One thing we've paid close attention at Exponential.fi is in making sure you know where your DeFi returns are coming from: yield vs asset appreciation (net of IL/DL)

Building @ Exponential.fi — the easiest way to invest in DeFi 
DeFi investor and keen to help others grow their money 

Debank, Zerion and a bunch of others are great portfolio "watchers" but they aren't great at determining cost basis and thus returns nor yield

To solve for the basic question "how much yield have I earned?", we ended up opening positions in multiple pools and continuously simulate reward claims and LP token redemptions to track precisely the value per token and thus yield earned

I'm not saying protocols intentionally lie or misrepresent APRs but when measured on a cash-on-cash basis, defi investors should expect to earn yield at a different rate than advertised. Most times lower but in rare cases higher rates too.

Curious if anyone else has experience measuring their defi returns on their own?

In my experience, the APRs advertised by protocols are far from realistic. They usually do some version of annualized fees / TVL - crude measure. 

This ignores liquidity of the tokens, IL/DL, entry/exit fees or slippage (looking at you @curve), etc.