User Agreement & Terms and Conditions

Last Updated: November 4, 2026

Rights holder and provider of paid features: Individual Entrepreneur Nikolai Mikhailovich Kozakov (IP Kozakov N. M.), OGRNIP 325774600585181, INN 772743126265 ("we", "us", "our").
Email: info@box-messenger.tech

1. Acceptance of Terms

By downloading, installing, or using the Box Messenger application or the website box-messenger.tech (hereinafter referred to as "BM"), you agree to be bound by these Terms and Conditions. If you do not agree to any part of these terms, please do not use BM. Your continued use of BM following the posting of any modifications to these Terms and Conditions constitutes your acceptance of those changes.

Changes to prices or to the terms of paid features do not apply to KBX already paid for, chests already opened, or a Premium period already paid for.

Sections 10–14 constitute a public offer for BM's paid services. Paying for KBX (Section 13) means full and unconditional acceptance of that offer.

2. Definitions

• Account — a BM user account registered to a verified email address.
• Device — an installation of the BM app on a specific phone with its own BM_ID identifier. Several Devices can be connected to one Account.
• BoxNet — BM's technology for delivering messages without the Internet: over Bluetooth directly between Devices, through other BM Devices, and through Box Node relays that temporarily store and forward encrypted data.
• BOX — the unit of data transfer in BoxNet. When sent through BoxNet, a message or file is split into one or more BOX; the number of BOX depends on the size of the message. BOX is a technical accounting unit and is not a separate product.
• Monthly allowance — the number of BOX that each Device can send through BoxNet free of charge during a 30-day billing period.
• KBX (Kilobox) — BM's internal settlement unit used to pay for additional BoxNet transfer and for Premium. 1 KBX equals 1,000 BOX. KBX are held on the Account balance.
• Chest — an electronic key signed by the BM server and issued to an Account for a specific Device. Opening a Chest spends 1 KBX and adds 1,000 purchased BOX to that Device. Chests let you use purchased BOX without an Internet connection.
• Premium — a 30-day subscription that raises the Monthly allowance of every Device on the Account to 10,000 BOX.
• Payment — a payment for KBX by bank card or by another method available on the acquiring bank's payment page.

3. License Grant

We grant you a limited, non-exclusive, non-transferable, and revocable license to use BM on your personal mobile device(s) running the Android or iOS operating system. This license is solely for your personal, non-commercial use. You may not distribute, sell, rent, lease, transfer, assign, or sublicense BM or any of its contents to any third party without prior written consent.

4. User Responsibilities and Conduct

You agree to use BM in compliance with all applicable laws, regulations, and these Terms and Conditions. You further agree that you will not:

• Use BM for any illegal, unauthorized, or unethical purpose
• Attempt to gain unauthorized access to BM, its systems, or associated networks
• Reverse engineer, decompile, disassemble, or attempt to derive the source code of BM
• Use BM to transmit any harmful, malicious, offensive, or defamatory content
• Engage in any form of harassment, abuse, or threatening behavior toward other users
• Violate any intellectual property rights or other proprietary rights
• Use BM to spam, phish, or distribute malware
• Modify, adapt, translate, or create derivative works of BM
• Attempt to bypass any security features or access controls, including forging, copying or reusing Chests and tampering with BOX or KBX accounting

5. Intellectual Property Rights

BM, including all its content, features, functionality, design, graphics, text, code, and underlying technology, is owned by or licensed to us and is protected by international copyright, trademark, and other intellectual property laws. All rights are reserved. You acknowledge that no title to the intellectual property in BM is transferred to you. All rights not expressly granted are reserved to us.

6. User Content and Data

If BM allows you to upload, submit, or store content (including messages, files, or other data), you retain ownership of that content. However, by uploading content, you grant us a non-exclusive, royalty-free, worldwide, perpetual license to use, reproduce, modify, distribute, and display such content for the purpose of providing BM and improving our services.

You are solely responsible for any content you create or upload. You warrant that you own or have the necessary rights to all content you provide and that such content does not violate any third-party rights or applicable laws.

As BM technology involves transferring data through other devices, you agree that your own device is used for a temporary storage of any encrypted data which passes through it. At the same time, you agree that any of the encrypted content you securely send via BM may be temporarily stored on any device with BM installed on it.

