I already have income and expense tracking templates but everything is based on either purchase prices for comparison reasons or record keeping.

@Lan Bak.That's a pretty apt comparison. 

The combined ratio is the only way to make a fair comparison between the different types of insurance.

A 50-unit multifamily vs. 1 SFH is not an equivalent comparison.

I found out first hand that this list may contain what looks like comparison sites for the software I'm looking for. 

Make sure your not buying on the wrong side of a city/school border and are using rent comparisons that might be geographically close but are really different renter markets(like buying in East Cleveland and using Cleveland Heights rents).  

Assess the ways in which rental income might enhance your current sources of income and advance the date of your total financial freedom.Think about the possible returns on your investment in comparison to other investing approaches.Market Conditions: Look into the local and other possible investment real estate markets.

Very affordable beach market in comparison to the other areas. 

no.someone cited south korea, do you know the south korea has the most appreciation lately in comparison to advanced countries ?

Comparison is the thief of joy.