Charts are too large and take the entire screen of an iPhone 6 Plus. Lines are thinner than expected. No bonus goal. Y-scale takes a while to rescale on horizontal scrolling, but good speed overall. Percentage marks go before the values.

100% is cut off (%100)

Incorrect date format, value strings have no spaces. View with values can only be shown when panning.

Percent symbol should be after value (%2 => 2%).

some elements update later then others on changing theme, makes date labels and the chart area have wrong color for some time

incorrect mask in night mode

— The third graph is slow when scaling, it also blinks and jitters when filtering. 
— The percentage in the last graph is incorrect (the attached screenshot).

inconsistent filter animation on stacked bar

If there’s only one data type available, its filter button should be hidden according to design.

the tooltip disappears on touch up or applying filters + switching theme makes it have incorrect design

crashes on iPhone 5

On top image percentage chart Y not have 100

Percentage chart does not seem to display selection correctly. It shows the same dates on different places of the chart area depending on the length of the range selected by slider.

Selection info can overlap the currently selected bar.

Every chart has a cut off date on the bottom left initially which does not belong to the chart range (March 18, I believe)

Will write all issues here:
1) Lines scales and animations are laggy.
2) First/last x labels positioned wrong.
3) Y label positions are wrong.
4) Slider size is bigger when full selection.
5) Bar show/hide animations buggy.

Critical issue: line width is A LOT thinner than it needs to be by design. Beware: it is not some inaccuracy in design, it was made intentionally in order to achieve HUGE advantage in performance over other participants. The thinner your line, the lower CPU/GPU utilization is. I think such apps should be excluded from this contest.

Does not support iOS 8. Telegram does.

Wrong number format on tooltip