JPDrills.com Reviews 

I like how many practice questions there are. The questions with explanations associated are especially useful.

However, there are far too many technical problems which stop you from using the product you paid for. Sometimes it product stop giving me new problems and only allow reviews. Sometimes it completely stops working for one reason or another. Right now it fails to verify that I am a customer and doesn't allow me to use the product at all.

I like the product when it works, but I am getting tired repeatedly getting denied access for one reason or another. It is an unacceptable number of technical issues that plague this product.

Update: I can confirm that my previous technical issue was solved, but it was recently replaced by a new one. I will update my review if I can experience a couple of months without service breaking issues.

I have renewed my yearly subscription for JPDrills and I think it was yet again money well spent.

They have tons of quizzes, and when I say tons, I mean 1000+ just for N5 grammar, which is mind boggling. Their grammar explanations are really useful and helpful, not at all dry like in some textbooks (I'm looking at you, Genki). And with nice tidbits of cultural references here and there.

Their customer support is amazing, and by that I mean SSS-tier amazing.

I will continue to use it in my journey to master Japanese language, since it has proven itself to be a very friendly and nice companion.

This is hands down the number one site that prepares you for jlpt the most efficiently. I love it since I can mine sentences here that are rather challenging grammar wise which helped me so much you won't believe it. Before using it I struggled hard with some grammar like ものの　ものを but after using it for a few months (like 2) I now know all the advanced stuff and can currently read rather confidently (though with dictionary) youjo senki (幼女戦記) which is rather challenging as a light novel for people who know ;).

Accesible, easy to start, good exercise with on point commentary.

Really helpful !

Really helped me to study for jlpt, strengthing my weak points with nice explanations in some questions

A small relatively unknown site for Japanese that I was happy to find. I passed the JLPT N5 in 2019, self-study a lot, use anki, memrise, rosetta stone, duolingo (spanish), jpod and admittedly, the site seemed pretty simple at first. But the "mastery" scoring buckets did it for me.

They divide your questions into different difficulty buckets and then let you practice each buckets specifically. I felt like I was improving really fast with this because you can focus on what you get wrong. It's also fun to see your score progressing to 100%. They have a couple of minor mistakes sometimes, but you can flag the question for manual review.

Lastly, they update the site with explanations frequently, payments were no problem, and account support is very friendly and helpful. No complaints so far. For the price, definitely recommend.

I've been using this site for few weeks already, mostly as grammar review / practice. It's works great for me - there is tons of questions for each grammar point. It wouldn't work in program like 'Anki' where you see same question every few days (its nice if you learn new words, but for grammar it's often about just one of few nuances or aspects).
I'm using it also for N1 vocabulary. It seems like a custom list without 'random' words. Most of them feels like "rare" but not as rare as it would to appear one time in every few books you read.
They also have great support and very fast response time on request / bug reports.

The only two things I feel lack of is missing black theme and better looking things up (it's not problem when using addons like yomichan / rikaichan - so for me it's problem only on mobile devices).

I can recomend it to anyone who want to repeat/learn grammar, prepare for jlpt. it's also good solution, if you often have to spend few minutes waitng for something but not long enough to read anything longer

There's an extreme wealth of Japanese drills and quizzes here, just as described. It's actually pretty amazing for the yearly membership in my opinion! I've had Premium for a few years now, and I haven't looked back since.

集める下さい! You should join!

This is a great and useful website. The people who run the site are incredibly professional and kind as well. I had accidentally purchased two subscriptions for varying amounts of time, and they immediately contacted me about how they noticed it and asked which one I would like to keep. They refunded me the extra subscription right away, and that really impressed me with their honesty. I probably wouldn't have noticed it myself. They've also personally sent me notifications when they've updated practice sections that I've worked on with more questions. I'm really happy with them.

Only reason I give 4 is because I know he is still working on it and If he can make better then it already is, that is a hell of a feat.