1. If you haven’t downloaded Incredible Maths, install it here: https://play.google.com/store/apps/details?id=com.marcsoftware.incrediblemath
3. Press Free Trial on the subscription that your offer applies to (This will be in your Terms & Conditions). If you haven’t got a payment method registered with your account, you will be required to add one.
5. Click Redeem Code
Now you have redeemed the Promo Code and can start enjoying Incredible Maths Premium!
2. Launch the app, open the menu and select Premium
4. Select the option to change payment method.
6. Enter your Promo Code and click Redeem.