Comparison

GLview Mobile vs EXTENSION.app

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

GLview Mobile

This utility app provides detailed information about your device's graphics hardware, including OpenGL ES and Apple Metal capabilities. It offers access to extension documentation, shader information, and includes benchmark tests for various OpenGL ES versions. Useful for developers and those interested in comparing device performance.

Highlights
  • GPU hardware information reporting
  • OpenGL ES and Apple Metal capabilities
  • Access to extension documentation
  • Shader capabilities display
  • OpenGL ES benchmark tests
  • Cloud storage for OpenGL information
Read full description

OpenGL Extensions Viewer for iOS displays the vendor name, the version, the renderer name and the extensions for OpenGL ES 1.1, 2.0 and 3.0 and Apple Metal. 
From the makers of the famous OpenGL Extensions Viewer on PC and Mac, the iPhone version can access each extension documentation, shader capabilities and also features a benchmark for OpenGL ES 1.1 to ES 3.0. 
Ideal if you are developing application for iPhone, or want to compare between every iPod and iPod model. CPU information, iOS revision are also reported. Main key features:

• Reports iPhone/iPod hardware information (CPU frequency, Bus frequency, Operating System, Device Name, CPU model). 
• Reports OpenGL ES information and gives access to OpenGL Extension specification online (requires internet connection). 
• Reports Metal iOS 7 API feature level..
 • Allow to test graphical rendering tests for OpenGL ES 1.1, 3.0, and supports features like Multisample anti-aliasing. 
• Submit your OpenGL information into to the Cloud storage and check the results on the Mac and PC version.

About

EXTENSION.app

This app enhances video playback on iOS devices, enabling Picture-in-Picture mode for supported websites and apps. It allows for simultaneous playback of multiple videos, background audio, and provides extensive sharing and browser extension capabilities.

Highlights
  • Picture-in-Picture video mode
  • Simultaneous video playback
  • Background audio playback
  • Share extensions for videos
  • Safari browser extensions
  • iMessage extension for videos
  • Customizable shortcuts
Features
Read full description

EXTENSION.app is the all-in-one extension app for iOS, iPadOS, iMessage, watchOS, macOS, tvOS and visionOS. ■■■ EXTENSION.app for iOS and iPadOS ■ In-App Web Browser: - Automatic activation of "Picture-in-Picture" video mode on supported websites. - Simultaneous playback of "Picture-in-Picture" video with other video apps, without sound. ■ In-App Video Picker: - Selection of video files from Files app, iCloud Drive and On My Device directories. - Selection of music videos from Music Library. - Selection of videos from Photo Library. - Simultaneous playback of "Picture-in-Picture" video with other video apps, with or without sound. ■ Share extensions: - Player > Picture-in-Picture: extension activates Picture-in-Picture mode for videos. - Player > Picture-in-Picture Mix: extension activates Picture-in-Picture mode for videos to play simultaneously with other video apps, without sound. - Player > Fullscreen: extension activates Fullscreen mode for videos. - Player > AirPlay: extension activates AirPlay for sharing video to another device. - Player > Background Audio extension plays video in background. - Supported apps: Safari, Photos, Files, Messages and other apps with a Share button. ■ Safari browser extensions: - Player > Picture-in-Picture: extension activates Picture-in-Picture mode for videos. - Player > Picture-in-Picture Mix: extension activates Picture-in-Picture mode for videos to play simultaneously with other video apps, without sound. - Player > Fullscreen: extension activates Fullscreen mode for videos. - Player > AirPlay: extension activates AirPlay for sharing video and audio to another device. - Player > Background Audio extension plays video and audio in background. - Player > Mute: extension mutes or unmutes video and audio. - Player > Loop: extension loops video and audio playback. - Player > Skip Forward and Backward: extension skips forward or backward 15 seconds of video and audio. - Player > Next: extension skips to the next video and audio, or skips to the end of video and audio. ■ Shortcuts: - Collection of Shortcuts to launch X.app from Home Screen, Action Button, Tap Back or automation. - "Browser" shortcut to open In-App Web Browser with On Screen website, Clipboard or list of suggested websites. - "Browser > Favorite" shortcut to open favorite website. - "Files" shortcut to open Files picker. - "Photo Library" shortcut to open Photo Library picker. ■■■ EXTENSION.app for iMessage - Activation of "Picture-in-Picture" video mode via Copy&Paste and Drag&Drop of a video or a website URL from a conversation. ■■■ EXTENSION.app for watchOS ■ In-App Web Browser: - Input of a website URL to open a website. ■ Web Search: - Supported search engines: Google, Bing or DuckDuckGo. --- EXTENSION.app is free to use and provides an optional auto-renewable subscription. EXTENSION+ is a Universal Subscription, which hides “Subscription Banner” at the top of the app and unlocks additional features on all supported platforms: iOS, iPadOS, iMessage, watchOS, macOS, tvOS and visionOS. Features, which require EXTENSION+ subscription, are marked with (+) sign. Terms of Use: https://extension.app/terms Privacy Policy: https://extension.app/privacy

