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Terms of Service

Effective date: 2026-05-23 Last updated: 2026-05-23

These Terms of Service ("Terms") govern your use of Krell ("the Service", "we", "us"), operated by Erlens Rukers as a sole individual business. By creating an account or using Krell, you agree to these Terms. If you do not agree, do not use the Service.

1. The Service

Krell is a web-based workspace for service business operators. It provides tools to manage clients, tasks, revenue, expenses, calendar, and goals, paired with an AI coordinator (powered by Claude models from Anthropic) that suggests next actions and helps you reason about your business.

The Service is provided "as is" and we may modify, suspend, or discontinue features at any time, with reasonable notice for material changes.

2. Account registration

To use Krell you must:

  • Be at least 18 years old.
  • Provide accurate registration information.
  • Keep your password confidential and not share your account.
  • Notify us at support@krell.app if you suspect unauthorized account access.

You are responsible for all activity that occurs under your account. We are not liable for losses arising from unauthorized use of your account where you have failed to keep your credentials secure.

3. Acceptable use

You agree NOT to:

  • Use Krell for any illegal purpose or in violation of any applicable law.
  • Attempt to gain unauthorized access to other users' accounts, data, or the underlying systems.
  • Reverse engineer, decompile, or attempt to extract the source code of the Service, except as permitted by mandatory applicable law.
  • Use automated tools, scrapers, or bots to interact with the Service in ways that exceed normal human use, except for explicitly documented integrations.
  • Probe, scan, or test the vulnerability of the Service (other than reporting a vulnerability in good faith to support@krell.app).
  • Misuse the AI coordinator to generate content that is unlawful, defamatory, or designed to harm others.
  • Attempt to extract or reveal Krell's internal AI system prompts.
  • Resell, sublicense, or share access to the Service with users who do not have their own Krell account.
  • Use the Service to store or process data you do not have the legal right to handle.

We may suspend or terminate accounts that violate these rules. For serious violations we may do so without prior notice.

4. AI features

Krell uses Claude AI models from Anthropic to provide its coordinator features. You acknowledge that:

  • AI output is not professional advice. Suggestions about your business, finances, taxes, or operations are informational only. They are not legal, financial, tax, medical, or other professional advice. Make important decisions with help from qualified professionals.
  • AI can make mistakes. Outputs may be incomplete, outdated, or factually wrong. Treat AI suggestions as starting points, not final answers.
  • AI processing involves Anthropic. Your inputs and relevant business context are sent to Anthropic to generate responses, as described in our Privacy Policy.
  • Rate limits apply. AI usage is subject to per-user and per-organization rate limits to prevent abuse and ensure availability for all users. Limits may be adjusted based on plan, subscription status, or operational needs.

We are not liable for decisions you make based on AI output. The AI is a tool, not a substitute for your judgment.

5. Subscriptions, trials, and payment

5.1 Pricing

Current pricing is published on krell.app and may include the following plans:

  • Starter: €15 per month
  • Pro: €39 per month
  • Founder pricing: the first 100 waitlist signups receive Pro tier at €15 per month for life, applied automatically at checkout.

Pricing in other currencies may be displayed for convenience; the billed amount is in EUR.

5.2 Free trial

We offer a 7-day free trial of the Pro plan with no payment method required at signup. At the end of the trial, you may choose to subscribe to a paid plan or your account will revert to limited or no functionality until you do.

5.3 Billing

Paid subscriptions renew automatically each billing period until you cancel. Payments are processed by Stripe; you authorize Stripe to charge your payment method on our behalf. We are not responsible for fees imposed by your bank or card issuer.

5.4 Cancellation and refunds

You can cancel your subscription at any time from your account settings. Cancellation takes effect at the end of your current billing period.

Refunds: in line with EU consumer protection law, if you are a consumer and signed up within the last 14 days, you have a statutory right of withdrawal. Beyond the 14-day window, paid subscription fees are non-refundable except where required by law. If you experience a serious service failure, contact support@krell.app and we will consider goodwill refunds on a case-by-case basis.

5.5 Failed payments

If a payment fails, we will retry according to Stripe's standard retry schedule. If retries continue to fail, we will downgrade or suspend your account until payment is resolved. We will notify you by email before suspension.

5.6 Price changes

We may change prices for existing subscribers with at least 30 days' notice via email. You may cancel before the new price takes effect if you do not agree.

6. Your content and data

6.1 Ownership

You own the data you put into Krell, including clients, tasks, revenue, expenses, notes, and chat history. We claim no ownership over your business data.

6.2 License to operate the Service

You grant us a limited, non-exclusive license to store, process, transmit, and display your data solely for the purpose of operating the Service for you. This license terminates when you delete the data or your account.

