How to reach us
- Support email
- support@gestu.ca
- Business & sales
- sales@gestu.ca
- Privacy requests
- privacy@gestu.ca
- Legal notices
- legal@gestu.ca
- Standard SLA
- Replies within 2 business days (support@gestu.ca)
- Business SLA
- 24-hour priority response for Business licences
Billing, receipts & card statements (LINK.COM* GESTU)
Gestu Pro subscriptions are sold through Stripe Managed Payments, with Link (link.com) acting as the Merchant of Record:
- Credit card statement descriptor: Your bank or card statement will show LINK.COM* GESTU.
- Receipts, tax invoices & cancellation: Link (link.com) handles official receipts, GST/HST/VAT tax invoices, payment method updates, and one-click subscription cancellation via the link in your receipt email.
- 14-day money-back guarantee: If Gestu Pro isn't right for you within 14 days of purchase, request a full refund through your Link receipt or email support@gestu.ca. See our Refund Policy for full details.
Before you write to us
Include these details in your message so we can help you in a single reply:
Your phone and Android version
The model of your phone, its Android version, and available RAM.
Settings → About phone
Your Gestu version & build
Which version of Gestu you have installed (e.g. v1.6.0 direct-download FOSS build).
Gestu → Settings → About
What you did, what happened
The steps you took, any error code shown (such as device_limit), and what you expected.
Exact wording beats a summary
On-device, BYOK, or Gestu Pro?
Whether you were using a local LiteRT/Gemma model, your own API key, or Gestu Pro managed AI.
Gestu → Settings → Gestu Pro
What we can and cannot help with
- We can help with installing the signed APK (Download Guide), activating your Gestu Pro code (Activation Guide), resetting a used-up device seat after a phone reset, billing and refunds, and real bugs.
- We can explain how data routing works: on-device models run locally on your phone, Gestu Pro requests are processed by our cloud inference provider via pro.gestu.ca, and BYOK keys connect directly to the provider you configured under their policies.
- We cannot recover conversations or files stored on your phone. Conversations are stored locally in app-private storage on your device, and your API credentials are encrypted with Android Keystore (AES256_GCM) — we never hold a copy of your local database. Back up what matters to you.
- We cannot retrieve your chat history from our servers, because we do not store your prompts or conversation history.
- We cannot send an activation code to a different email address than the one used at checkout unless we can verify your purchase receipt.
If a cloud provider is slow or unreachable
When you use Gestu Pro, requests are routed through pro.gestu.ca to DeepSeek V4.1 Flash processed by our cloud inference provider. If you also configure your own API keys (BYOK across 30+ supported providers) or download an on-device Gemma / LiteRT model, you can switch models at any time — and on-device models continue working completely offline without an internet connection.
Privacy and legal requests
Questions about your personal data are handled under our Privacy Policy at privacy@gestu.ca.
Formal legal notices should be sent to legal@gestu.ca. We can only produce records we actually hold (such as billing/licence records, waitlist consent records, and support emails) — never local conversations or files stored on your device.