PUBLIC OFFER
Date of publication: 07/01/2026
This Agreement constitutes a public contract in the form of an offer. Accordingly, pursuant to Article 633 of the Civil Code of Ukraine, its terms and conditions are the same for all Customers, irrespective of their legal status, including individuals, legal entities, and individual entrepreneurs. By fully agreeing to this Agreement, Users accept the terms and conditions of this Offer.
Pursuant to Articles 638 and 641 of the Civil Code of Ukraine, this Agreement constitutes a public contract. Upon accepting the terms and conditions set forth in this Offer, an individual or a legal entity becomes a Customer under the Agreement and undertakes to comply with the terms and conditions of this Agreement and its annexes, which constitute an integral part hereof. The Agreement shall be concluded by the Customer’s acceptance of the Offer in accordance with the procedure established herein.
This Offer is addressed to any person and an indefinite number of persons, hereinafter referred to as the “Customer” and constitutes a public offer by the Service Provider to enter into an agreement for the provision of access to the EstBook service, which is available on the Internet and/or as a mobile application under the name EstBook. This Offer may also be sent to the Customer’s email address. The agreement shall be concluded on the following terms and conditions:
1. DEFINITIONS AND TERMS
1.1. For the purposes of this document, the following terms shall have the meanings set forth below:
- Website Administration means LLC TARS BOOKS APPS and/or persons duly authorised by it to administer the Website and mobile application and to provide Services to Users.
- Visitor means any person who accesses the Platform via the Internet and/or a mobile device and uses the EstBook Website or mobile application.
- Website Owner means LLC TARS BOOKS APPS, which is an intermediary service provider in the information sphere within the meaning of the Law of Ukraine “On Electronic Commerce” and is not the originator of any information independently entered by the Customer into the Platform.
- Customer means a person who has accepted the terms and conditions of this Agreement and is a customer of the Service Provider’s Services under the concluded Agreement. A Customer may be a legally capable individual who has reached the age of 18, an individual entrepreneur, or a legal entity intending to receive the Service Provider’s Services in accordance with the procedure and on the terms and conditions established by this Agreement.
- Service Provider means LLC TARS BOOKS APPS and/or business entities engaged by it that are authorised to provide the Services stipulated by this Public Offer Agreement. The name of the relevant Service Provider shall be specified in the invoice or other payment documents relating to the Services.
- Services means the provision to the Customer of access to the EstBook Platform and its functionality in accordance with the selected tariff plan or another offer made by the Service Provider.
- Platform means the integrated and structured set of EstBook software modules and functions through which real estate professionals may store information about clients and real estate properties, maintain records, and schedule tasks, meetings, and their working day.
- Privacy Policy means the terms and conditions governing the handling of confidential information and personal data during the use of EstBook. The Privacy Policy constitutes an integral part of this Agreement and is made available through the Platform.
- Website means the combination of software and hardware resources and the result of computer programming in the form of the EstBook website and/or mobile application owned by the Website Owner. The Website content is protected by copyright, trademark legislation, other intellectual property rights, and unfair competition legislation.
- Offer means the Service Provider’s public proposal, addressed to an indefinite number of persons, to enter into a distance agreement with the Service Provider for the provision of the Services, hereinafter referred to as the “Agreement” on the terms and conditions published on the EstBook Platform. This Agreement applies to all Services currently available through the Platform, as well as to any future modifications thereof and any additional Services that may become available in the future.
- Acceptance of the Offer means the Customer’s full and unconditional acceptance of the terms and conditions of the Offer by paying for the Services, activating access to a personal account provided by the Service Provider, clicking a button or selecting a checkbox confirming acceptance of the Offer, and/or actually using the Platform. Visitors may not independently register on the Platform. Acceptance of the Offer constitutes the conclusion of the Agreement.
1.2. The Agreement may contain terms and definitions that are not defined in Clause 1.1. In such a case, the relevant term and/or definition shall be interpreted in accordance with the text of the Agreement. Where the text of the Offer does not provide an unambiguous interpretation of a term and/or definition, the legislation of Ukraine shall apply.
2. SUBJECT MATTER OF THE AGREEMENT
2.1. The Agreement shall be concluded between the Service Provider and the Customer of the Services in the form of an adhesion agreement.
2.2. This Agreement constitutes a public offer agreement, hereinafter referred to as the “Agreement” and shall be deemed concluded between the Service Provider and the Customer from the moment the Customer accepts all terms, conditions, and provisions of this Agreement without exception.
2.3. In accordance with the procedure and on the terms and conditions established by this Agreement, the Service Provider undertakes to provide the Services to the Customer, and the Customer undertakes to accept and pay for the Services provided, where the relevant access is subject to payment.
