Amazon EC2 is a Infrastructure as a Service (IaaS) Providers. Amazon EC2 offers Public Cloud, Hybrid Cloud, High-Performance Computing (HPC), Virtual Networks, Virtual Machines (VMs) and many more functionalities.
No, Amazon EC2 doesn't provide API.
No, Amazon EC2 doesn't provide mobile app.
Amazon EC2 is located in Seattle, WA
Amazon EC2 offers Free Trial, Quotation Based pricing models
The starting price is not disclosed by Amazon EC2. You can visit Amazon EC2 pricing page to get the latest pricing.