Terms of service

1. Provider

daxpractice.com (“DAX Practice”) is provided by Sascha Heyer, hello@daxpractice.com. Further details are in the legal notice. These terms apply to the use of the site and to purchases of DAX Practice Pro.

2. What is free

The first three lessons can be used without an account. With a free account (your email address or Google sign-in) you can use all free lessons, and your progress, streak and points are saved to your account.

3. DAX Practice Pro

Pro opens every Pro lesson. The Pro lessons available at the time of purchase are listed in the lesson register and on the plans page; lessons marked “in writing” are planned and are included when they are published, without a promised date. Pro is available as a monthly or yearly subscription, or as Lifetime: a single payment for access to Pro for as long as DAX Practice is offered. Access is personal and may not be shared. The DAX engine is written for these lessons and covers a subset of DAX; results can differ from Power BI in edge cases.

4. Prices and payment

Pro costs 19 USD per month, 79 USD per year, or 199 USD, paid once for Lifetime. Prices are in US dollars and are final prices. The price shown in Stripe Checkout at the time of purchase applies. Payment is handled by Stripe; subscriptions are charged in advance for each period, Lifetime once. Promotion codes apply as stated when you redeem them.

5. Term and cancellation

A subscription renews automatically for the same period until you cancel. You can cancel at any time in the billing portal (Account, Manage subscription). The cancellation takes effect at the end of the paid period, and access continues until then. Lifetime has no term and nothing to cancel.

6. Right of withdrawal

Consumers can withdraw from a purchase within 14 days of buying it, without giving a reason, by email to hello@daxpractice.com. The payment is refunded through Stripe, and Pro access ends with the refund. Details and the model withdrawal form are in the refund and cancellation policy.

7. Your account

Keep access to your email account and Google account safe. You can delete your account at any time under Account, Delete account; a running subscription has to be cancelled first. Deleting the account ends Pro access, including Lifetime.

8. Availability and liability

We aim to keep the site available but can’t guarantee uninterrupted availability. We are liable without limitation for intent and gross negligence and for injury to life, body or health. For slight negligence we are liable only for the breach of essential contractual obligations, limited to the damage typical and foreseeable for this kind of contract. Liability under the German Product Liability Act is unaffected.

9. Changes

We may change these terms with at least 30 days’ notice by email. If you don’t agree, you can cancel before the change takes effect.

10. Applicable law

German law applies, excluding the UN Convention on Contracts for the International Sale of Goods. If you are a consumer, the mandatory consumer protection rules of the country where you live remain unaffected.

Updated: November 2026