If you have a higher risk appetite, should you choose StashAway or Syfe?

This answer will not score well in an exam, since you asked about Syfe vs Stashaway.

Try Endowus. They curate a portfolio for you that maximises exposure to global equities.

Syfe Equity100 is great too. Stashaway I think has some holdings which are bonds or commodities.

Most of all, for someone whose "risk appetite is higher than normal", always look at the underlying holdings and the rationale for inclusion in their portfolio. On the one hand, buying a portfolio full of bonds (low volatility, lower returns) doesn't make sense for a risk-savvy investor. On the other hand, you don't want to be taking on volatility blindly, with no results to show for it.

So whichever wealth management platform you go for, make sure you understand the rationale behind their portfolio allocation, and make sure it's commensurate with your personal conviction.

I personally maxed out my risk level on Stashaway at 36% and I'm very happy with my returns so far as I continue to DCA my way into the portfolio. I like the Stashaway portfolio more for its aggressiveness as well as diversification into different geographical regions and asset classes.