deleting a receipt does not update or remove its information from previously created exports, retained export/share caches, copies received by other apps or people, or system backups. Export cleanup is a separate action with the scope described above. Neither receipt deletion nor Clear exported files recalls copies already received by other apps or people, or removes separately saved copies or system backups. Those copies must be managed with the recipient or relevant provider; App export caches follow the cleanup behaviour above.

The App uses the operating system's App storage protections. Security also depends on your device, its lock and backup settings, and who can access it. The App does not add a separate encryption layer to its local receipt database or attachment copies.

4. Exporting and Sharing

When you export receipts, the App creates an export folder containing an Excel workbook and attachment copies, together with an accompanying ZIP package, within a directory you choose. These files may contain receipt fields, tags, and copies of attachments. Exported files are outside the App's private storage and are subject to the access controls of the selected folder or storage provider. Clear exported files can remove the listed export folder and its contents, the accompanying ZIP file, and the recorded App sharing copy as described in Section 3.

If you choose to share an export or selected text through the system share interface, the selected receiving app or service may receive, upload, or retain it. Review the recipient before sharing. The recipient's privacy policy and terms apply after you share.

5. Information We Receive

The App has no Tachyon Bit-operated account or receipt-content server and does not use advertising, analytics, or crash-reporting SDKs in the current release. We do not receive the receipt records or attachments stored in the App through normal App use.

If you contact us directly, we receive the contact details, message content, and attachments you choose to provide. Attachments may include screenshots, receipt examples, or diagnostic information you send for support. Providing these materials is voluntary; please share only what is needed for your request. We use this information to respond, provide support, handle privacy requests, maintain necessary business records, and meet legal obligations. We retain correspondence and its attachments only for as long as reasonably necessary for those purposes or as required by law.

We use email and communications service providers to deliver and store this correspondence on our behalf. These providers process messages and attachments as part of providing those services. We remain responsible under applicable privacy law for personal information we hold or have processed on our behalf. This support processing is separate from the independent platform and user-selected services described below.

Google Play, Apple, operating-system providers, device manufacturers, and any app or storage provider you choose may process information needed for app distribution, device functionality, system backups, file selection, or sharing under their own policies. Their processing is not controlled by this Privacy Policy.

6. Children

The App is a general-purpose personal receipt archive and is not specifically directed to children. We do not knowingly collect information from children through an online App service. If you believe a child has provided personal information directly to Tachyon Bit, please contact us.

7. Your Choices and Privacy Requests

You can view, edit, export, or delete receipt information in the App. You can restore a receipt from Trash or permanently delete it there. In More > Clear exported files, you can select all or individual listed exports for deletion after confirmation, subject to the scope and access requirements in Section 3. You can also manage camera, photo, file, and system-backup access through your device settings, where those controls are available.

Because receipt records and attachment copies are stored locally and are not available to Tachyon Bit, we cannot access, correct, or delete them remotely. For personal information that Tachyon Bit may hold, such as support correspondence, you may contact us to request access or correction, or to raise a privacy concern. We will handle requests in accordance with applicable law, including the New Zealand Privacy Act 2020 and Australian privacy laws where applicable. Nothing in this Policy limits rights that cannot lawfully be limited.

8. International Processing

Tachyon Bit Limited is based in New Zealand. The App does not upload receipt content to Tachyon Bit for hosting. Support messages and attachments you choose to send us may be processed in New Zealand or other countries by our email and communications service providers, depending on the services and their infrastructure. Providing those services does not give them automatic access to the receipt database or attachments stored only inside the App.

Platform providers and any third-party apps or storage services you choose may also process information in other countries under their own terms and safeguards.

9. Changes to This Policy

We may update this Policy when the App, its data practices, or applicable requirements change. The effective date above identifies the current version. If a change requires renewed consent, the App will present the updated documents before you continue using it.

10. Contact Us

For privacy questions, requests, or complaints, contact:

Privacy Officer Tachyon Bit Limited 96 Whangaparaoa Road, Red Beach New Zealand 0932 Website: https://tachyonbit.com Email: [email protected] Phone: +642108252430