On the other hand, words and phrases such as "guaranteed", "no risk", "no brainer", "can't lose", and "you can do it from your iphone" could be quite problematic.  

Looks real interesting, but that is an iphone app.

This was typed on an iPhone 

I saw several highly rated apps on iPhone for such functions, such as docsign, adobe fill & sign.

The idea that you can manage everything with an iPhone and a few apps is silly.  

Somebody is putting that up hoping that the next microchip factory, i-phone, tesla battery, etc will come in and occupy it.  

What always worked for me was either doing things I really liked doing to make money or just scour the internet to find unique ways to make money.For instance, several years ago I used to purchase broken iPhones and then turnaround and would sell them broken to people on eBay who fixed them to resell on their own.

No iPhone and the internet wasn't really used to search.

Anyone can go to the App Store on their phone, scan their finger (or face on the newer iPhones), (or manually enter the password you created when you were 15 and made an Apple ID on your iPod Touch) and download Redfin or Zillow.

Checkout Homestyler which is a free web app for creating basic floor plan designs.https://www.homestyler.com/floorplan/I recently tried MagicPlan Iphone App, but didn't have any luck getting the app to calibrate properly for taking room measurements, so just measured with a good old fashioned measuring tape.