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Terms of Service

Last updated: July 14, 2026

1. Agreement

These Terms of Service ("Terms") are a contract between you and KVSoft EOOD, UIC 206613460, with registered seat and address at Sofia, zhk. Strelbishte, ul. Mila Rodina 11, vh. E, Bulgaria ("Kassy", "we", "us") and govern your use of the Kassy platform. By creating an account or using the Service you agree to these Terms. If you use the Service on behalf of a company or organisation, you confirm that you are authorised to bind it, and "you" refers to that organisation.

The Service is intended for professional use by practitioners and businesses managing their own clients, scheduling and invoicing.

How we handle personal data is described in our Privacy Policy. The data processing terms in section 10 apply where you enter your clients' personal data into the Service.

2. The Service

Kassy provides software for managing a lesson- or session-based practice: calendar and session management, client records, packages and credits, invoicing with payment links, team workspaces and public booking pages.

Kassy is a technology tool. We are not a party to the relationship between you and your clients, we do not provide, supervise or guarantee the services you deliver to them, and nothing in the Service constitutes legal, tax or accounting advice.

3. Your Account

To use Kassy you must:

  • be at least 18 years old;
  • provide accurate account information and keep it up to date;
  • keep your sign-in access secure — you are responsible for activity under your account;
  • take responsibility for the people you invite to your workspace and their use of the Service.

4. Your Content and Data

You retain all rights to the data you enter into Kassy (client records, sessions, invoices and related content). You grant us the licence needed to host, process, transmit and display that data solely to provide the Service.

You are responsible for the data you enter and the documents you issue: for having a lawful basis to process your clients' personal data, for the accuracy of invoice amounts and recipient details, for your own tax, accounting and invoicing obligations, and for the messages you send to clients through the Service.

5. Acceptable Use

You agree not to:

  • use the Service for unlawful purposes or in breach of applicable law;
  • interfere with or disrupt the Service, probe or circumvent its security, or access data of other workspaces;
  • copy, resell or reverse engineer the Service except to the extent permitted by law;
  • misrepresent your identity or business, or use the Service to send spam or fraudulent invoices.

6. Fees

Kassy offers a free plan and paid plans; current pricing is published on our website. We may change prices or introduce charges for new features with at least 30 days' notice to affected users. Fees exclude any applicable taxes. Payment services provided by third-party providers may carry their own fees under your agreement with the provider.

7. Payment Processing

Online card payments are executed by our payment provider, Paypercut, on its own hosted checkout. Kassy is not a payment institution: we do not hold, control or transfer client funds, and we never receive card data. Invoice pay links may alternatively use Revolut, under Revolut's terms.

  • To accept payments you must be approved by the provider and accept the provider's terms of service; the provider's identity verification (KYC) and anti-money-laundering rules apply to you.
  • You warrant that the verification details you submit (business, representative and payout account information) are accurate and complete. We transmit them to the provider and do not store them.
  • Approval, suspension, freezing of payouts, chargebacks, reserves and fees are decisions of the provider under its terms. We may suspend or disable payment features where the provider or the law requires it, and we are not liable for the provider's decisions or for payout timing.
  • Payment disputes and chargebacks are between you, your client and the provider; you are responsible for resolving them and for any resulting costs.
  • Payment status shown in Kassy depends on notifications from the provider and may be delayed or occasionally require manual verification. Confirm receipt of funds independently before acting on it where the consequences are significant.

8. Third-Party Services

The Service relies on third-party providers (hosting, email delivery, sign-in, payments — listed in our Privacy Policy). Their availability is outside our control, and your use of third-party services is governed by their own terms.

9. Data Protection

Each party will comply with the data protection law applicable to it. For personal data of your clients that you enter into the Service, you are the controller and we act as your processor; section 10 (Data Processing) forms part of these Terms and constitutes the data processing agreement required by Article 28 GDPR.

