API for Cloud Accounting/ Social Media / Client Management Features

API for Cloud Accounting/ Social Media / Client Management Features Only apply if you are a API Guru. I need a analysis report completed for recommendations of suitable API, and then to go ahead and build it for me. I need someone to create me a website with accounting/ social media and client management API. I want to charge the user a monthly fee for under $40 per month. Horse Trainer Heavy Account The software is to include the following features: · Dashboard – Summary of business accounts · Bank Accounts – Provide balances, transactions and statement of linked bank accounts, LIVE BANK FEEDS · Invoices – Able to create invoices and track any overdue invoices · Expenses – Tracks any outstanding bills of purchase orders · Horse – Each horse will have their own account/profile and will be split into two functions: o FB style profile page for the horse, where the horse trainer can upload video, status, photos, calendar invites. o Expenses. The horse trainer will assign monthly expenses to the horse. The total month expense is to then to be divided by the amount of owners (for example for 1 horse there maybe 4 owners, who own 25% each of the horse), this then needs to be put on an invoice. · Payroll - Ability to pay employees and deduct taxes with the latest up to date tax tables · Reporting – run various financial reports on the company · Internal messaging – Able to send message/emails to the horse owner Horse Trainer Light Account The software is to include the following features: · Dashboard – Summary of invoices · Invoices – Able to create invoices and track any overdue invoices · Horse – Each horse will have their own account/profile and will be split into two functions: o FB style profile page for the horse, where the horse trainer can upload video, status, photos, calendar invites. o Expenses. The horse trainer will assign monthly expenses to the horse. The total month expense is to then to be divided by the amount of owners (for example for 1 horse there maybe 4 owners, who own 25% each of the horse), this then needs to be put on an invoice. · Internal messaging – Able to send message/emails to the horse owner Horse Owner Account · Dashboard – Summary of overdue/paid invoices, and horses profile · Horse – Summary of horses owned · Internal messaging – Able to send message/emails to the horse owner Please don't suggest Xero or MYOB as they charge around $40 per month for a user.