End-User License Agreement (EULA) for Maritime Master - CalcDeck
Last Updated: July 20, 2026
Please read this End-User License Agreement ("EULA") carefully before using the Maritime Master - CalcDeck mobile application ("the Application") operated by Maritime Master Limited, formerly known as Bottle Top Studios Ltd, a company registered in England and Wales under company number 15339200 ("Maritime Master", "us", "we", or "our").
By downloading or using the Application, you are agreeing to be bound by the terms and conditions of this Agreement. If you do not agree to the terms of this Agreement, do not download or use the Application.
1. License Grant
Maritime Master grants you a revocable, non-exclusive, non-transferable, limited license to download, install, and use the Application on devices that you own or control, solely for your personal maritime training, study, and reference purposes, strictly in accordance with the terms of this Agreement.
2. Restrictions
You agree not to, and you will not permit others to: a. License, sell, rent, lease, assign, distribute, transmit, host, outsource, disclose, or otherwise commercially exploit the Application or make the Application available to any third party. b. Modify, make derivative works of, disassemble, decrypt, reverse compile, or reverse engineer any part of the Application. c. Remove, alter, or obscure any proprietary notice (including any notice of copyright or trademark) of Maritime Master or its affiliates, partners, or licensors of the Application.
3. In-App Purchases
The Application offers an optional one-time in-app purchase ("CalcDeck Pro") that unlocks the full calculator library. It is a one-time purchase, not a subscription. All purchases are processed by Apple through your Apple Account; we do not receive or store your payment details. The price is displayed in the App Store before you confirm your purchase. Previous purchases may be restored on eligible devices using the "Restore Purchases" option. Refunds are handled by Apple in accordance with the App Store terms. Unlocked content is licensed, not sold, to you and remains subject to this Agreement.
4. Disclaimer of Warranties
The Application is provided to you "AS IS" and "AS AVAILABLE" and with all faults and defects without warranty of any kind. To the maximum extent permitted under applicable law, Maritime Master, on its own behalf and on behalf of its affiliates and its and their respective licensors and service providers, expressly disclaims all warranties, whether express, implied, statutory, or otherwise, with respect to the Application, including all implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement, and warranties that may arise out of course of dealing, course of performance, usage, or trade practice. Without limitation to the foregoing, Maritime Master provides no warranty or undertaking, and makes no representation of any kind that the Application will meet your requirements, achieve any intended results, be compatible or work with any other software, applications, systems, or services, operate without interruption, meet any performance or reliability standards, or be error-free, or that any errors or defects can or will be corrected.
5. Limitation of Liability
To the maximum extent permitted by applicable law, in no event shall Maritime Master or its suppliers be liable for any special, incidental, indirect, or consequential damages whatsoever (including, but not limited to, damages for loss of profits, for loss of data or other information, for business interruption, for personal injury, for loss of privacy arising out of or in any way related to the use of or inability to use the Application, third-party software and/or third-party hardware used with the Application, or otherwise in connection with any provision of this Agreement), even if Maritime Master or any supplier has been advised of the possibility of such damages and even if the remedy fails of its essential purpose. Nothing in this Agreement excludes or limits liability for death or personal injury caused by negligence, fraud, or any other liability that cannot be excluded or limited under applicable law.
6. Specific Disclaimers for Calculators and Information
THE APPLICATION IS A TRAINING, STUDY, AND REFERENCE AID. ITS RESULTS MUST NEVER BE USED AS THE SOLE BASIS FOR ANY NAVIGATIONAL, STABILITY, CARGO, ENGINEERING, SAFETY, COMMERCIAL, OR OTHER OPERATIONAL DECISION.
