Terms of Use
Effective Date: April 21, 2026
Last Updated: April 21, 2026
These Terms of Use govern your use of CalCul.
1. Acceptance of Terms
By downloading, installing, accessing, or using CalCul, you agree to be bound by these Terms of Use.
If you do not agree to these Terms, you must not use the app.
2. License Grant
Subject to your compliance with these Terms, you are granted a limited, personal, non-exclusive, non-transferable, non-sublicensable, revocable license to use CalCul on devices you own or control, solely for lawful use.
Your purchase or download of CalCul gives you a license to use the app. It does not transfer ownership of the app or any intellectual property rights.
3. One-Time Purchase
CalCul is offered as a one-time purchase.
Billing, payment processing, refunds, chargebacks, taxes, credits, and related store matters are handled by the platform or app store from which you obtained the app, such as Google Play, and are subject to that platform's own rules and policies.
4. Offline Nature of the App
CalCul is designed to operate offline. The app stores user-created content and app settings locally on your device.
You understand and agree that:
your app data may exist only on your device
the developer may not be able to recover your local data
you are responsible for your own device maintenance, backup choices, and data management
5. User Responsibilities
You are responsible for:
the accuracy of information you enter into the app
maintaining access to and security of your device
managing any backup or restore features available on your device
reviewing outputs before relying on them for financial, planning, scheduling, or other important decisions
6. Acceptable Use
You agree not to:
use the app in violation of any applicable law
interfere with or disrupt the operation of the app
bypass or attempt to bypass security or technical restrictions
misuse the app for unlawful, deceptive, abusive, or fraudulent purposes
copy, redistribute, resell, lease, sublicense, or commercially exploit the app except as permitted by applicable law or written permission
7. Intellectual Property
CalCul, including its software, code, design, text, graphics, icons, branding, structure, and related materials, is owned by Ilham Mufti, operating as StraightforwardDev, and is protected by applicable intellectual property laws.
Except to the extent expressly permitted by mandatory applicable law, you may not:
reverse engineer
decompile
disassemble
attempt to derive source code from
modify
create derivative works from
any part of CalCul without prior written permission.
All rights not expressly granted are reserved.
8. Informational Use Only
CalCul is a productivity and calculation tool. It does not provide legal, financial, tax, accounting, medical, emergency, or other professional advice.
You are solely responsible for verifying whether the app's outputs are appropriate for your intended use.
9. No Warranty
CALCUL IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS, WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE.
To the maximum extent permitted by law, the developer disclaims all warranties, including without limitation:
merchantability
fitness for a particular purpose
non-infringement
accuracy
reliability
availability
uninterrupted or error-free operation
that defects will be corrected
The developer does not warrant that CalCul will always be compatible with your device, Android version, or platform environment.
10. Limitation of Liability
To the maximum extent permitted by law, the developer shall not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, or for any loss of profits, revenue, goodwill, use, or data.
This includes, without limitation, any loss arising from:
loss of locally stored data
accidental deletion of app data
clearing app storage
uninstalling and reinstalling the app
device loss, theft, reset, damage, or destruction
hardware failure
operating system failure or corruption
failed backup or failed restore
user error
app store or platform issues
reminder failure, missed reminders, or delayed notifications
If your phone or device is lost, broken, reset, replaced, damaged, or otherwise becomes inaccessible, the developer is not liable for the loss of any locally stored app data.
To the maximum extent permitted by law, the developer's total aggregate liability for any claim relating to CalCul shall not exceed the amount you paid to obtain the app, if any.
11. Termination
These Terms remain in effect until terminated. Your rights under these Terms automatically terminate if you fail to comply with them.
Upon termination, you must stop using the app.
12. Changes to These Terms
These Terms may be updated from time to time. If updated, the Last Updated date above will be revised. Continued use of CalCul after updated Terms become available means you accept the revised Terms.
13. Severability
If any provision of these Terms is held invalid or unenforceable, the remaining provisions will remain in full force and effect.
14. Entire Agreement
These Terms constitute the entire agreement between you and the developer regarding your use of CalCul, except where superseded by mandatory platform terms or applicable law.
15. Contact
Developer / Publisher: Ilham Mufti (operating as StraightforwardDev)
Contact: dev.ilhamm13@gmail.com