Terms of Service
Last updated: May 2026
1. Scope and provider
These Terms of Service (“Terms”) govern the use of the web application “addin.studio” available at addin.studio, operated by:
Prokop Solutions, Inh. Jonas ProkopMatthias-Grünewald-Str. 6
78224 Singen
Germany
Email: info@addin.studio
2. The service
addin.studio is a web application for visually creating Microsoft Excel ribbons and exporting the result as a “.xlam” add-in file. The set of features available to a given user depends on the plan they choose (Free, Pro, Team), as described on the pricing page.
We may evolve, modify or discontinue individual features as long as this is reasonable for the user and the principal purpose of the contract is preserved.
3. Conclusion of contract
By creating an account, the user concludes an open-ended contract for the use of the free plan, which can be terminated at any time.
A contract for paid plans (Pro, Team) is concluded by clicking the binding order button in the Polar checkout. Order confirmation is sent by email.
4. Prices and payment
The prices shown on the pricing page at the time of order apply. All prices include statutory VAT.
Payment is processed by the external provider Polar Software, Inc. The Polar terms and privacy notice apply additionally (polar.sh/legal/terms). Invoices are sent by email.
5. Right of withdrawal (consumers)
Consumers generally have a 14-day right of withdrawal under §§ 312g, 355 of the German Civil Code. For digital content not delivered on a tangible medium the right of withdrawal expires under § 356 (5) BGB once we have started performance, provided the consumer has
- expressly consented to performance starting before the expiry of the withdrawal period, and
- confirmed they understand that this consent terminates the right of withdrawal.
Such consent is obtained in the Polar checkout prior to purchase. Without such consent, the statutory 14-day withdrawal period from conclusion of contract applies.
6. Availability
We make reasonable efforts to keep the service highly available but do not warrant any specific minimum availability. Planned maintenance is scheduled to off-peak hours and announced where possible.
7. User obligations
The user agrees:
- to keep their credentials confidential,
- not to upload illegal, offensive or rights-infringing content (e.g. in VBA code, snippet descriptions, icon uploads),
- not to misuse the service, including circumventing security mechanisms, distributing malicious software or generating automated mass traffic.
8. Rights to the output
All rights in the ribbon configurations and exported .xlam files created by the user belong to the user. We obtain a non-exclusive, simple right to process this content as needed to provide the service (storage, display, export).
9. Liability
We are liable without limitation for intent and gross negligence, as well as for damages from injury to life, body or health. Otherwise, liability is limited to typical and foreseeable damages; liability for slightly negligent breaches of non-essential obligations is excluded.
We do not warrant that exported .xlam files run unmodified in every conceivable Excel version, IT environment or security configuration. In particular, VBA macro files may need to be digitally signed and/or allow-listed by IT in corporate environments.
10. Term and termination
The free plan may be terminated at any time by deleting your account. The Pro plan is a one-time payment and does not constitute an ongoing subscription. The Team plan may be terminated with one month notice to the end of the month, unless agreed otherwise. The right to extraordinary termination for good cause remains unaffected for both parties.
11. Data protection
Information on the processing of personal data is provided in our Privacy Policy.
12. Changes to these terms
We may amend these Terms with effect for the future. Users will be notified of changes by email or in-app with reasonable notice. If the user does not object within four weeks of receipt, the amended Terms are deemed accepted.
13. Final provisions
German law applies, excluding the UN Convention on Contracts for the International Sale of Goods. For consumer contracts this choice of law applies only to the extent that the protection granted by mandatory provisions of the law of the consumer’s habitual residence is not withdrawn.
Should individual provisions of these Terms be or become invalid, the validity of the remaining provisions shall remain unaffected.