10. Data Processing (DPA)

Scope. Subject matter: hosting and processing of client data to provide the Service. Duration: the life of your account. Nature and purpose: storage, structuring, display and transmission (for example sending invoices and reminders, showing payment and booking pages). Categories of data: contact details, session, billing and payment-status data, and notes. Data subjects: your clients and, where applicable, their payers and your team members. As your processor, we undertake the following:

  • we process this data only on your documented instructions — given through your use of the Service — unless EU or Member State law requires otherwise;
  • we ensure that persons authorised to process the data are bound by confidentiality;
  • we implement appropriate technical and organisational measures (encryption in transit and at rest, row-level access isolation, access controls);
  • you give general authorisation for the sub-processors listed in our Privacy Policy; we will inform you of intended changes by email or in-app notice, and if you object you may stop using the Service and delete your account;
  • taking into account the nature of the processing, we assist you with reasonable measures to respond to data subject requests and to meet your obligations under Articles 32–36 GDPR;
  • we notify you without undue delay after becoming aware of a personal data breach affecting your clients' data;
  • on deletion of your account we delete the personal data within 30 days, unless EU or Member State law requires storage;
  • we make available the information reasonably necessary to demonstrate compliance with this section and allow audits, no more than once per year, on reasonable notice and at your cost.

11. Intellectual Property

The Service, including its software, design and branding, is owned by us and our licensors; these Terms grant you no rights in it other than the right to use the Service. If you send us feedback or suggestions, we may use them without obligation to you.

12. Availability and Changes to the Service

We aim to keep the Service available and reliable, but it is provided without an uptime guarantee; maintenance, updates and factors outside our control may cause interruptions. We may improve, change or discontinue features; where a change materially reduces the Service's core functionality, we will give you reasonable advance notice.

13. Disclaimer of Warranties

To the fullest extent permitted by law, the Service is provided "as is" and "as available", without warranties of any kind, express or implied, including fitness for a particular purpose and non-infringement. We do not warrant that the Service will be uninterrupted or error-free, or that it meets requirements specific to your business.

14. Limitation of Liability

To the fullest extent permitted by law:

  • we are not liable for indirect, incidental, special or consequential damages, or for loss of profits, revenue, business, goodwill or data;
  • our total aggregate liability for all claims relating to the Service is limited to the greater of (a) the fees you paid us in the 12 months before the event giving rise to the claim and (b) €100.

Nothing in these Terms excludes or limits liability for intent or gross negligence, for death or personal injury caused by negligence, or any other liability that cannot be excluded or limited under applicable law. If you use the Service as a consumer, your mandatory statutory rights remain unaffected.

15. Indemnity

You will indemnify and hold us harmless from third-party claims (including claims by your clients or by authorities) and related costs arising from: the services you provide to your clients; the data and content you enter; the invoices and communications you issue; or your breach of these Terms or of applicable law — except to the extent a claim is caused by our own breach of these Terms.

16. Term, Suspension and Termination

These Terms apply for as long as you have an account. You may stop using the Service and delete your account at any time.

We may suspend or terminate your access — with notice where reasonably possible — if you materially breach these Terms, use the Service unlawfully, if required by law or by our payment provider, or if we discontinue the Service (in which case we will give at least 30 days' notice).

On termination your data is deleted as described in the Privacy Policy. Sections which by their nature should survive termination (including sections 10, 13, 14, 15 and 18) survive.

17. Changes to These Terms

We may update these Terms. For material changes we will give at least 14 days' notice by email or in the app before they take effect. If you do not agree with a change, stop using the Service and delete your account; continued use after the effective date constitutes acceptance.

18. Governing Law and Disputes

These Terms are governed by Bulgarian law. For business users, the competent court in Sofia, Bulgaria has exclusive jurisdiction. If you use the Service as a consumer, this does not deprive you of the protection of mandatory consumer law or of your statutory venue; consumers may also address complaints to the Bulgarian Commission for Consumer Protection (kzp.bg).

19. General

If a provision of these Terms is found invalid, the rest remains in force and the invalid provision is replaced by a valid one closest to its intent. These Terms are the entire agreement between us regarding the Service. You may not assign them without our consent; we may assign them in connection with a merger, acquisition or sale of the business. Notices to you may be given by email to your account address.

20. Contact

Questions about these Terms: support@kassy.app.