A bar chart animation is a short video of a bar chart building itself: each bar grows from zero to its value, usually with the number counting up beside it. It's the same chart as a still one, also called a bar graph, with the comparison revealed over a few seconds instead of all at once.
This maker builds one from a small table you type: 2 to 8 bars, each with a label and a number. The bars can stand up or lie down, share the look's gradient or take a color each, and grow in a wave, one by one or all together. The scale is worked out from your numbers: the largest bar fills the chart, or, with gridlines on, the scale rounds up to the next round number.
Keep it to the bars that make your point. A handful of bars with short labels can be read in the few seconds the clip is on screen; eight long names ask the viewer to pause. If one bar is the story, turn on Highlight the largest and the others step back.