Is an instrument needed?

I have a question... I have been following the beginner course now for about three weeks without any instrument. So I got a keyboard but it's only a 61 key.. I was wondering will this help improve my singing and/or help with my vocal practices and exercises??? 

Hi, Sebastian! Learning keyboard will certainly help your understanding of scales, keys, and music theory, which can help your intonation as a singer. You can also follow along with the pitches played on the piano (during warmups and exercises), and use a chromatic tuner like https://tuner.ninja/ (or a chromatic tuner app) to check your pitch accuracy. 

Thank you Camille! I was a bit concerned that I might not learn to sing properly without an instrument. so lately I've been reading course books on learning the keyboard/piano.. to help me follow along with the vocal exercises on here. I did download the sing sharp app that was recommended by (30day singer) idk if its the same thing as the tuner app but I will definitely check it out thank you for your response it helped a lot thank you! 

Sure thing, Sebastian! SingSharp does have a chromatic tuner built in. Good luck!