7. Data Privacy and Security

Your privacy is important to us. Our collection and use of personal information is governed by our separate Privacy Policy. By using BM, you consent to the collection and processing of information as described in our Privacy Policy.

BM may collect, store, and transmit data including but not limited to device information, usage statistics, Bluetooth connection logs, messages, and stored files. You are responsible for ensuring that any sensitive information you store on your device is adequately protected. We are not liable for unauthorized access to your data due to security vulnerabilities on your device or network.

8. Permissions and Device Access

BM may require certain permissions to function properly, including but not limited to:

• Bluetooth communication
• File system access
• Notification permissions
• Location services (only where the operating system requires them for Bluetooth scanning)

You grant BM permission to access these features as needed for its intended functionality. You may revoke these permissions at any time through your device's settings, though this may prevent certain features from functioning properly.

9. Bluetooth and Wireless Connectivity

• You are responsible for ensuring that your devices are compatible and properly paired
• We are not liable for connection failures, data loss, or interruptions in service due to wireless connectivity issues
• Bluetooth communication may be subject to interference from other devices and environmental factors
• Data transmitted over Bluetooth should be considered inherently less secure than other transmission methods
• You acknowledge the security limitations of wireless communication protocols

10. BOX and KBX

10.1. What is free. Messaging over the Internet is unlimited and does not use BOX. Receiving messages and relaying other users' encrypted BOX through your Device are also free and do not reduce your allowance.

10.2. What uses BOX. BOX are spent only when your own message is passed to BoxNet. If a message can be delivered over the Internet, no BOX are charged. Each unique BOX is counted once: repeated transmission attempts of the same BOX are not charged again.

10.3. Monthly allowance. Each Device receives 1,000 free BOX per 30-day billing period. Any unused part of the allowance does not carry over to the next period. The Monthly allowance is used first, then purchased BOX.

10.4. Purchased BOX appear on a Device when a Chest is opened (Section 11), do not expire at the end of a billing period, and can be used only on that Device. Purchased BOX are kept in the app's data: if you delete the app or clear its data, unused purchased BOX may be lost.

10.5. Legal nature of KBX. KBX are BM's internal settlement unit for paying for the services described in these Terms. KBX are not money, electronic money, securities or digital currency, and no interest accrues on them. KBX cannot be transferred to another Account or exchanged for money except by refund under Section 14. KBX do not expire while the Account exists.

10.6. Balance. KBX are available only to registered users and are held on a single Account balance shared by all Devices of the Account. Every credit and debit is shown in the Account's transaction history.

10.7. Negative balance. The balance can become negative if several Devices open Chests offline before syncing, or if the bank reverses a Payment after its KBX have been spent. The debt is covered from the next top-up; until it is covered, new Chests are not issued and Premium is not renewed.

11. Chests

11.1. A registered user can download up to 10 unopened Chests to a Device, but no more than the current KBX balance. Each Chest is bound to the Account and to a specific Device and cannot be used on another Device or Account.

11.2. Downloading a Chest neither debits nor reserves KBX. KBX is debited only when a Chest is opened.

11.3. A Chest is valid for 30 days from issuance. An unopened Chest that has expired is cancelled without any KBX debit; the app can download a new one.

11.4. A Chest can be opened offline: 1,000 purchased BOX appear on the Device immediately, and the 1 KBX debit is recorded on the server at the next synchronization. Opening a Chest is final: once opened, the 1 KBX is considered spent.

11.5. If a Device is lost or the app is deleted, unopened Chests on it do not cause any KBX debit.

12. Premium

12.1. Premium costs 10 KBX for 30 days and is debited from the Account balance. While Premium is active, the Monthly allowance of every Device on the Account is 10,000 BOX.

12.2. Activating Premium requires an Internet connection and a balance of at least 10 KBX. Chests are not used to pay for Premium.

12.3. Premium auto-renewal debits 10 KBX from the Account balance at the start of each next period; nothing is charged to your bank card automatically. You can turn auto-renewal off at any time — Premium stays active until the end of the paid period.

