Legal

Subprocessors

Version 1.0 · Effective 8 September 2025

AirStrings (Symbionix SL, Barcelona, Spain) uses a small number of trusted third parties ("subprocessors") to help deliver the Service. Each processes personal data on our behalf under a written contract that includes appropriate data-protection terms and, where the subprocessor is located outside the European Economic Area (EEA), appropriate safeguards for international transfers.

This page is referenced by our Data Processing Agreement and forms part of it. It supplements the Privacy Policy, which describes these subprocessors by category.


Current subprocessors

SubprocessorPurposeData categoriesRegionTransfer mechanism
Railway (Railway Corp.)Application hosting and compute for the AirStrings backendAccount, authentication, usage and log data; Customer Content in transit through the applicationUnited StatesSCCs (and, where applicable, the EU–US Data Privacy Framework)
Neon (Neon Inc.)Managed PostgreSQL database storing Service metadataAccount, authentication, project and string metadata, billing metadataUnited States / EUSCCs (and, where applicable, the EU–US Data Privacy Framework)
Cloudflare (Cloudflare, Inc.)CDN delivery and R2 object storage of signed bundlesCustomer Content in signed bundles; request metadata and IP addresses at the edgeUnited States (global edge network)SCCs (and, where applicable, the EU–US Data Privacy Framework)
Stripe (Stripe, Inc. / Stripe Payments Europe)Payment processing, subscriptions, invoicing, taxBilling contact, payment method (held by Stripe), transaction and invoice dataUnited States / IrelandSCCs (and, where applicable, the EU–US Data Privacy Framework)
Resend (Plus Five Five, Inc.)Transactional and notification email (for example, team invitations, account and security notices)Recipient email address, message content and metadataUnited StatesSCCs (and, where applicable, the EU–US Data Privacy Framework)
The transfer mechanism shown is the safeguard each subprocessor relies on for transfers of EEA personal data to a third country. AirStrings is the data exporter to these subprocessors, with the Standard Contractual Clauses (SCCs) as the primary safeguard.

Changes and how we notify you

We may add or replace subprocessors as the Service evolves. When we do, we will give affected customers at least 30 days' advance notice before the new subprocessor begins processing Customer Personal Data.

To receive change notifications, subscribe by emailing support@airstrings.com with the subject "Subprocessors".

As described in the DPA, a customer may object to a new subprocessor on reasonable data-protection grounds within 30 days of the notice. If we cannot resolve the objection, the customer may terminate the affected part of the Service and receive a refund of prepaid, unused fees for that portion.


Questions

For questions about our subprocessors or data protection, contact support@airstrings.com (subject: "Subprocessors").