8bit Pixel art Painter2.1.2 - Google Play

There is also a free version where all functions can be used for free.
The only difference from the paid version is the presence of ads.

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I can only Japanese.
I use the translation.

Canvas size can be set freely from 1 to 1000 pixels.
Basic functions such as fill, line, rectangle, circle, flip, rotate, enlarge, copy, paste, dropper, and undo are available.

It supports animation up to 1000 frames.
It can output not only animated GIF but also APNG.
APNG is an extended PNG format that allows animation.
Compatible with current major browsers such as Chrome, Firefox, Safari and Opera.
The maximum number of frames depends on the canvas size.
Transparency and animation settings are easy.

One frame has 1 canvas and 5 layer.
Since the layer contains transparent colors, the palette that can be used is limited to 255 colors.

The palette is freely editable and can be saved and loaded as needed.
By simply editing the palette, you can easily create different colors.
You can also create gradations.

You can also read and edit image files such as gif, jpg, and png saved in the terminal.