12.4. If the balance is below 10 KBX at renewal time, or auto-renewal is off, Premium ends and the Monthly allowance returns to 1,000 BOX from the next billing period.

13. Payment

13.1. KBX are purchased in the Account area on box-messenger.tech, or in the app where payment is available there. Payment requires an Account with a verified email address, to which the fiscal receipt is sent.

13.2. As of this version, the price is 10 RUB per 1 KBX. One Payment can buy from 10 to 1,000 KBX. Volume discounts: 2% from 100 KBX, 5% from 300 KBX, 7% from 500 KBX. The total is calculated by the BM server and shown before payment; exactly that amount is charged. The current price is always shown on the payment page.

13.3. Payments are accepted through the internet acquiring service of our partner bank (JSC "TBank") on its secure payment page. Card details are entered on the bank's side; BM never receives or stores your card number or CVC.

13.4. KBX are credited to the balance after the bank confirms the charge, usually within a few minutes. If money has been charged but KBX have not been credited within 24 hours, write to info@box-messenger.tech and include the order number from the receipt or from the transaction history.

13.5. A Payment that fails, is declined, or is cancelled by the bank does not credit KBX. If the amount was held on your card, the bank releases it under its own rules.

14. Refunds

14.1. What can be refunded. You may at any time withdraw from unused KBX and get your money back for them. Unused KBX are KBX that remain on the Account balance and have not been spent on opened Chests or Premium.

14.2. What is not refunded. KBX spent on opened Chests (including purchased BOX not yet used on a Device) and on a Premium period that has already started are not refunded. The free Monthly allowance has no monetary value.

14.3. Our errors. If a paid service is not provided through our fault — for example, a duplicate charge, KBX not credited, or a server failure — we will, at your choice, refund the money in full or re-credit the KBX, regardless of 14.1–14.2.

14.4. How to request a refund. Email info@box-messenger.tech from the address registered on your Account with the subject "KBX refund". Include the order number and the number of KBX to refund, or write "all unused KBX". We will review the request within 10 days and reply to the same address.

14.5. Refund amount. The amount is calculated at the price actually paid per 1 KBX in the relevant Payment, including any discount. If KBX were bought in several Payments, unused KBX are attributed to the most recent Payments first. Example: 150 KBX were bought for 1,500 RUB and 50 KBX were spent — 1,000 RUB is refunded for 100 KBX.

14.6. Where the money goes. Money is returned to the same payment method used for the Payment, through the acquiring bank. Once the request is approved, the time to receive the funds depends on your card's issuing bank and is usually up to 10 business days. A fiscal receipt is issued for the refund.

14.7. What happens to the balance. On refund, the corresponding KBX are debited from the balance, and unopened Chests exceeding the new balance are cancelled at the next synchronization. Every operation is shown in the history.

14.8. Bank disputes. If you dispute a Payment with your card's issuing bank and the money is returned by the bank's decision, the corresponding KBX are debited even if the balance becomes negative (10.7).

14.9. Account deletion and discontinuation of BM. Deleting your Account does not remove your right to a refund of unused KBX; we recommend requesting it before deletion. If we discontinue BM or its paid features, we will refund all unused KBX.

14.10. This section does not limit any consumer rights under applicable law, including the Russian Federation Law "On Protection of Consumer Rights".

15. Warranty Disclaimer

TO THE EXTENT PERMITTED BY LAW, BM IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT ANY WARRANTIES, EXPRESS OR IMPLIED. WE EXPRESSLY DISCLAIM ALL WARRANTIES INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

We do not warrant that:

• BM will meet your requirements
• BM will be uninterrupted, timely, secure, or error-free
• Any defects or errors in BM will be corrected
• BM will be compatible with all devices or operating system versions
• BM will perform at any particular speed or quality level
• A message passed to BoxNet will be delivered: delivery depends on nearby Devices and Box Node relays. BOX spent on BoxNet transfer are not restored if a message is not delivered for reasons beyond our control

16. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL WE BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, PUNITIVE, OR EXEMPLARY DAMAGES ARISING OUT OF OR IN CONNECTION WITH YOUR USE OF BM, INCLUDING BUT NOT LIMITED TO DAMAGES FOR LOSS OF PROFITS, GOODWILL, USE, DATA, OR OTHER INTANGIBLE LOSSES, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

OUR TOTAL LIABILITY TO YOU FOR ANY CLAIM SHALL NOT EXCEED THE AMOUNT YOU PAID US FOR KBX DURING THE 12 MONTHS BEFORE THE CLAIM, OR, IF YOU HAVE NOT PAID US, ONE DOLLAR ($1.00).

