Roblox Mobile

Roblox Mobile, also known as the names Roblox iOS and Roblox Android, is the mobile application edition of the platform available to iOS devices (iOS 9.0+), Android devices (Android 5.0+), and Amazon Fire OS devices. The iOS version was initially released for beta testing in 2011 and later released to the public on December 11, 2012. The Android version was released in the Google Play Store on July 16, 2014 and later in the Amazon App Store on October 30, 2014. The application provides a similar experience to the Roblox website and desktop client, including the ability to join experiences, the avatar shop, character customization, friends, groups, messages, and more.

Comparison of Roblox mobile and desktop versions
Due to the limited capabilities of many mobile devices, in-experience graphics on mobile editions of Roblox are comparable to lower graphics settings on the desktop client. Some features, like dynamic lighting, are not available on mobile devices.

On all mobile devices, the experience will not run at full resolution; instead, it will run at quarter resolution with 4x MSAA (multisample anti-aliasing) to reduce stress on the graphics processor.

The mobile application also allows users to purchase Robux and Premium memberships through the App Store or Google Play Store, which meant that users could use gift cards and/or credit in either app store for their purchases. Historically, the mobile application offered different prices for different amounts of Robux when compared to the normal website, although the provided options are now the same on both platforms.

iOS
The following iOS devices are currently supported by Roblox:
 * iPhone 4s or newer
 * iPad 2 or newer
 * All iPad mini models
 * All iPad Air models
 * All iPad Pro models
 * iPod Touch 5th generation or newer

Supported iOS devices must be running iOS version 9 or higher to use Roblox. Device models older than the iPhone 6, iPod Touch 6th generation, and iPad 4 commonly struggle to run many experiences without lag spikes or other issues. The iPhone 6S, 6S Plus, and SE 1st Generation run most games at a steady 60fps.

Android
All Android devices running Android version 5 or higher are supported by Roblox. Older or lower-end devices commonly struggle to run many experiences without lag spikes or other issues.

Amazon Fire OS
The following Amazon Fire OS devices are currently supported by Roblox:
 * Kindle Fire HDX 7 (3rd generation)
 * Kindle Fire HDX 8.9 (3rd generation)
 * Fire HDX 8.9 (4th generation)
 * Fire HD 6 & 7 (4th generation)
 * Fire HD 8 & 10 (5th generation)
 * All 5th generation Fire devices except the Amazon Fire HD 2013

Glitches and bugs

 * The old "Roblox is under maintenance" HTML is sometimes present in the Roblox Mobile with the new UI.
 * Sometimes the jump button doesn't appear.
 * There was a rare glitch where the jump button became "stuck", preventing a player from jumping unless they reset or open the menu. This has not been fixed yet.
 * There was a bug where the player could zoom out through everything.
 * On some games, there is a bug where the move and jump buttons disappear, so the player is unable to move which will need the player to rejoin the game to fix it. This has been fixed recently.
 * Often, the Movement and Camera Mode wouldn't change when changed in settings.
 * There is a bug where the player could get logged out of their account.
 * Often, the Chat page won't load up. This has been fixed.
 * A bug when selected Tap to Move, then tap anywhere to move, and unselected Tap to Move by select different mode. This will cause the player to move every time they tap despite Tap to Move mode is not selected. The player needs to rejoin to fix this.
 * One bug is when the player logs out of their account, the player tries to sign back in, the human verification window won't load up. This can also happen when you're chatting in a group or commenting on t-shirts, pants, shirts, or models.
 * Sometimes, when you try to pan your camera, the camera wont move but instead it will zoom in or out. The only solution to fix this bug is to rejoin.
 * If a player is in work at a pizza place and experience this camera bug, they can just open the edit avatar menu then exit it and the bug is fixed.
 * Sometimes on the main menu and game play, all the textures (the add friends button, the buttons for the shop, the home button, messages, etc.) will appear blurry. this bug hasn't been fixed yet.

Criticism
The mobile edition of Roblox is often criticized for its tendency to drain the battery life of many devices, along with causing them to heat up rapidly. It is also criticized for its many glitches, such as the inability to use some gears due to their reliance on keyboard presses.

Up until early 2016, Roblox developers could use an API provided by Roblox to display video ads to players in their experience in exchange for Robux on a per-impression basis, which caused further criticism for experiences using this feature, along with the Roblox platform as a whole.

Trivia

 * When the app first was released, it was rated 4+ in the App Store and E10+ in Google Play (similar to ESRB ratings). It was later raised to 7+ in 2015, and then raised to 12+ in 2016. This may be due to the existence of inappropriate games which either contain violence or brief nudity on Roblox.
 * The guest mode was available on the mobile website for a short period after its removal from the desktop website.
 * Roblox previously supported Android 4.4 (KitKat) but later ended support on June 16, 2021.