2.4. The list and description of the Services, available functionality, access period, and current price shall be specified on the relevant pages or in the interface of the Service Provider’s Platform, in an invoice, or in a commercial offer. The Service Provider reserves the right to update the list and price of the Services by publishing the relevant changes on the Platform.
2.5. The Customer shall accept the Agreement after reviewing its terms and conditions made available through the Platform by paying for the Services, activating access to the personal account provided by the Service Provider, clicking a button or selecting a checkbox confirming acceptance of the Offer, and/or actually using the Platform. The Customer may not independently create an account.
2.6. Pursuant to the Law of Ukraine “On Electronic Commerce,” the written form of this Agreement may additionally be evidenced by an email, invoice, access activation notice, or another electronic document.
2.7. The Service Provider does not conduct real estate agency, brokerage, valuation, legal, financial, tax, or other professional activities on behalf of the Customer and is not a party to any real estate transactions. The Platform is a software tool intended to organise the Customer’s activities.
2.8. The Platform is created and provided by the Service Provider through the Website and/or mobile application. Where software, products, or services of third-party providers are used, information concerning such providers may be specified in the description of the relevant function or Service or in the Privacy Policy.
3. RIGHTS AND OBLIGATIONS OF THE CUSTOMER
3.1. The Customer shall have the right to:
– obtain information from the Service Provider regarding the Platform, its functionality, tariff plans, and the terms and conditions governing the provision of the Services by calling the telephone number specified in this Agreement, sending a request by email, or using the feedback form;
– contact the Service Provider’s support service at info@tarsbooksapp.com in the event of any access-related issues.
3.2. The Customer shall:
– provide the Service Provider with up-to-date contact details for the purpose of sending information materials and service notifications and enabling communication between the Service Provider and the Customer in connection with the provision of access to the Platform under this Agreement;
– provide accurate information about itself and, where the Customer acts on behalf of a legal entity, possess the appropriate authority to enter into the Agreement;
– maintain in proper technical condition the equipment, software, and communication channels required to access the Platform;
– independently and promptly review the information regarding the price, functionality, duration, and terms and conditions of the Services made available through the Platform;
– ensure the lawful collection and entry into the Platform of the personal data of its clients, property owners, tenants, buyers, sellers, counterparties, and other persons and have an appropriate legal basis for processing such data.
3.3. The Customer shall be prohibited from:
– using information, software code, design elements, or functional solutions obtained from the Service Provider, including for the purpose of creating a similar and/or competing service or platform or obtaining commercial or financial benefit, without the Service Provider’s prior written consent;
– transferring and/or providing access to the Platform to any third parties beyond the limits permitted by the applicable tariff plan or obtaining access to the Platform jointly with third parties in circumvention of the established restrictions;
– disseminating inaccurate or false information, information that damages the honour, dignity, or business reputation of the Service Provider, its employees, representatives, or other persons, or information that incites or calls for hostility, violence, violations of the rights of other persons, or whose dissemination is prohibited by the applicable legislation of Ukraine or applicable rules of international law;
– uploading malicious code, obtaining unauthorised access, conducting automated mass collection of information, interfering with the operation of the Platform, or performing any other actions that may adversely affect its operation or security.
4. RIGHTS AND OBLIGATIONS OF THE SERVICE PROVIDER
4.1. The Service Provider shall have the right to:
– independently determine the forms and methods of providing access to the Platform, taking into account the requirements of the applicable legislation of Ukraine and the terms and conditions of this Agreement;
– temporarily suspend the provision of Services to the Customer for technical, technological, or other reasons that prevent the provision of the Services, for the period required to eliminate such reasons. The Service Provider shall also have the right to independently determine and modify the content, duration, quantity of functions and materials, interface, and technical capabilities of the Platform;
– refuse to provide access to the Platform or temporarily suspend or restrict the Customer’s access in the event of a material or repeated breach of this Agreement, violation of applicable legislation, provision of inaccurate information, transfer of access to third parties, infringement of intellectual property rights, unlawful processing of personal data, interference with the operation of the Platform, or identification of a reasonably substantiated risk to the security of the Platform, other Users, or third parties;
– send service notifications and, where the appropriate consent or another lawful basis exists, informational and advertising messages to the Customer’s email address and/or telephone number;
– amend the terms and conditions of the Agreement unilaterally by publishing a new version of the Agreement on the Platform. Such amendments shall not have retroactive effect with respect to any period already paid for, unless otherwise required by law or agreed with the Customer.