These limitations do not apply to our obligation to refund money under Section 14 and do not limit consumer rights that cannot be limited by law. Some jurisdictions do not allow the exclusion of certain warranties or the limitation of liability for certain damages, so some of the above disclaimers may not apply to you.

17. Indemnification

You agree to indemnify, defend, and hold harmless us and our officers, directors, employees, agents, and successors from and against any third-party claims, damages, losses, costs, and expenses (including reasonable attorneys' fees) arising out of or relating to:

• Your use of BM
• Your violation of these Terms and Conditions
• Your violation of any applicable law or regulation
• Your infringement of any third-party rights
• Any content you provide or transmit through BM

18. Third-Party Services and Links

BM may contain links to third-party websites, services, or content. We do not endorse, control, or assume responsibility for any third-party services, websites, or their content. Your use of third-party services, including the acquiring bank's payment page, is governed by their respective terms and conditions. We are not liable for any damages or losses arising from your use of third-party services.

19. Termination

We may suspend or terminate your access to BM, including but not limited to in case of:

• Violation of these Terms and Conditions
• Illegal or harmful use of BM
• Threat to the security or integrity of BM or other users
• Discontinuation of BM or service
• Technical or administrative reasons

Upon termination, your license to use BM immediately ceases, and you must cease all use of BM and delete it from your device. Unused KBX are refunded under Section 14.

20. Updates and Modifications

We may modify, update, or discontinue BM or these Terms and Conditions at any time. We will endeavor to notify you of significant changes, but your continued use of BM following any modifications constitutes acceptance of the revised Terms and Conditions. Price changes do not apply to KBX already paid for.

21. Governing Law and Jurisdiction

These Terms and Conditions are governed by and construed in accordance with the laws of Russian Federation, without regard to its conflict of law principles. You agree to submit to the jurisdiction of the courts located in Russian Federation for any disputes arising from these Terms and Conditions or your use of BM, without prejudice to any mandatory consumer rights to bring a claim elsewhere.

22. Dispute Resolution

Before pursuing legal action, you agree to attempt to resolve any dispute informally by contacting us at info@box-messenger.tech. Payment and refund claims are reviewed within 10 days. If the dispute cannot be resolved informally within thirty (30) days, it shall be resolved in accordance with Section 21.

23. Severability

If any provision of these Terms and Conditions is found to be invalid, illegal, or unenforceable by a court of competent jurisdiction, that provision shall be modified to the minimum extent necessary to make it enforceable, or if such modification is not possible, that provision shall be severed. All other provisions shall remain in full force and effect.

24. Entire Agreement

These Terms and Conditions, together with our Privacy Policy and any other policies we publish, constitute the entire agreement between you and us regarding your use of BM and supersede all prior agreements, understandings, negotiations, and discussions, whether written or oral.

25. No Waiver

Our failure to enforce any provision of these Terms and Conditions does not constitute a waiver of that provision or the right to enforce it at a later time. No waiver of any provision will be effective unless in writing and signed by an authorized representative of us.

26. Contact Information

If you have any questions, concerns, or complaints regarding these Terms and Conditions, payments, refunds or BM, please contact us at:

Provider: IP Kozakov Nikolai Mikhailovich, OGRNIP 325774600585181, INN 772743126265
Website: box-messenger.tech
Email: info@box-messenger.tech

27. Accessibility and Compliance

We are committed to ensuring that BM is accessible to all users. If you experience any accessibility issues or have suggestions for improvement, please contact us using the information provided above.

Acknowledgment

By clicking "I Agree," at the acceptance button, or continuing to use BM, you acknowledge that you have read, understood, and agree to be bound by these Terms and Conditions and our Privacy Policy. If you do not agree, you must uninstall BM and cease using it immediately.