Nimonikku has been discontinued.



A mnemonic is a device that helps you remember a piece of information more efficiently. Mostly they are humorous, physical or intriguing. You can read more about mnemonics on Wikipedia.
We support Firefox and Chrome, both on mobile and on desktop.
Nimonikku was designed to be completely usable on mobile via your web browser without having to download an extra piece of software.
Our database has around 12000 kanji records stored. From this set, an average person only needs 2136 kanji to read most of todays Japanese literature (c.f. Jōyō Kanji).
We have over 175000 words in our database where each one of them contains at least one kanji.
Yes, absolutely! We have predefined learning sets tailored for each test.
Soon you will be able to import your progress from Anki and Wanikani. Using another tool? Email us at and we will try our best to accommodate you.


Yes, we do. You can use Nimonikku the first 14 days totally for free. You do not need to provide a credit card to sign up.
Yes, you can. Any previously charged fees will not be refunded. Just contact us at
Right now, we only support major credit/debit cards like Mastercard® and Visa®.
No. Payments are processed securely by Stripe. Our servers never access or store your credit card information.

Do you have another question?

Contact us at