These terms and conditions apply to the MathHub app for mobile devices (a voice-enabled calculator application), together with any related services operated by Hussain (collectively, the "Application"). Hussain is hereby referred to as the "Service Provider".
By downloading or using the Application, you agree to these Terms and Conditions. You should read them carefully before using the Application.
Subject to your compliance with these Terms, the Service Provider grants you a limited, non-exclusive, non-transferable, revocable license to install and use the Application on a mobile device for personal, non-commercial purposes. You may not reproduce, distribute, modify, create derivative works from, reverse engineer, decompile, or disassemble the Application, except as and only to the extent that such activity is expressly permitted by applicable law.
The Service Provider retains all intellectual property rights in the Application, including its code, design, trademarks, service marks, trade names, logos, and branding (the "IP"). Nothing in these Terms grants you any license or right to use the Service Provider's trademarks, logos, or branding for any purpose. You agree not to remove, alter, or obscure any copyright, trademark, or other proprietary notices displayed in or on the Application.
The Application is a general-purpose calculator intended for use by individuals of any age, including students using it for schoolwork, and does not impose a minimum age requirement to access its core calculator functionality. However, the Application offers in-app purchases through your device's app store account and displays third-party advertising. If you are under the age of digital consent in your jurisdiction, a parent or legal guardian should supervise your use of in-app purchases and review these Terms and the Privacy Policy on your behalf. Parents and guardians are responsible for any purchases made using their device or app store account.
The Service Provider may suspend your access to the Application if you materially breach these Terms. The Service Provider will provide you with written notice of the breach and, where the breach is capable of cure, you will have 14 days from receipt of notice to remedy the breach. If you fail to cure the breach within that period, the Service Provider may terminate your access.
The Service Provider may suspend or terminate your access immediately without notice if you violate applicable law, infringe intellectual property rights, or engage in activity that could cause harm to other users or the Service Provider.
Upon termination, your right to use the Application will end and you must delete all copies from your devices.
Unauthorized copying or modification of the Application, any part of the Application, or the Service Provider's trademarks is strictly prohibited. Any attempts to extract the source code of the Application, translate the Application into other languages, or create derivative versions are not permitted. All trademarks, copyrights, database rights, and other intellectual property rights related to the Application remain the property of the Service Provider.
The Application offers optional in-app purchases, processed through Google Play Billing and managed using RevenueCat. All payments are handled by Google Play; the Service Provider does not receive or store your payment card details. Purchases are subject to Google Play's own payment terms, refund policy, and purchase management tools, available through your Google Play account settings. The Service Provider does not directly process refunds — refund requests should be made through Google Play. Prices for in-app purchases are displayed within the Application prior to purchase and may vary by region.
The Application displays third-party advertisements served through Google AdMob. The Service Provider does not control the content of individual ads shown by AdMob and is not responsible for the content, accuracy, or practices of advertisers or the websites/apps their ads may link to. Your interactions with advertisements are governed by the advertiser's own terms, and your ad experience (including personalization) is governed by Google's advertising policies, described in the Privacy Policy.
The Application may send you notifications for tips, updates, reminders, and product news. Notifications are delivered either through the device's local notification system or through a third-party push notification service (such as Firebase Cloud Messaging), depending on the Application's configuration. You can enable or disable notifications at any time through your device's system settings. Notifications are optional and are not required for the Application's core calculator functionality.
The Application allows you to export your locally stored calculation history as a CSV file and share it, at your own discretion, to other applications installed on your device (such as email, spreadsheet, or file-management apps) using your device's standard share functionality. Once you export or share this data, it is no longer under the Service Provider's control, and the Service Provider is not responsible for how the receiving application or service handles, stores, or further shares that data. You are responsible for choosing where you export or share your data.
By accessing and using this Application, you represent that you are legally permitted to use it in your jurisdiction.
The Service Provider is dedicated to ensuring that the Application is as beneficial and efficient as possible. As such, they reserve the right to modify the Application or charge for their services at any time and for any reason. The Service Provider assures you that any charges for the Application or its services will be clearly communicated to you.
It is your responsibility to maintain the security of your mobile device and access to the Application.
The Service Provider strongly advises against jailbreaking or rooting your mobile device, which involves removing software restrictions and limitations imposed by the official operating system of your mobile device. Such actions could expose your mobile device to malware, viruses, or malicious programs, compromise your mobile device's security features, and may result in the Application not functioning correctly or at all.
