Terms of service

Last updated: 15 October 2026.

1. Provider and scope

These terms govern the Shopify app Valence Metrics provided by Tobias De Cristofaro, Valence Metrics, c/o Impressumservice Dein-Impressum, Stettiner Str. 41, 35410 Hungen, Germany ("we"). The app is offered exclusively to entrepreneurs within the meaning of Section 14 of the German Civil Code (BGB), not to consumers. By installing the app you confirm that you act in the course of your trade, business or profession. The contract language is English.

2. Service

Valence scans selected public pages of your Shopify storefront with automated accessibility checks, shows findings with fix guidance and lets you save image alt text to your products after your confirmation. Pro includes recurring scans. Unlimited scans are subject to fair use; we may rate-limit automated or abusive usage.

3. No legal advice, no guarantee

Automated testing detects only a portion of accessibility barriers. Valence does not provide legal advice and does not certify or guarantee conformance with the ADA, WCAG, the European Accessibility Act or any other law or standard. You remain responsible for your store and its content.

4. Your responsibilities

Review suggestions, especially alt text, before saving them. Only enter a storefront password for stores you are authorized to manage.

5. Plans, billing and cancellation

Paid plans are billed through Shopify at the price shown in the Shopify App Store. You can cancel at any time by uninstalling the app; billing then stops under Shopify's rules.

6. Availability

We aim for high availability but do not guarantee uninterrupted service. Scans may fail for pages that block automated access.

7. Liability

(1) We are liable without limitation for intent and gross negligence, for injury to life, body or health, under the German Product Liability Act, for fraudulently concealed defects and for guarantees expressly given.

(2) For slight negligence we are liable only for breach of an obligation whose fulfilment is essential for the proper performance of the contract and on which you may regularly rely, limited to the damage typical and foreseeable at the conclusion of the contract.

(3) For the free plan we are liable only in the cases of paragraph 1.

(4) Liability for loss of data is limited to the cost of restoration had you made regular backups.

(5) These limitations also apply to our representatives and vicarious agents.

8. Your data and switching

You can stop using the app at any time by uninstalling it; there are no switching or exit fees. Before uninstalling you can copy your scan results and alt text from the app; on request by email we send you an export of your store's data in a common machine-readable format (JSON or CSV) within 30 days. After uninstalling, your data is deleted as described in the privacy policy.

9. Data protection

See our privacy policy. A data processing agreement is available on request.

10. Changes

We will notify you of changes to these terms by email at least 30 days in advance. If you do not object within this period, the changes are deemed accepted; we will point this out in the notice. If you object, either party may terminate the contract. Main obligations and prices are not changed this way.

11. Law and venue

German law applies, excluding the UN Convention on Contracts for the International Sale of Goods. Place of jurisdiction is Remscheid, Germany, where legally permitted.