No extra cost. All features are available.

You can reinstall from "AppStore" any number of times. No additional fee will be incurred.

Memory may be insufficient. Please close other applications.

It may be due to insufficient memory or model. Please use silent mode.

Tap the filter you want to adjust, the adjustment bar will be displayed.

You can adjust by moving the bar left and right.

"Round blur" and "square blur" can be resized by pinching gesturees.

"Paint blur" will be effective outside the range selected with the pen.

Those with large color difference and wide range are not suitable because they are easy to blur.
It is suitable for small dust and face dirt.
If you can not, apply the blurring function from above. It becomes natural.