Growth signalNo paid features detectedLow-risk permissions

NicoFlow - YouTubeコメントをニコニコ風に流す

YouTubeの時間指定コメントやチャットリプレイをニコニコ動画風に画面上に流します。ライブ配信・プレミア公開のリアルタイムチャットにも対応。スパチャやメンバーの色分け表示にも対応。

Users158Current public install base

Rating4.7Store average score

Reviews3Public review volume

Manifest versionV3Extension platform version

7-day growth+14Net users gained this week

7-day growth rate+9.72%Relative weekly velocity

Preview

NicoFlow - YouTubeコメントをニコニコ風に流す Media preview

2 assets

Trend

User growth trend

Review user movement across collected snapshots.

User Growth Over Time

Rating trend

30-day rating change

Track rating movement over time to see whether quality signals remain stable.

30-day rating change

Start

4.67

Latest

4.67

30-day rating change

0.00

2026年7月6日2026年7月12日

Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthGrowing

+2+1.28%

7-day growthGrowing

+14+9.72%

30-day growthGrowing

+61+62.9%

Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version1.1.0

ManifestV3

Size53.91KiB

Languages1日本語

Published--

Store updated--

Last crawled--

Overview

Product summary

Review the store description, core capabilities, and common use cases.

NicoFlowは、YouTubeの動画にニコニコ動画風のコメントを流す拡張機能です

。

【主な機能】

・時間指定コメント（タイムスタンプ付きコメント）を動画上にニコニコ風

に流します

・ライブ配信・プレミア公開のリアルタイムチャットに対応

Reviews

Recent review snapshot

Inspect the latest comments and rating distribution.

Store average score4.7Chrome Web Store aggregate rating, including ratings without synced review text

Synced text average5.0Average computed only from synced review bodies below

Reviews with text2Synced review bodies

Total ratings / reviews3Chrome Web Store public rating/review count

Store average score: 4.7. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5★

4★

3★

2★

1★

みー2026年4月9日

時間指定されているコメントが流れてきて、コメント欄を見なくても動画内で確認できるのが便利です！

ぎょうざコアラ（gyo_z）2026年4月9日

いろいろ試してこれが一番良かった。あわよくば文字色のバリエーションとか文字サイズや速度の調整とかあったら嬉しい。

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AI product read

Display YouTube comments and live chat in a Niconico-style scrolling overlay on video playback

YouTube lacks the danmaku (scrolling comment) feature popular in Japanese Niconico Douga videos. This extension brings that experience to YouTube by overlaying time-stamped comments and live chat messages across the video player.

1. User installs extension and opens a YouTube video page. 2. Extension automatically activates and displays a control bar below the video. 3. Comments are fetched from YouTube's internal APIs and parsed for timestamps or live chat messages. 4. Comments scroll across the video player in Niconico style. 5. User can toggle ON/OFF, switch between comment/chat modes, and adjust settings (speed, size, opacity, colors) via the control bar.

Target users: Japanese YouTube users familiar with Niconico Douga's danmaku culture / Viewers who want to see time-stamped comments overlaid on videos / Live stream viewers who want real-time chat displayed on screen / Users who enjoy interactive commenting experiences similar to Niconico

The extension is quite large (183KB content.js) and only sampled portions were reviewed. However, grep searches for login/payment keywords returned no results, providing strong negative evidence.
Cannot verify if the extension vendor offers paid tiers outside the extension itself (e.g., a separate website), but no such integration was found in the source code.
YouTube's internal APIs used by this extension are unofficial and could change, potentially breaking functionality, but this doesn't affect the login/payment analysis.

Monetization

No paid features detected

No paid features detected in the extension. The extension uses only YouTube's internal APIs (youtubei/v1/live_chat, youtubei/v1/next) which are part of YouTube's own infrastructure, not third-party payment platforms. There are no references to Stripe, PayPal, subscription management, license keys, upgrade prompts, or any billing logic. The keyword 'purchase' found in content.js refers to YouTube Super Chat purchase amounts (renderer.purchaseAmountText), which is data extracted from YouTube's page to display Super Chat comments with their amounts - this is not the extension selling anything. The extension appears to be completely free with all features available.

Confidence: 95
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension does not implement any login mechanism. It uses chrome.storage.local for user preferences (font scale, speed, opacity, etc.) and interacts directly with YouTube's public pages and internal APIs (youtubei/v1/live_chat, youtubei/v1/next) without requiring authentication. The extension works on YouTube pages where the user is already viewing content; no separate account creation or sign-in flow exists in the extension code.

Permission risk

Low-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

未命中敏感权限或广域站点访问规则

Publisher

pontao

Independent publisher

Email: [email protected]
Phone: --
Address: --

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Permissions

Host access