Phone GPU Test Online — iPhone & Android
Run a real GPU benchmark on your phone with no install. Tips for iOS Low Power Mode, Android throttling and what FPS to expect.
Want to know how your phone GPU stacks up — without installing an app? Volume Shader BM runs in any mobile browser with WebGL 2.0 and gives you FPS, frame time and stability in under a minute.
Quick answer
- Works in Safari (iPhone / iPad), Chrome, Edge, Firefox on Android.
- Start in Light or Medium mode — Heavy will throttle most phones quickly.
- Plug in power, disable battery saver, give the device 1–2 minutes to cool between runs.
- FPS is the headline metric, but stability matters most on phones.
iPhone & iPad
Open Safari, hit Start Test. iOS aggressively throttles WebGL once the chassis warms up, which is why a fresh iPhone shows a much higher peak FPS than the same phone after two minutes of testing. Tips:
- Turn off Low Power Mode in Settings.
- Use a phone with at least 30% battery — iOS caps GPU clocks when low.
- Keep the screen cool. A case can trap heat and cost 20–40% FPS.
- Don't enable Private Browsing on older iOS — WebGL 2.0 can fall back to software.
Android
On Android the difference between Chrome and Samsung Internet is usually small. The bigger factors are:
- Game mode / Performance mode on by default? Turn it on for testing.
- Adaptive battery / battery saver should be off during the run.
- Some phones throttle the GPU when the display is on at high brightness.
- Recent Android builds expose
chrome://gpujust like desktop — useful to verify GPU is active.
What FPS should I expect?
Flagship phones (recent iPhone Pro models, top-tier Snapdragon / Tensor) usually land in the 30–60 FPS range in Medium. Mid-range phones often sit at 15–30 FPS in Medium, and Light mode is where you'll get the most comparable numbers across devices. See the FPS result guide for full tiers.
Run a phone GPU test
Open this page on your phone and tap below.
