Terms of Use
By downloading or using Calculator Hub, you agree to these terms. Please read them — they're written in plain language.
Last updated: April 17, 2026Acceptance of Terms
By downloading, installing, or using Calculator Hub ("the app"), you agree to be bound by these Terms of Use. If you do not agree, please do not use the app.
These terms apply to all versions of the app, including free and PRO tiers, and any future updates.
About the App
Calculator Hub is a mobile calculator application offering 75+ calculators across finance, health, crypto, real estate, and everyday maths categories.
- Free tier includes 61+ calculators with no time limit
- PRO tier unlocks 14+ additional advanced calculators and premium features
- An AI Assistant is available for natural language calculation queries (powered by Anthropic's Claude API)
- Results are for informational and educational purposes only
Free Access & Demo Mode
Calculator Hub offers a way to try PRO features at no cost:
- 1-Day Free Demo — access to all PRO features for 24 hours, no credit card required. After 24 hours, access reverts to the free tier.
PRO Subscription
PRO access is available through auto-renewing monthly or yearly subscription plans. Prices are displayed in your local currency in the App Store or Google Play at the time of purchase.
- Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period
- Your Apple ID or Google Play account will be charged upon confirmation of purchase and at each renewal
- You can manage and cancel subscriptions through your device's app store account settings
- No refunds are provided for partial subscription periods, except where required by applicable law
Cancellation Policy
You may cancel your subscription at any time through your device's app store settings:
- iOS: Settings → [Your Name] → Subscriptions → Calculator Hub → Cancel Subscription
- Android: Google Play Store → Profile icon → Payments & subscriptions → Subscriptions → Calculator Hub → Cancel
- Your PRO access continues until the end of the current billing period
- You will not be charged again after cancellation
To cancel a free trial and avoid being charged, you must cancel at least 24 hours before the trial period ends.
AI Assistant
The app includes an AI-powered assistant for answering calculation questions. The AI Assistant is powered by Anthropic's Claude API and is subject to the following conditions:
- AI responses are generated automatically and may contain errors or inaccuracies
- Do not rely on AI responses as professional financial, legal, medical, or tax advice
- Do not submit sensitive personal information (SSN, card numbers, passwords) through the AI Assistant
- Your use of the AI Assistant is also subject to Anthropic's Consumer Terms of Service
Acceptable Use
You agree to use the app only for lawful purposes. You must not:
- Attempt to reverse engineer, decompile, or extract source code from the app
- Attempt to circumvent subscription or payment mechanisms
- Use the app to engage in any illegal activity
- Share, resell, or sublicense your PRO subscription
- Manipulate demo access timers or subscription status through technical means
Disclaimer of Warranties
The app is provided "as is" and "as available" without warranties of any kind, express or implied. We do not warrant that:
- The app will be available at all times or free of errors
- Calculation results are accurate for your specific situation
- The app will meet your specific requirements
To the maximum extent permitted by applicable law, we disclaim all warranties including merchantability, fitness for a particular purpose, and non-infringement.
Limitation of Liability
To the maximum extent permitted by law, we shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising from your use of the app, including but not limited to financial losses resulting from reliance on calculation results.
Our total liability to you for any claim shall not exceed the amount you paid for the app in the 12 months preceding the claim.
Intellectual Property
All content within Calculator Hub — including but not limited to the app design, illustrations, icons, calculator logic, and the Calculator Hub name and logo — is the intellectual property of the developer and is protected by applicable copyright and trademark laws.
You are granted a limited, non-exclusive, non-transferable licence to use the app on your personal device in accordance with these terms.
Third-Party Services
The app integrates with third-party services. Your use of those services is governed by their own terms and privacy policies:
- Apple App Store — governs all purchases and billing on iOS. Apple Terms of Service →
- Google Play Store — governs all purchases and billing on Android. Google Play Terms of Service →
- RevenueCat — manages subscription status. RevenueCat Terms →
- Firebase (Google) — provides remote configuration and analytics. Firebase Terms →
- Anthropic — provides AI capabilities for the AI Assistant. Anthropic Terms →
We are not responsible for the content, policies, or practices of these third-party services.
Changes to Terms
We reserve the right to modify these Terms of Use at any time. The "Last updated" date at the top reflects when changes were last made. Material changes will be communicated through the app. Continued use after changes constitutes acceptance of the updated terms.
Governing Law
These Terms of Use are governed by and construed in accordance with applicable law. Any disputes arising from these terms or your use of the app shall be resolved through binding arbitration or the applicable courts in your jurisdiction.
Contact
If you have questions about these Terms of Use or need support:
- Email: info@spreadsheetshub.com
- Website: spreadsheetshub.com/pages/calculator-hub
