Support

How many elements are in the quiz?

All 118 confirmed elements, from Hydrogen (1) to Oganesson (118).

How do I restore my purchases?

Go to Settings in the app and tap "Restore Purchases". This will restore any previous purchases made with your Apple ID or Google account.

What is Reverse Mode?

Reverse Mode flips the quiz — instead of seeing a chemical symbol and naming the element, you see the element name and pick the correct symbol from four choices.

What is the Daily Challenge?

Every day a new element is featured. Answer correctly to keep your streak alive!

How do I reset my progress?

Go to Settings and select "Reset Progress".

App crashes or freezes:

• Make sure you have the latest version installed
• Try restarting the app
• Restart your device
• Reinstall the app (note: local progress may be lost)

We love hearing from chemistry enthusiasts! If you have suggestions for new quiz modes, categories, or features, please email us. All feedback is carefully considered.

Found a bug? Please help us fix it by sending an email with:

• Your device model and OS version
• App version (found in Settings)
• Steps to reproduce the issue
• Screenshots if applicable