Happy to answer any specific questions about both apps.

Tried out this app called Remini that produces AI generated headshots as well as enhancing someones existing photos.

RV parks, mobile home parks, house hack rentals and such are the way we are headed.  

If you believe she is honest, hard working and her style of communicating fits you- she needs an app to help her with paperwork I suggest yardi or doorloop/ get a contract in writing that you negotiate with every nitty gritty duty- for example: who keeps copies of keys, how often are inspections done and how is the data provided to you, what dollar amount she can front money for repairs, when to call you...

Mobile homes are like baby chick eggs... easy to damage but also easy to repair. 

Any advice on free apps/websites? 

Calculators, apps etc are neat but I wouldn't trust them completely.

Also are there any apps or software recommended for self-managing?

You could try selling it yourself and offer 3-4% to the buyer agent to see what you are paying for on the selling s300 is sky high for a notary fee unless its a mobile notary.. and even if it mobile that is about 50% higher than I

That being said my tenants rebelled when I tried to use a management software and overwhelmingly said they didn’t trust an App they didn’t know and wouldn’t use it.