Very sloppy performance when scrolling first graphs.
Bonus goal completed.

Hiding charts while scaling results in unexpected behavior:
- chart is rendered incorectly
- overlapping axes

Scroll is not smooth.

PS. No testflight no bugs? :)) welcome to the bug battle.

If tap twice on bar chart there would be two lines.

Slider have corners.

Selected line leave white dots when disappears.

No header for last chart.

Graphs do not persist their state on table view scroll. If you select some range or zoom into graph, then scroll the table view and go back, the graph is completely reset

Where 100%? :)

It is very hard (impossible?) to set the tooltip on the last point because of the bouncing and finger touch feedback. In the video i managed to put my finger on the last date, but it wasnt the last x point?

X points are way too offset from the date labels

It is fairly easy to render chart unresponsive.

STR:
1. zoom into chart
2. scroll the trimmer while pressing "zoom out"

U can bug the 4th chart to be unusable as well, but in a different way:
1. Hold the trimmer handle while tapping the tooltip
2. Right after tap - move the handle

Result: u can scroll the original graph, while the buttons from the zoomed one are displayed. But as soon as your release the finger, the whole chart will become unresponsive until relaunch.

Dragging the zoomed chart at the right edge and then zooming out while holding the finger results in unresponsiveness as well

Multi-touch not supported in range control selector.

Can't grab and move another side of the selector while first one under the finger.

Yeah, it wasn't any requirements about it, but iPhone was built with multitouch support from the ground and this issue looks not user friendly and wierd.

Charts and dates are loaded after noticeable delay.

There are some cases when chart is not vertically scaled.

Poor scrolling performance.

Major: bars have artefacts.

— Lower bound values are beyond the X-scale (the attached screenshot #1).
— The slider has small glitch in the night mode (the attached screenshot #2).
— Chart #2 jitters when filtering (the attached video #3).
— The empty box on the pie chart (the attached screenshot #4).
— The app is slow when scrolling and filtering.

You can make the whole application unusable/unresponsive if you repeat the step described above for the first 2-3 charts, depending on your screen size. And here the table view scrolling will not help

Cool spring animation of X axis! But y axis scale animation super fast.

Animation levels when max value change is inverse.

Hi, great work. I really like check mark animation and bouncing of graphics on the corners. Somehow on Char#3 I faced stack situation while scrolling back and forth. Reproduced it multiply times (but not every time)
P.S. Thanks for providing slow animation mode

Bug when selecting last value.

Graphs move not smooth when scroll. Also y labels are very strange.

X label positions are wrong.

Some X labels disappear when stop scrolling.

Info view hide selected values (mostly in the beginning of chart).

If your try scroll table view and finger touch hit "select range view", table not scrolling

When stop you finger on scroll change, Y labels are stopped to in intermediate position. Lags on every charts on iPhone 5s.

The trimmer doesnt allow the user to trim to min range and stay there, if you keep minifying the range the trimmer area will start scrolling in this direction. Thus it is not a trivial task to scale the chart to a smallest range.

Going to landscape mode on the zoomed in chart removes the zoom out button from the screen. Now its not possible to go back (unless you scroll the tableview to reload the cell)

Similarly, with manipulations with hiding you can make tooltip non-visible

Does not support iOS 8. Telegram does.

Major: Filter toggle lags on bars

MaxY on chart has to be on the same position as y-coordinate of the highest y-value by design

48 fps during bar chart scaling on iPhone 6+. Not bad. For more details read my comments about performance of entry213.

Major issue: dates are updated on certain positions only. Not only the UX is suffering, but also it gives this contestant a major advantage in performance over other participants.

Major issue: can't drag your finger to select another date. Always have to tap