The behavior of he brush slider is rather strange depending on the max size of the brush.  I understand dedicating a portion of the slider to the smaller px sizes allows for more accuracy in selection,  but the amount dedicated to the smaller pixels sizes change in a cumbersome way.

For example,  If I set the max brush size to 50 then move the slider halfway, my brush will be 10.  This changes with the max brush size in a bad way.

• Max Brush: 050  Halfway Size: 10
• Max Brush: 100  Halfway Size: 20
• Max Brush: 150  Halfway Size: 20
• Max Brush: 200  Halfway Size: 20
• Max Brush: 205  Halfway Size: 5
• Max Brush: 225  Halfway Size: 6
• Max Brush: 250  Halfway Size: 6
• Max Brush: 300  Halfway Size: 8
• Max Brush: 400  Halfway Size: 10
• Max Brush: 800  Halfway Size: 20

So at max brush size 800px, 50% of the slider is dedicated to just 20px while the other 50% is has to cover 780px. This becomes strange at 205px max brush size when 50% of the slider is dedicated to just 5px.

I propose this be somewhat more user configurable steps.  Dedicate the first 1/3 of the brush slider to an Absolute PX Amount(ex: 20px) set by the user in preferences,  then set 2/3 mark to be a percentage(ex:66%) of the max brush size and simply interpolate between the marks.  If the max brush size isn't atleast 3x greater than the Absolute PX Amount, then just fall back to a linear interpolation over the whole slider.

It seems this kinda what Artstudio is doing now in the <200px range, and at the >200px range is sets the 50% mark to 2.5% of the max brush size.

For me i usually work in resolutions that are 4 or more times higher than what I intend to release.  I’d like to be able to resize during export since the content is already being flattened to a single layer.

For the planned vector tools, I was wondering if you would consider a suggestion for whenever that might happen.  In apps like afinity designer, they have a brush tool were lines can have their line weight adjusted after the fact.  I think this would be a fantastic feature for cartoonist.

I've been using Artstudio Pro for iPad for a while now, and I have some requests I hope you would consider. Ordered in what I consider importance and ease to implement.

1:  Fully Locking Layers, sometimes I can accidentally paint on layers I don’t intend to. It would be nice if I could protect them.

2: When a Selection tool is set to Subtract, and there is nothing selected, it should still create a new selection.

3: The Elastify filter should have a Temporary restore so you can compare the changes you made.

4: Onscreen modifier button. A button when held changes the current tool in a contextual way.  For example if using a paint brush tool, the mod button should switch to the eraser. If using the selection tool, the mod button should switch between Add and Subtract. Eye dropper should switch between current layer and all layers. Burn and Dodge should switch between each other.

5: Option to use Google Drive like how iCloud is being used.  iCloud is removing the 5GB for free option, I’d like to see Google Drive(or Drop Box) used in the same way iCloud is.

6: Warp Tool and Puppet Warp would be fantastic if possible. https://www.youtube.com/watch?v=DTuMvlsJQ3U

Right now bucket fill/magic wand work with either the Current layer or All Layers. I woud like the option to use a reference layer.  For example, if I have my line work on one layer, I’d like to reference only that layer and bucket fill onto a different layer. If I have my flat colors already laid out, i’d like the magic wand to only reference the flat clolor layer, while I work on a different layer.

Currently, I have to disable ALL other layers to do this.

I’d also like the option for the bucket fill to overfill by some number pixels, like how selections can expanded.