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Castor - Gemini UI Enhancer

Chrome extension by Ry · Productivity · Tools

A Chrome extension in Productivity · Tools with 20 users, barely installed.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 1 screenshot

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
20
Rating
not rated yet
Users, last 15 days
+1
Version
1.0.0
Updated in the store
2026-02-09
Published
2026-02-09
Manifest
V3
Browser access
1 permission

How it has moved

Users
+1 since 01.09
18-20 · 7 readings
  1. 2026-09-0119
  2. 2026-09-0320
  3. 2026-09-0418
  4. 2026-09-0719
  5. 2026-09-0820
  6. 2026-09-0919
  7. 2026-09-1520
Users
+1 since 01.09
18-20 · 7 readings
  1. 2026-09-0119
  2. 2026-09-0320
  3. 2026-09-0418
  4. 2026-09-0719
  5. 2026-09-0820
  6. 2026-09-0919
  7. 2026-09-1520

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Ry publishes 7 listings we track, 121 users between them.

  1. BoxNote DL Ry · Productivity · Tools · published 2026-05-23 55 users
  2. Slack Markdown Renderer Ry · Productivity · Tools · published 2025-12-26 20 users
  3. Kao-Saver (Kaonavi JSON Tool) Ry · Productivity · Tools · published 2025-11-29 11 users
Show 3 more from this publisher
  1. Console View Refresh Master Ry · Productivity · Tools · published 2025-02-22 6 users ★ 4.0
  2. Redirect & Scheme Switcher Ry · Productivity · Tools · published 2025-08-15 5 users ★ 5.0
  3. tab-cliper Ry · Productivity · Tools · published 2026-01-24 4 users

Like this one

Listings the catalog judges closest in what they say they do.

  1. Gemini Tools Describes nearly the same job, smaller audience 93 users ★ 5.0
  2. Gemini Extensions Describes nearly the same job, smaller audience 11 users
  3. UI Enhancer for Gemini Describes nearly the same job, smaller audience 597 users ★ 4.6
  4. UI Refined for Gemini Describes nearly the same job, smaller audience 177 users ★ 5.0
  5. Better Gemini Describes nearly the same job, smaller audience 852 users ★ 4.6

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.