The staking return with Guarda is comparable to Coinbase--somewhere around 6%. I'm calculating my return in terms of fiat. The increase in value of ether itself accounts for a percentage of the gains, and another large percentage comes from swapping ETH for GETH (Guarda's staking token) on Uniswap.

See this article for more on that:

https://medium.com/this-crypto-life/how-i-turned-1-eth-into-1-5-eth-in-one-swap-78b07634bdbc