— Overall performance is below average.
— The design doesn't comply with the guidelines. 
— The app is slow when scrolling and scaling the graphs.

Common:
- App doesn't have smooth animation for timeline and y lines.
- In zoomed percentage mode minimap showing all data, instead selected weak and chart showing timeline.
- Stacked bars chart give access to move scroll out of data.

Mac os - Safari 
- In zoom-in mode on the first three charts incorrect date format. In different browsers it's work.
Win10 - IE 11 
- App totally not work.
Win10 - Edge 
- Events about moving scroll or click on a chart don't work. Working only check/uncheck visibility, but check icon change by native and it's not good looking.

No long touch / long click functionality has been implemented.

The 'views' button is displayed for the single column chart.

The stacked percentage chart seems upside down starting form the lowest values at the bottom.

Timeline (navigator) is displayed for single column chart in zoomed mode.

Impossible to select less than 5-6 days for pie chart

But I can clearly see that the author has put lots of time and efforts into this app. So, no dislike from me.

No devicePixelRatio supported

Grid is not animated

If you move mouse out of scrollbar when still having button down, movement stops

Administrators Telegram, where my graphics? Yesterday I sent a zip archive, but I do not see my work in the list