Terms of Use

Rules for using HiddenLogic and digital products

Last updated: August 2026

1. Acceptance

By using hilog.dev you confirm that you have read and agree to these terms. If you do not agree, please do not use the Site.

2. Service

The Site provides information about books, free on-site reading, ebook files sent to an email you provide, registration, and purchase of other products (such as Practice courses). A paper edition may be offered later.

3. Account

You agree to provide accurate information and keep credentials confidential. You are responsible for activity under your account.

4. Intellectual property

Text, illustrations, software, and other materials are protected by law. Purchase or free access does not allow redistribution to third parties without explicit permission from the rights holder.

5. Payments and refunds

Pricing, currency, and refund rules are shown on the purchase flow and order materials. Selected payment provider terms also apply.

6. Limitation of liability

The Site and materials are provided “as is”. To the fullest extent permitted by law we disclaim indirect damages and outages outside our reasonable control.

7. Changes and contact

We may change these terms; the update date is shown above. Questions: support@hilog.dev.