Volume Shader
Native GPU Test & Checkup
Free · Designed for iPad. Not verified for macOS.
Native Metal Volume Shader BM on iPhone and iPad. GPU, CPU, and memory tests, plus a simple checkup. Free, with labeled ads. History stays on your device.
Volume Shader is the viral Volume Shader BM GPU test, built natively for iPhone and iPad.
The Mandelbulb ray march runs in Metal on your iPhone or iPad.
WHAT YOU CAN DO
• Run Volume Shader BM at Simple, Standard, Advanced, or Extreme
• Use Standard + 30 seconds when you want a score you can compare
• Drag to rotate, pinch to zoom, and pan. Explore does not save a score.
• Time CPU and memory on the same device
• See GPU, memory, display, storage, and thermal state
• Walk a display, touch, haptics, speaker, and battery checkup
HEAT AND BATTERY
This is a real GPU workload. The device can get warm and the battery will drain faster while a test is running. Extreme asks for confirmation. The app stops itself if iOS reports a critical thermal state.
ADS
Volume Shader is free. A small banner sits on Test and Device. Labeled native ads sit on Test, Device, and Checkup. Ads do not overlay the GPU test or fullscreen checkup steps. You can report an ad from the AdChoices icon on the ad.
After one free Test session and one free Checkup session (each about 15 minutes), the next free session waits about 30 minutes. You can wait, or watch an optional short ad to unlock unlimited Tests and Checkup for 2 hours. Declining the ad does not block the rest of the app.
PRIVACY
No account. History and checkup marks stay on this device. A finished GPU window can be shared as anonymous device stats (FPS, GPU, device model, screen, OS version). Turn that off in Settings. If you tap Share, iOS’s share sheet sends only what you chose to the app you pick. Ads use the ads SDK described in the privacy policy.
Support: https://volumeshaderbm.com
Privacy: https://volumeshaderbm.com/privacy-policy/
Optional short ad unlocks unlimited Tests and Checkup for 2 hours after your free session, or wait for the next free window. GPU sessions and checkup steps stay interruption-free.
The developer, Shahid Ali, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shahid Ali
- Size
- 16.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 VolumeShaderBM