Quote from https://www.hex-rays.com/products/ida/IDA is a debugger.
Woops thought I remembered it saying that it was a decompilerQuote from https://www.hex-rays.com/products/ida/
IDA is a Windows, Linux or Mac OS X hosted multi-processor disassembler and debugger [..]
So it isn't only debugger, it's also a disassembler.