— Overall performance is above average.

— Filtering is slow for graphs #3 and #5 (LG Nexus 5X, Android 8.1).
— Y-scale doesn't disappear after filtering (graph #2)
— Bonus goal is implemented, however parts of the expected animations are missing (e.g. zooming out).

— Pie chart display wrong values (https://contest.dev/chart-js/entry240#issue2490).
— The third graph glitches after filtering and zooming out (https://contest.dev/chart-js/entry240#issue3142).

Error in 3 graph

Pie chart works fine, but the timeline (navigator) for it is wrong.

wrong percentage on pie, due wrong input data. Data is correct on main view, but is not for pie view

You do not have "zoom out" animation on all graphs.

Dude, there is a girl in @contests called Elene Vednight, going crazy about you, you better give her a call

Bars: can't focus on most left bar

Line chart: Y doesn't start from min value but from 0

Really good performance overall but switching is not quite fast! Have a like from me!

It doesn’t stick to bottom

Wrong y axes

Zoom in jumps to the wrong date (+1 day) for line charts and stacked bar charts.

Stacked: can't focus on most left/right values if trimmer has no full width of preview

Incorrect X axis behavior (compare the dates on the screenshots), no header animation

You have no animation of the appearance and disappearance of buttons and preview zone when zooming.

The red bars are almost invisible on this chart.

On this graph, when zoom, the range of dates should decrease, you have the entire period of all dates available

Pie scrollbar has to have bar type, not a line.
No snapping to days, months
Long click on buttons does nothing

The long touch / click works well on all charts except the final one (stacked percentage).

Several problems with pie charts:
when clicking on a date, the pie chart is created for a range of dates rather than a selected date; not sure how the start and end dates of the selection in this case are defined;

it is impossible to select less than 4 days for a pie chart;

I think this is due to misunderstanding of the requirements; But event if we suppose that by design the pie chart should display the sum of values for the selected dates, checking that for 'apples' for 3 Apr - 6 Apr shows that the pie chart value is incorrect. It is unclear how that is calculated.

Good job!
100% should probably be in the center of the circle (pie chart, 1 serie selected):

background is highlighted after clicks

Moving from point to point is not animated, but this behavior shown on video example provided by telegram (example video #1), means better to implement

The tooltip for standard mode of the percentage chart can sometimes stay displayed when entering the pie chart mode. I noticed that it happens mainly when the tooltip was displayed somewhere in the middle of the chart.

The date labels (a.k.a. x-axis labels) are pretty much off the related date on the graph. It is almost insignificant for big scale of bar charts, but in other cases - it is very obvious.