You can measure audio performance on your iPhone/iPad with this tool. To get a score, tap "Start measurement". The score decreases if there is a problem whithin 60 seconds.
I noticed that my iPhone XS sounds noisy when I tests my synthesizer apps. So I created this tool to measure my device's audio performance.
| Device | OS | 1st | 2nd | 3rd | 4th | 5th | Notes |
|---|---|---|---|---|---|---|---|
| iPhone XS | iOS 12.1.4 | 3 | 1 | 2 | 128 | 122 | The scores were very unstable. |
| iPhone 5s | iOS 11.4.1 | 213 | 212 | 220 | 215 | 210 | A few apps are installed. |
| iPad Air 2 | iOS 12.1.4 | 225 | 222 | 227 | 218 | 231 | |
| iPad mini 3 | iOS 12.1.4 | 153 | 120 | 97 | 142 | 168 |
The MIT License