EGD2021 vs Extension AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EGD2021
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This version of the app is written by Lam Yeung Shun under the supervision of Dr. Shiu Yin Yuen. The application will act as a guide dog, as an auxiliary tool to guide the visually impaired people (VIP) to the destination in both indoor and outdoor environments. Under the guidance of the navigation, the VIP can easily follow the instructions from the recorded path. The path can be recorded by themselves or received from other users.
Extension AI
Enhance your web browsing with an AI assistant that summarizes, fact-checks, and explains content directly within your browser. Interact with AI to get concise summaries, verify information, and understand complex topics easily.
- Summarize articles
- Fact-check information
- Explain content (ELI5)
- Translate text
- Generate questions
- Analyze entire webpages
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Transform your browsing experience with Extension AI, a powerful Safari extension that brings ChatGPT's capabilities right to your fingertips. Whether you select specific text or analyze entire webpages, instantly interact with ChatGPT in multiple ways: • Ask questions and discuss content directly with ChatGPT • Fact-check information with sourced verification • Get concise summaries of long articles • Receive simple explanations (ELI5 style) • Extract key points from complex content • Translate text into multiple languages • Generate thought-provoking questions Supports 11 languages including English, French, Spanish, German, Italian, Portuguese, Dutch, Russian, Chinese, Japanese, and Korean. Perfect for students, researchers, professionals, and anyone who wants to enhance their web browsing with AI assistance. Simple to use: Just select text or let the extension analyze the entire webpage, click the extension icon, choose your desired action, and get instant AI-powered insights.
Screenshots
Verdict
The clearest difference is price: EGD2021 at Free against Extension AI's $2.99. Extension AI's advantage is update cadence (every 10 months vs every 25 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
EGD2021 is free to download; Extension AI costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
EGD2021 ships an update every 25 months, Extension AI every 10 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.
| Parameter | EGD2021 | Extension AI |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | — | 1.0 (1 ratings) — better |
| Positive reviews | — | 40.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 25 months | Every 10 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Shiu Yin Yuen | Pierre Stanislas |
In-app purchases
EGD2021
No in-app purchases
Extension AI
No in-app purchases
Questions
Is EGD2021 free?
Is Extension AI free?
Do EGD2021 or Extension AI have ads?
Which is updated more often, EGD2021 or Extension AI?
Other comparisons
