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Quick Answers
Before sending a message, check if your question is already answered:
- Calculator not loading? Try refreshing the page or clearing your browser cache.
- Buttons not responding? Make sure JavaScript is enabled in your browser.
- Dark screen shown? Wait a few seconds — the ROM is loading.
- Want to install the app? Look for the Install banner that appears after 3 seconds.
- Need embed code? Click the "Embed on Your Site" button on the main page.
Other Ways to Reach Us
Response Time: We usually reply within 24 hours on weekdays (Mon–Fri).
For Teachers & Schools: If you want to use this calculator with your class or get a bulk embed license, mention it in your message. We'll work with you!
For Partnerships: Reach out about embed integrations, backlink exchanges, or co-marketing. We love working with education websites.
The more details you share (which browser, which device, what happened), the faster we can fix your issue!