if you say Yo necesito to a native speaker, they might look at you crazy, just use necesito
Guys i need an spsnish keyboar for Android platform Would sb do me a favour and send me the app
Emoji keyboard 10 Developer- wavestudio This app is small in size. And has all the spanish alphabets.
You have masculine/feminine endings for nouns and adjectives but not for verbs like necesitar. A verb changes its ending depending on who does something (I, you, another person,...). In this case it would be:
necesito - I need; necesitas - you need; necesita - he/she needs; necesitamos - we need; necesitais - you need; necesitan - they need
Necesito means “I need.” Requerir is the verb meaning to require, so your sentence won’t work, even though the meaning is almost the same.
Duolingo wants you to learn to read/write/speak the sentences using "yo" and without "yo" because either way is correct.