Third Party Services
Some functions of the Application, including voice input, notifications, and advertising, require an active internet connection, which can be Wi-Fi or provided by your mobile network provider. The Service Provider cannot be held responsible if the Application does not function at full capacity due to lack of internet access. Core calculator functionality (keypad entry and calculation) works fully offline.
If you are using the Application outside of a Wi-Fi area, your mobile network provider's agreement terms still apply. You may incur data charges from your mobile provider, including while using voice input, receiving notifications, or viewing ads. By using the Application, you accept responsibility for any such charges, including roaming charges if you use the Application outside of your home territory without disabling data roaming. If you are not the bill payer for the device on which you are using the Application, the Service Provider assumes you have obtained permission from the bill payer.
It is your responsibility to ensure that your device remains charged and has sufficient storage. If your device runs out of battery or storage, the Service Provider cannot be held responsible for any resulting inability to access the Application.
Nothing in these Terms shall limit any rights you have under applicable consumer protection laws that cannot be lawfully excluded.
To the fullest extent permitted by law, the Service Provider shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including but not limited to lost profits, data loss, or business interruption, even if advised of the possibility of such damages. This includes, without limitation, reliance on calculation results produced by the Application — while the Service Provider aims for accuracy, you are responsible for independently verifying calculations used for critical, financial, or safety-related purposes.
However, the Service Provider retains full liability for:
To the fullest extent permitted by law, the total liability of the Service Provider for any claim shall not exceed the amount paid by you to the Service Provider for in-app purchases in the 12 months preceding the claim, or the minimum amount that must be paid under applicable law, whichever is greater. If you have made no in-app purchases, the Service Provider's liability is limited to the minimum amount permitted by applicable law.
The Service Provider accepts no liability for any loss, direct or indirect, that you experience as a result of relying entirely on third-party content, including advertisements, displayed through this Application.
To the fullest extent permitted by law, you agree to indemnify and hold harmless the Service Provider, its affiliates, officers, directors, employees and agents from and against any claims, liabilities, damages, losses and expenses, including reasonable legal fees, arising out of or directly related to your breach of these Terms or your intentional misuse of the Application.
This indemnification does not apply to claims arising from the Service Provider's own negligence, breach of these Terms, or violation of applicable law. In jurisdictions where consumer indemnification is restricted by law, this clause shall be limited to the maximum extent permitted.
The Application uses your device's built-in speech-recognition service (Google on Android, Apple on iOS) to convert spoken voice input into text for calculations. By using the voice input feature, you acknowledge that your audio is processed by that operating-system service as described in the Privacy Policy. The Service Provider does not operate its own AI or voice-processing infrastructure.
The Service Provider may wish to update the Application at some point. The Application is currently available as per the requirements for the operating system (and any additional systems the Service Provider decides to extend availability to), which may change, and you will need to download updates if you want to continue using the Application. The Service Provider does not guarantee that it will always update the Application so that it is relevant to you and/or compatible with the particular operating system version installed on your device. You should accept updates when offered; if you choose not to, the Service Provider may cease to support earlier versions and the Application may not function properly. The Service Provider may also cease providing the Application and may terminate its use at any time without providing termination notice to you. Unless the Service Provider informs you otherwise, upon any termination, (a) the rights and licenses granted to you in these Terms will end; (b) you must cease using the Application, and (if necessary) delete it from your device.
These Terms and Conditions are governed by the laws of the jurisdiction in which the Service Provider is established, excluding conflict of law rules, except to the extent mandatory consumer protection laws provide otherwise.
Any dispute arising out of or relating to these Terms will be brought before the courts that have jurisdiction under applicable law. Nothing in this clause limits any rights you may have to bring a claim in a court that is competent under mandatory law.
If any provision of these Terms and Conditions is held to be invalid, illegal, or unenforceable by a court of competent jurisdiction, such provision shall be modified to the minimum extent necessary to make it valid and enforceable, and the remaining provisions of these Terms shall remain in full force and effect.
These Terms and Conditions, together with the Privacy Policy, constitute the entire agreement between you and the Service Provider concerning your use of the Application, superseding any prior agreements or understandings.
The Service Provider may periodically update these Terms and Conditions. You are advised to review this page regularly for any changes. The Service Provider will notify you of any changes by posting the new Terms and Conditions on this page.
Previous versions of these Terms and Conditions will be made available upon request by contacting the Service Provider at hussainxdeveloper@gmail.com.
These terms and conditions are effective as of 2026-09-17
If you have any questions or suggestions about these Terms and Conditions, please contact the Service Provider at hussainxdeveloper@gmail.com.