If that's the case and you aren't viewing more properties in person than you are making spreadsheets on, you are destined for analysis paralysis.Spreadsheets can only tell you estimations based on numbers given to you online or by a real estate agent whose job is to sell the property.

To find a home inspector, you can look online via homeadvisor or thumbtack. 

Offered $20k over asking within a week of it coming online.

@Tiffany Da Silva, I use quickbooks online for bookkeeping and I use a "Profit First" approach to managing cash.

In September, I found a property I was interested in acquiring online.

Online Facebook groups can be fruitfulOnce you find a property things tend to move fast so have a good contractor available to help you estimate repairs. 

I checked online regarding Elmsure.

Quote from @Jimmy Wellman: I've looked online for some information about the average % of the final home price vs. the price you purchase the home for and found that the home should be purchased for 70% of your home's final sale price. 

In a dream world - the comprehensive solution does all this: *task management and sequencing where you can drop a property into a sequence ie day 1 call, day 2 mailer (have it automatically mail out something like a postcard) day 3 etc etc etc*project management outside of the outreach sequences for what's next in the process ie schedule inspection, send the contract, etc etc*ability to have multiple users drive around and if you see a property you can tag an address and add it into a marketing sequence, and also track the streets you've hit so you're not wasting time driving by the same houses more than once *dialer (ability to parallel dial numerous numbers simultaneously to make cold calling more efficient - Ive used tools like orum and kixie in other industries, and when you receive a pickup, the other calls are dropped) *skip tracing/data provider *website landing page for converting online visitors to leads*electronic signature/docusign*secondary branded landing site on different URL for blasts for deal disposition to your buyer listWhat am I missing? 

You can also buy a Landlord Forms package from Biggerpockets, me, or find one online and hope it's sufficient and legal.You don't need an app to manage your property.