a. Calculator Results: The calculators in the Application (spanning navigation, celestial navigation, tidal, stability and cargo, weather and meteorology, engineering, safety and emergency, unit conversion, commercial and voyage, yacht and small craft, and regulations and compliance categories) apply standard formulae and simplified models. Their results depend entirely on the accuracy and completeness of the values you enter and may not account for all real-world variables, environmental factors, or vessel-specific characteristics. All results must be independently verified against approved, certified, and up-to-date instruments, official tables and publications, and the vessel's approved documentation before being used in connection with any real-world activity. If a calculated result conflicts with official sources, approved equipment, or professional judgement, the official source prevails.
b. Regulatory and Commercial Calculators: Calculators relating to regulatory schemes (such as CII, EEDI, EEXI, EU ETS, and MARPOL-related calculations) and commercial matters (such as voyage estimates, laytime, and demurrage) produce indicative figures for training and reference only. They do not constitute compliance determinations, verified emissions data, or financial, legal, or commercial advice, and they must not be submitted to, or relied upon in dealings with, any administration, verifier, charterer, or counterparty.
c. Location Access: The Application can optionally use your device's location solely to pre-fill latitude and longitude fields in navigation calculators. This happens on your device only; your location is not transmitted to us or to any third party.
d. No Professional Advice: The Application does not provide professional maritime, engineering, financial, or legal advice, and its use does not create a professional-client relationship. You are solely responsible for your actions and decisions when using the Application, including any use in a professional context, which is entirely at your own risk.
7. Acknowledgement of Purpose
You acknowledge and agree that the Application is a supplementary training, study, and reference tool. It is not certified navigational or measuring equipment, it is not type-approved by any administration, and it is not designed, intended, or certified to be relied upon in real-world maritime operations without independent verification. Any such reliance is at your own sole risk.
8. Intellectual Property
The Application, including all copyrights, patents, trademarks, trade secrets, and other intellectual property rights, is and shall remain the sole and exclusive property of Maritime Master Limited.
9. Apple App Store
You acknowledge that this Agreement is between you and Maritime Master Limited only, and not with Apple Inc. ("Apple"). Apple is not responsible for the Application or its content and has no obligation to provide any maintenance or support services for the Application. In the event of any failure of the Application to conform to an applicable warranty, you may notify Apple and Apple will refund any purchase price you paid for the Application; to the maximum extent permitted by applicable law, Apple has no other warranty obligation with respect to the Application. Apple and its subsidiaries are third-party beneficiaries of this Agreement and may enforce it against you. You represent that you are not located in a country subject to a relevant government embargo and that you are not on any applicable government list of prohibited or restricted parties.
10. Termination
This Agreement will terminate immediately, without prior notice from Maritime Master, in the event that you fail to comply with any provision of this Agreement. You may also terminate this Agreement by deleting the Application and all copies thereof from your devices. Upon termination of this Agreement, you shall cease all use of the Application and destroy all copies of the Application from your devices.
11. Governing Law
This Agreement, and any dispute or claim arising out of or in connection with it, shall be governed by and construed in accordance with the laws of England and Wales. Your use of the Application may also be subject to other local, state, national, or international laws. Nothing in this Agreement affects any mandatory consumer rights available to you under the laws of your country of residence.
12. Severability
If any provision of this Agreement is held to be unenforceable or invalid, such provision will be changed and interpreted to accomplish the objectives of such provision to the greatest extent possible under applicable law, and the remaining provisions will continue in full force and effect.
13. Changes to This Agreement
We may update this Agreement from time to time. The "Last Updated" date at the top of this page indicates when it was last revised. Your continued use of the Application after an updated Agreement takes effect constitutes your acceptance of the revised terms.
14. Entire Agreement
This Agreement constitutes the entire agreement between you and Maritime Master Limited regarding your use of the Application and supersedes all prior and contemporaneous written or oral agreements between you and Maritime Master Limited, including any agreement made with Bottle Top Studios Ltd in respect of the Application.
15. Contact Information
If you have any questions about this Agreement, please contact us via the Contact page at https://www.themaritimemaster.com/pages/contact.