Open Source Status: The core Qenlo software, crates, SDKs, and documentation are free and open-source software licensed under Apache 2.0. There are no fees, subscriptions, or hidden charges required to download, inspect, or use the open-source repository.

1. Free & Open-Source Software

Because the open-source Qenlo library is distributed free of charge, refunds do not apply to open-source code downloads, Git repository clones, or package manager installations (e.g., via Cargo, npm, or PyPI). You will never be charged for accessing public releases of Qenlo.

2. Commercial Services and Custom Contracts

If you or your organization enter into a separate, written commercial agreement with the maintainer (Akshat Singh Kushwaha) or authorized affiliates—including priority enterprise support, dedicated benchmarking engagements, architectural consulting, or custom dual-licensing—the terms of that specific written agreement, augmented by this Policy, govern all billing and refunds.

3. 14-Day Statutory Right of Withdrawal (EU / UK Consumers)

In accordance with the European Union Consumer Rights Directive (Directive 2011/83/EU) and the UK Consumer Contracts Regulations 2013, consumers located in the European Union or the United Kingdom have the statutory right to withdraw from a purchase of digital services within fourteen (14) calendar days from the date of purchase without providing any justification.

Exceptions to the Right of Withdrawal: Under statutory consumer law, the right of withdrawal ceases if:

4. Refund Eligibility for Paid Engagements

A. Consulting & Engineering Engagements

B. Billing Errors & Duplicate Charges

If you believe you have been erroneously charged or experienced duplicate invoicing, notify us within thirty (30) days of the transaction date. Verified billing errors will be refunded in full immediately.

5. How to Request a Refund

To request a refund or raise a billing inquiry, submit your request in writing with:

Direct your request to:

6. Processing and Payment Method

We review all refund requests within three to five (3–5) business days. Once approved, refunds are credited back to the original payment method (e.g., credit card or bank wire) within five to ten (5–10) business days, depending on your financial institution.