EndowUS vs Stash Away Simple?

Hi gurus, i have an excessive budget of 15k to be parked off from my DBS account (thanks to 1.1% although i can try to get one etf and that makes possible to earn 1.8% but i don't see that it helps as of now), hence i shortlisted into two accounts.

I find endow us is more interesting as the projected rate could reach 2.2% while stash away simple only up 1.9%.

Any other opinion gurus ? Kindly share.

Thank you.