Duolingo really does equal one semester of college learning!!
This learning platform is truly amazing! I've been using Duolingo every day as well as doing other personal studies, but Duolingo is what has taught me the majority of my skills!! I wanted to further my education by taking a French course at the university I am enrolled in. First I had to take the mandatory placement test and with Duolingo in my corner, I was able to obtain a score one point away from the intermediate level course. So amazing that an app can help me learn a second language so well that it almost surpassed an entire semester of a French course!!
Congrats on your progress.
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Other subjects available too - get the first year of college free.
I completely agree, though I'd credit Duo higher than even Duo credits Duo. While I can't say that I've learned more here YET, my comprehension and foreign language development with Duo supercedes the extent of my previous studies combined (which INCLUDES a year's worth of college courses).
My overall standards are high --- "if not perfection, then one's best" --- and I limit my praise to that which is deserving: honestly, I can't stop speaking positively of this app. It's that fantastic.
Congratulations on your learning thus far ... you're doing great!