You study Japanese for hours. But when it's time to actually write something, nobody's watching.

ZISTICA MOJIIQ watches.

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Your coach lives where you write

Works inside any text field — Slack, Notion, Gmail, Discord, anywhere.

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Daily Japanese Practice

田中さんは毎朝コーヒーを飲む。

昨日、会議で発表した。上司に褒められた|

来週も頑張ろうと思う。

⌘⇧YCheck my Japanese
N3–N42 corrections
Beforeした。上司に褒められた
↓
Afterしました。上司に褒められました
💡文体を統一してください。丁寧体（〜ます・〜です）を使うと自然です。
思う → 思います丁寧語
＋12 XPJLPT N4
⚡Instant corrections
🧠Grammar explanations
📊Progress tracking
🔒Works offline

Works everywhere you type

If you can type in it, ZISTICA MOJIIQ coaches in it.

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How it works

1
Write in Japanese anywhere

Slack, Gmail, Notion, Discord — any text field on any site.

2
Trigger the coach

Press ⌘ Shift Y (Mac) or Alt Shift J (Windows) — or click Check my Japanese in the popup.

3
Get corrected, learn the rule

See the fix, understand why, accept or reject it. Every correction is tracked.

Everything a serious learner needs

矯

AI corrections

Grammar, particles, word choice — corrected with explanations in your level.

歴

Session history

Every mistake tracked. Review what you got wrong this week, this month.

弱

Weak spots

See which grammar categories trip you up most. Stop guessing, start targeting.

証

XP & badges

Earn XP for every correction session. Level up. Collect badges for milestones.

的

JLPT targeting

Set your JLPT goal. Get feedback calibrated to N5 through N1.

進

Progress graph

Weekly accuracy scores charted over 12 weeks. Watch yourself improve.

50,000+
corrections made
4,200+
active learners
4.9 ★
Chrome store rating
N5–N1
JLPT levels supported

What learners say

From N5 beginners to N1 candidates.

“I've been studying Japanese for 3 years and this is the first tool that actually explains *why* my particles are wrong, not just that they are.”

Sarah K.
JLPT N3

“The extension works in Gmail which is exactly where I need it — I write emails to Japanese colleagues daily. It's caught embarrassing keigo mistakes twice this week.”

Marcus T.
Business Japanese

“I set my target to N2 and the corrections are calibrated perfectly. It doesn't complain about N1-level nuance I'm not expected to know yet.”

Yuki L.
JLPT N2 prep

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Simple pricing

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Free

$0

10 corrections/day. Core corrections with JLPT-tagged rules. 7-day history. No vocab upgrades, alt patterns, drill mode, or reply coach.

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$64/yr (save 33%)

100 corrections/day. Full intelligence: vocab upgrades, alternative patterns, pattern drill mode, reply coach, 90-day history, progress graph. 7-day free trial — no card required.

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$12.99/mo

$99/yr (save 36%)

Unlimited corrections. Everything in Pro + GPT-4o model, lifetime history, custom JLPT target, priority support.

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