4.2. The Service Provider shall:
– provide access to the Platform of appropriate quality in accordance with the procedure and on the terms and conditions established by this Agreement;
– refrain from disclosing the Customer’s contact and identification details, personal account access credentials, or information entered by the Customer into the Platform, except where such disclosure is provided for by the legislation of Ukraine or the Privacy Policy or is necessary for the performance of the Agreement;
– accept for consideration the Customer’s proposals regarding improvements to the operation of the Platform and the quality of the Services;
– provide the Customer with information regarding the Platform, its functionality, tariff plans, and the terms and conditions governing their provision.
5. WARRANTIES OF THE PARTIES
5.1. The Service Provider does not warrant that the Platform will operate with absolute continuity, security, or absence of errors or that the Services will precisely meet the Customer’s subjective expectations or produce the Customer’s desired commercial result.
5.2. The Customer warrants that it does not intend to perform any actions that could damage the business reputation of the Service Provider and/or third parties having contractual relationships with the Service Provider or that would be contrary to the legislation of Ukraine, applicable international rules, or established business practices.
The Customer further warrants that its actions are directed towards the lawful receipt of the Services and do not involve malicious intent, fraudulent purposes, attempts to obtain unauthorised access, or public dissemination of information belonging to the Service Provider or third parties.
5.3. By agreeing to and accepting the terms and conditions of the Agreement, the Customer warrants that it has provided complete, accurate, and up-to-date information, including personal data, when obtaining access to the Platform, providing contact and identification details, and making payments.
The Customer further warrants that it does not use the data of other persons without an appropriate legal basis and is authorised to enter the data of its clients and counterparties into the Platform.
5.4. The Parties warrant that they possess the necessary legal capacity, capacity to act, rights, and authority to enter into the Agreement.
5.5. Access to the Platform is provided on an “as is” basis, taking into account the functionality, technical limitations, and characteristics available at the time of use.
5.6. Refunds to the Customer shall be made in the cases and in accordance with the procedure established by this Agreement and the applicable legislation of Ukraine.
5.7. For the duration of the Customer’s access, the Service Provider grants the Customer a non-exclusive, limited, and non-transferable right to use the Platform solely within the scope of its functionality, the selected tariff plan, and the terms and conditions of this Agreement.
The Customer may not transfer or sublicense such right, copy or modify the Platform software, or use it beyond the scope expressly permitted by this Agreement. The right of use may be restricted or terminated only in the cases stipulated by this Agreement or applicable legislation.
6. PAYMENT, DELIVERY, AND REFUND TERMS
6.1. Payment
– Payment for the Services shall be made by cashless payment through a bank transfer, bank card, payment system, or another payment method specified on the Platform, in the invoice, or in the payment form. Where payment is made using bank account details, the recipient of the funds shall be LLC TARS BOOKS APPS.
– The Customer shall be responsible for the accuracy of the payment information provided, the correctness of the payment reference or description, and the availability of sufficient funds to make the payment.
6.2. Delivery
– Services that do not require physical delivery shall be provided online by granting access to the EstBook Platform or other digital functionality specified in the list of Services.
– No physical delivery of materials shall be made under this Agreement unless otherwise expressly specified in the description of a particular Service. Where such a Service becomes available, the applicable delivery terms and price shall be specified separately before the order is placed.
6.3. Refunds
– A refund shall be made where the Customer withdraws from the Services before they have actually commenced or in other cases provided for by this Agreement and the applicable legislation of Ukraine. Granting access to the Platform, activating paid functionality, or commencing a paid subscription period shall be considered the commencement of the actual provision of the Services.
– To initiate a refund, the Customer shall submit an application to the Service Provider’s email address at info@tarsbooksapp.com. The application must specify the Customer’s full name or legal name, the email address associated with the account, the date, amount, and payment method, and the grounds for requesting the refund.
– Where a refund has been approved, the funds shall be returned to the same account or using the same payment method from which the original payment was made within 30 (thirty) calendar days following approval of the application, unless a different period is established by law or the rules of the relevant payment service.
7. LIABILITY OF THE PARTIES
7.1. The Customer shall be responsible for the accuracy of the information provided when placing an order, obtaining access to and using the Platform, and for the lawfulness of entering and subsequently processing information concerning its clients, real estate properties, and counterparties.
7.2. The Customer assumes responsibility for the consequences of failing to review or failing to review in a timely manner the information published by the Service Provider on the Platform or sent to the contact details provided by the Customer.
7.3. Where the Customer fails to provide the required information or provides incomplete or inaccurate information, the Service Provider shall have the right to suspend access to the Platform under the Agreement until the Customer provides the required information.
7.4. In the event of non-performance or improper performance of the obligations established by the Agreement, the Parties shall be liable in accordance with the legislation of Ukraine and the provisions of the Agreement.
7.4.1. The Service Provider’s aggregate liability in respect of any claims made by the Customer arising in connection with the provision of the Services or use of the Platform shall, in all circumstances, be limited to the amount actually paid by the Customer for the most recent paid period of use of the Platform.
