I met today a good guy, an artist D. McDade here, to whom I showed a song and explained about reverberation and noise -problems in small-room -recordings. He mentioned some tools such as German -tools, suggested them being high-quality options, and some Pro-Tools, apparently here. I currently use iPad's GarageBand, Audacity -- but problems with filtering noise. My songs miss the vocal parts and riffs, a lot of white-noise-style -things with them -- hard to fit them to other parts being of much higher -quality and clarity. My game-dev-comrade uses ZoomUH34n -microphone in development, you can apparently get very high-quality sound with it (costing some 300EUR). I am not sure what I really need here, I use iPad's microphone for recording and I like that I can do work anywhere I am so not wanting carry any big items.
Does there exist some hobbyist -tools or better filters to get out things such as noises and echos? What are the options for hobbyist audio-recording?