Contact & Support
Last updated 29 August 2026
AssayProof is a small operation, which means you reach a person who knows the statistics rather than a ticket queue.
Email us
One address for everything: support@assayproof.com
Please say which calculator or study you were using, and include the numbers you entered if a result looks wrong. A correctness report is the most important email we can receive, and it gets answered first.
Support and bug reports
Something not working, or a number you think is wrong.
Aim: 1 business day
Billing, refunds and cancellation
Covered by our refund policy. Email from the address on your account.
Aim: 1 business day
Data requests
Access, correction or deletion of your data, under the privacy policy. You can export studies yourself at any time.
Answered within 30 days
Security disclosures
Please report suspected vulnerabilities privately before disclosing them publicly. We will confirm receipt and keep you updated.
Aim: 2 business days
Who you are contacting
AssayProof is operated by Ruel Ryan Rosal, a sole proprietor based in the Republic of the Philippines. Business hours are Philippine Standard Time (UTC+8), so replies to overnight email arrive the following working day.
Subscriptions are billed by Paddle as merchant of record, so payment correspondence and statement entries come from them. Email us either way and we will sort it out.