Keigo & Business Japanese Corrector - Japanese Grammar Checker AI - Fude icon

Keigo & Business Japanese Corrector - Japanese Grammar Checker AI - Fude

by IncreoScale · increoscale.com · Communication
Established publisherManifest V3 in_app
View in Chrome Web Store Data as of 15 Oct 2026

Keigo & business Japanese checker for non-natives in Japan. Fixes keigo & grammar mistakes in Gmail, Slack & Docs as you type.

Users
16
+1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#163K
#136K among extensions
Version
1.5.0
updated 9 Sep 2026

Users

monthly, 8 months
0816Feb 2026Jul 2026Oct 2026
Latest, 15 Oct 2026: 16 usersMove the mouse over the chart for any month

Ratings count

monthly, 8 months
001Feb 2026Jul 2026Oct 2026
Latest, 15 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Keigo & Business Japanese Corrector - Japanese Grammar Checker AI - Fude

Reporting to your manager, emailing a client, posting in the team Slack — Fude fixes your keigo mistakes before you hit send. Fude (筆) is a keigo (Japanese honorifics) and business Japanese checker for non-native speakers who work in Japanese. It runs right where you already write: Gmail, Slack, Notion, Google Docs and more. 「拝見させていただきました」「弊社がご説明なさいます」「了解しました」— mistakes that are hard to notice yourself get underlined as you type, with the reason and the correct phrasing explained in your language. ★ WHAT FUDE DOES ★ ✓ Checks for the right reader • Switch the audience between Internal (coworkers) and External (clients) and the same sentence is judged differently • 「拝見させていただきました」 in the team Slack is flagged as over-polite; 「送ります」 to a client is flagged as not polite enough • 3 keigo levels: Casual / Business / Ultra-formal ✓ Fixes keigo mistakes on the spot • Double keigo (拝見させていただく, おっしゃられる) • Mixing up respectful and humble forms (弊社がご説明なさいます) • Set phrases that are wrong at work (了解しました, ご苦労様です) • Particles, Japanese grammar and typos are checked at the same time ✓ Write plainly, convert to keigo (Pro) • Type 「明日の会議、資料を送って」, select it, right-click → a business sentence that fits your audience and keigo level ✓ Works where you already write • Gmail, Slack, Notion, Google Docs and other web editors • Text fields on any page are detected automatically ✓ Explanations in your language • English, 日本語, 中文, 한국어, Español, Português ★ WHO IS FUDE FOR? ★ • Non-native employees at Japanese companies • Anyone unsure whether the keigo in their email to a client is right • Anyone worried about sounding rude to a manager or senior coworker on Slack • Anyone who wants Japanese grammar proofreading along with their keigo ★ FREE vs PRO ★ FREE: 20 AI corrections/day PRO ($9.99/mo): 300 AI corrections/day, keigo conversion of selected text (right-click), tone & email-structure check, custom dictionary ★ PRIVACY ★ Your text is processed securely and never stored permanently. ★ SUPPORT ★ Questions? Contact us at support@increoscale.com

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days+1+6.7%00.00
6 months+13+433.3%00.00

Chrome Web Store search rankings

Where Keigo & Business Japanese Corrector - Japanese Grammar Checker AI - Fude appears when people search the store, with the 30 day change
Search phrasePosition30 days
ai grammar check#32+1
ai grammar checker#44−1
grammar check#48+3
ai grammar#62−4
grammar#64+5
grammar checker#66+1
business#68new

Version history

10 versions recorded
1.5.09 Sep 2026
1.3.510 Aug 2026
1.3.427 Jul 2026
1.3.326 Jun 2026
1.3.226 Apr 2026
1.3.124 Apr 2026
1.3.021 Apr 2026
1.1.03 Apr 2026

Details

Category
Communication
First seen
25 Feb 2026
Size
173 KB
Languages
en, es, pt-BR, zh-CN, ja, ko
Pricing
in_app
Privacy policy
increoscale.com
Extension ID
eiadiigahiaibjeilpdccghnlebfhfdn

Permissions and risk

Moderate riskimpact 2, likelihood 2
Permissions
storageactiveTabalarmscontextMenus

Alternatives to Keigo & Business Japanese Corrector - Japanese Grammar Checker AI - Fude

Extensions that rank for the same store searches or share the Communication category, ordered by users