Subprocessors
Last updated: April 25, 2026Policy set version: 2026-04-25
Overview
We rely on the following material subprocessors and integrations to operate ChessBulb. The list is not exhaustive for every sub-service (for example, email delivery for transactional mail may be added), but it covers the main categories called out in our Privacy Policy. We update this page when we add or replace a subprocessor in a way that matters for your data. Privacy Policy.
Subprocessor list
| Subprocessor | Purpose | Region | More information |
|---|---|---|---|
| Clerk | Authentication, user sessions, and account security | United States / EU (provider regions) | Clerk security & privacy |
| Paymob | Payment processing and card acquiring for student tuition and related charges | Egypt / MENA (per Paymob service configuration) | Paymob policies |
| PostHog | Product analytics and feature usage (may be disabled or minimal in production by configuration) | EU / US (per project configuration) | PostHog privacy |
| DigitalOcean | Hosting, databases, object storage, and logging for the application | Per selected data center / region in your DigitalOcean account | DigitalOcean privacy & trust |
| Realtime / WebRTC media infrastructure | Low-latency audio routing for ChessBulb Classroom | Global edge / region-specific TURN and SFU configuration | Vendor-specific privacy & security (depends on production vendor) |
Onward transfers
Where a subprocessor is located outside Egypt, we address cross-border processing as described in the Privacy Policy, including with contracts and risk measures required under the PDPL.