7.5. The Service Provider shall not be liable for the Customer’s failure to receive the Services under this Agreement where such failure results from:
– the Customer providing inaccurate information required for the performance of the Agreement, including, without limitation, contact information such as email address, telephone number, or account details, or failing to provide updated information where previously provided information has changed;
– the inability to receive the Services for technical reasons beyond the Service Provider’s control, including the Customer’s lack of Internet access, actions of telecommunications operators or Internet service providers, the effects of computer viruses and/or other malicious software, the absence of the required software or hardware, or the Customer’s failure to properly pay for Internet access;
– the loss, damage, or disclosure of data resulting from the actions of the Customer, its employees or representatives, or persons to whom the Customer has provided access to the account.
7.6. The Service Provider shall not be liable for the proper functioning of individual segments of the Internet or for disruptions in the exchange of information resulting from a reduction in the quality of services provided by the Customer’s telecommunications providers, malfunctioning communication facilities, power outages, or interruptions in power supply networks.
The Service Provider shall also not be liable for delays, interruptions, or deterioration in the quality of the Services caused by circumstances beyond its control, including server unavailability, bandwidth or speed limitations, or the actions or omissions of administrators of servers and services that are not owned or administered by the Service Provider.
8. DISPUTE RESOLUTION PROCEDURE
8.1. The Parties shall endeavour to resolve through negotiations all disagreements and disputes that may arise in connection with the performance of this Agreement.
The Customer agrees that, for the purpose of resolving such disagreements and disputes between the Parties, correspondence conducted through the following email address shall constitute a mandatory means of communication: info@tarsbooksapp.com.
8.2. Where disagreements and disputes cannot be resolved through negotiations, they shall be resolved by a court in accordance with the applicable procedural legislation of Ukraine.
9. FORCE MAJEURE
9.1. The Parties shall be released from liability for failure to perform their obligations where such failure is caused by circumstances beyond the Parties’ control, including military action, natural disasters, industrial or other accidents, strikes, lockouts, acts of governmental or administrative authorities, large-scale interruptions in communications or power supply, cyberattacks, or other circumstances that render performance of this Agreement impossible, hereinafter referred to as “Force Majeure”
9.2. Force Majeure shall apply, and the Party affected by it shall be released from liability for a breach of this Agreement, provided that such circumstances are properly confirmed in accordance with the procedure established by the legislation of Ukraine, including by a document issued by the Ukrainian Chamber of Commerce and Industry or another competent authority, where obtaining such a document is required.
9.3. The Party affected by Force Majeure shall immediately notify the other Party and, where possible, provide documents confirming the occurrence of the relevant circumstances.
9.4. From the moment the other Party receives such notification, performance of this Agreement shall be suspended for the entire duration of the Force Majeure circumstances to the extent that such performance has become impossible.
9.5. Where Force Majeure circumstances continue for more than three months, either Party shall have the right to initiate termination of the Agreement.
10. MISCELLANEOUS PROVISIONS
10.1. The Agreement and its conclusion and performance shall be governed by the applicable legislation of Ukraine. Any matters that are not regulated or are not fully regulated by the Agreement shall be governed by the legislation of Ukraine.
10.2. Claims from Users shall be accepted at info@tarsbooksapp.com. The period for considering a Customer’s claim shall be up to 10 (ten) business days from the date of its receipt, unless another period is established by law or additional clarification of the relevant circumstances is required.
10.3. Where disputes between the Service Provider and the Customer relating to the Agreement are not resolved through negotiations between the Parties, they shall be considered by a competent court in accordance with the procedure established by the applicable legislation of Ukraine.
10.4. Where one or more provisions of the Agreement are invalid or unenforceable for any reason, such invalidity or unenforceability shall not affect the validity of any other provision of the Agreement, which shall remain in full force and effect.
10.5. Following termination of access to the Platform or termination of the Agreement, the Customer’s personal data and other information shall be processed and stored in accordance with the Privacy Policy.
Upon expiry of the periods required for compliance with applicable legislation, protection of rights and legitimate interests, and technical backup storage, such information shall be deleted or anonymised, except where its continued retention is required by law.
11. COMPANY DETAILS
ТОВ «ТАРС БУКС АПС»
LIMITED LIABILITY COMPANY TARS BOOKS APPS
LLC TARS BOOKS APPS
Ukrainian Company Registration Number: 46354953
Bank account (IBAN): UA813052990000026004025033534
Bank: JSC CB PRIVATBANK
Registered address: 8 Pechenizka Street, Kyiv, Ukraine
Telephone: +38073-41-41-695
Email: info@tarsbooksapp.com