Compound interest is interest that's calculated based on the initial investment amount plus
any interest that has been paid since.
The capital amount grows weekly not only through the interest on the amount you originally invested, but always on the current amount in Bitcoin that is on your Bitcoin Interest Account.
We've put together two examples for this.
If you earn 10% income per year on 1 BTC without compounding, that's a profit of 0.10 BTC.
If you earn 10% income per year on 1 BTC with weekly compounding, that's a profit of 0.10506479 BTC.