Screenshots

GLview Mobile4 screens
EXTENSION.app4 screens

Verdict

The call

The clearest difference is in-app purchases: GLview Mobile at none against EXTENSION.app's 4. GLview Mobile also leads on iOS requirement (12.0 vs 26.0). EXTENSION.app's advantage is ads (none vs shown) and ratings volume (4.9K vs 7). On price, rating and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. EXTENSION.app sells 4 in-app purchases, starting at $0.99 per month. GLview Mobile asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for GLview Mobile against 4.6 for EXTENSION.app. That said, the two scores are not equally well evidenced: EXTENSION.app has 4.9K ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 68% of GLview Mobile's written reviews are positive against 78% of EXTENSION.app's.

UpkeepUpdate frequency

GLview Mobile ships an update every 4 months, EXTENSION.app every 5 weeks. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

Scorecard7 real differences · 3 level
GLview Mobile versus EXTENSION.app: the parameters behind the verdict, then further details
ParameterGLview MobileEXTENSION.app
PriceFreeFree
Rating4.7 (7 ratings) — better4.6 (4.9K ratings)
Positive reviews68.3% of reviews77.6% of reviews — better
Number of ratings74.9K — better
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro — better
Requires iOS12.0 — better26.0
Further details — not scored
Size73 MB143 MB
Age rating4+17+
DeveloperStephane DenisX.app

Customer experience

GLview Mobile

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews41 reviews
Positive68.3%
Neutral4.9%
Negative26.8%

EXTENSION.app

All ratings4,930 ratings
Positive91.0%
Neutral2.8%
Negative6.2%
Written reviews548 reviews
Positive77.6%
Neutral7.7%
Negative14.8%

Bugs and requests

GLview Mobile

Not enough reviews yet to summarise bugs or requests.

EXTENSION.app

Reported bugs

4 issues
  • Picture-in-picture mode not working consistently
  • Age-restricted videos unable to be viewed
  • Playlist shuffling not working on iPad
  • Freezing or crashing on certain devices

Requested features

5 requests
  • Add playback speed adjustment in PIP mode
  • Implement a history or bookmarking feature
  • Improve seamless transition to PIP mode
  • Add support for more apps beyond just web-based ones
  • Integrate with system-level PIP for better integration

In-app purchases

None

GLview Mobile

No in-app purchases

4 purchases

EXTENSION.app

Subscriptions4
  • EXTENSION+ Monthly$0.991 Month
  • EXTENSION+ Monthly for Family$1.991 Month
  • EXTENSION+ Yearly3 Days trial$9.991 Year
Show 1 more
  • EXTENSION+ Yearly for Family3 Days trial$19.991 Year

Questions

Is GLview Mobile free?
GLview Mobile is free to download, with no in-app purchases.
Is EXTENSION.app free?
EXTENSION.app is free to download, with in-app purchases available.
Which has better reviews, GLview Mobile or EXTENSION.app?
GLview Mobile is rated higher. GLview Mobile averages 4.7 out of 5 from 7 ratings, while EXTENSION.app averages 4.6 from 4.9K ratings.
Do GLview Mobile or EXTENSION.app have ads?
GLview Mobile shows ads; EXTENSION.app does not.
Which is updated more often, GLview Mobile or EXTENSION.app?
GLview Mobile ships an update every 4 months, and EXTENSION.app every 5 weeks. Most recently, GLview Mobile was updated on October 17, 2026 and EXTENSION.app on October 18, 2026.

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