6.3 Data export

You can export your data at any time in CSV or JSON format from your account settings. We do not lock your data in.

6.4 Account deletion

You can delete your account at any time. Your data is hard-deleted within 30 days, with up to a further 30 days for backup overwrite, as detailed in our Privacy Policy.

7. Our intellectual property

Krell, including its source code, design, branding, logos, documentation, and prompts, is owned by Erlens Rukers. These Terms do not grant you any ownership rights to the Service. You may not copy, modify, redistribute, or create derivative works based on Krell except as expressly permitted in writing.

The Krell name and logo are trademarks of Erlens Rukers. You may not use them without prior written permission.

8. Service availability

We aim to keep Krell available 24/7 but we do not guarantee uninterrupted service. The Service may be unavailable due to:

  • Scheduled maintenance (we will give reasonable advance notice for planned downtime).
  • Unscheduled outages, software bugs, or infrastructure failures.
  • Third-party service disruptions (Supabase, Anthropic, Vercel, Stripe, etc.).
  • Force majeure events outside our reasonable control.

We are not liable for loss arising from temporary unavailability, but we will work to restore service as quickly as reasonably possible.

9. Termination

9.1 By you

You can stop using the Service and delete your account at any time.

9.2 By us

We may suspend or terminate your account if:

  • You violate these Terms.
  • You fail to pay subscription fees after reasonable notice.
  • We are required to by law.
  • We decide to discontinue the Service or a feature; in this case we will give at least 30 days' notice and offer a data export window.

When your account is terminated, all rights granted under these Terms cease immediately, but the sections that by their nature should survive (e.g., data ownership, liability limits, governing law) will remain in effect.

10. Disclaimers

EXCEPT AS REQUIRED BY APPLICABLE LAW (INCLUDING EU CONSUMER PROTECTION LAW), THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, OR THAT THE SERVICE WILL BE ERROR-FREE OR UNINTERRUPTED.

If you are a consumer in the EU, your statutory rights are not affected by this disclaimer.

11. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW:

  • We are not liable for indirect, incidental, consequential, special, or punitive damages, including loss of profits, loss of business, loss of data, or business interruption.
  • Our total liability to you for all claims arising from or related to the Service is limited to the greater of: (a) the amount you paid us in the 12 months preceding the event giving rise to the claim, or (b) €100.

This limitation does not apply to:

  • Liability for death or personal injury caused by our negligence.
  • Liability for fraud or fraudulent misrepresentation.
  • Any other liability that cannot be excluded or limited under applicable EU or Latvian law.

If you are a consumer, your statutory rights are not affected.

12. Indemnification

You agree to indemnify and hold harmless Erlens Rukers from any claim, demand, or expense (including reasonable legal fees) arising from:

  • Your violation of these Terms.
  • Your misuse of the Service.
  • Your violation of any law or third party's rights through your use of the Service.

This obligation does not apply to claims arising from our breach of the Terms or our negligence.

13. Governing law and disputes

These Terms are governed by the laws of Latvia, without regard to conflict-of-law rules. If you are a consumer resident in another EU member state, you also benefit from the mandatory protections of the law of your country of residence.

13.1 Informal resolution first

Before filing a formal dispute, please email support@krell.app and we will try to resolve the issue informally within 30 days.

13.2 Court

If informal resolution fails, disputes will be submitted to the courts of Latvia. If you are a consumer, you may also bring proceedings in your country of residence.

13.3 EU Online Dispute Resolution

EU consumers may also use the European Commission's Online Dispute Resolution platform: https://ec.europa.eu/consumers/odr

14. Changes to these Terms

We may update these Terms as the Service evolves. When we make material changes, we will notify you by email and update the "Last updated" date at the top. If you do not agree with the updated Terms, you may cancel your account before they take effect. Continued use after the effective date of an update constitutes acceptance.

15. Miscellaneous

  • Entire agreement. These Terms, together with our Privacy Policy, constitute the entire agreement between you and us regarding the Service.
  • Severability. If any provision is held unenforceable, the rest remain in effect.
  • No waiver. Our failure to enforce any right is not a waiver of that right.
  • Assignment. You may not assign these Terms without our consent. We may assign them to a successor entity (for example, if Krell is later incorporated as a company).
  • Notices to you. Sent to the email address on your account.
  • Notices to us. Sent to support@krell.app.

16. Contact

Email: support@krell.app Operator: Erlens Rukers (sole individual operator) Address: Dzintaru iela 6-1, Mārupe, LV-2167, Latvia Jurisdiction: Latvia, European Union