As of January 2016, Duolingo staff noted that for Japanese:
"The biggest challenge for us is teaching the writing system. Duolingo currently does not have a good way of teaching new character sets, but we’ll be working on that soon", Luis von Ahn (2016) [2].
As of the summer 2017, Japanese is available to English speakers on Android and Apple devices, which first teach a few characters then teach simple words employing them. The first words taught are the counting words for one to four i.e. ichi, ni, san, yon.
Duolingo Course Binder PDF[]
The entire Duolingo Japanese Course as documented by the Fandom Community will be made available soon on PDF. Allow us to complete it first!
NHK Easy - NHK, but watered down! Everyday 4 short articles are released with Furigana. You can also scroll through past daily releases (bottom right).
Bunpo for Android and iPhone (subscription-based with a small amount of free content)
Busuu.com (To learn and practice grammar and vocabulary, practice writing and have it graded by native speakers, and to live chat with Japanese speakers)
Elon.io (For learning and practicing grammar & vocabulary, kanji & kana, and for (video) chat with peers)
Lingoci Japanese tutoring via Skype (1-on-1 tutoring with experienced, native Japanese tutors. Cost is $20-$25 per hour. They offer a free trial session. Great for improving your speaking and pronunciation.)
LingoDeer for Android, iPhone, and web (subscription based, incredibly well thought out Japanese course w/ specific grammar & Kanji help)
Nihongo Master (Learn Japanese online with lessons, tools and a big community)
The Japanese-Language Proficiency Test (日本語能力試験, Nihongo Nōryoku Shiken) is Japan's official measure of a person's Japanese competency. The levels vary from N5 (lowest) to N1 (highest).
Taking the test has advantages. But up to what level can Duolingo take you, that is the question:
The graph[3] shown (which is cropped; click on image to see in full) indicates Duolingo covers only about 15% the lexis for JLPT N1. Which means an additional resource such as this Memrise Course will be required to cover for the 85% defect, which is about 2000 more words.
This reddit user points out that the N1 is "at best a high-school level understanding", and is nowhere near native-level. However, despite the N1 is not comprehensive, achieving at least that level will definitely make progress towards Japanese mastery.
This Wikipedia page gives more formal vocabulary lists for all the N-level tests, but in a less-learnable and gamified format.
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