Smooth vertical and horizontal scrolling+
Slow when filtering 'Apples' on the last chart. Lots of issues related to design implementation.

Selected dates label is clipped.

X axis glitch: one date label disappeared

Some Y axis lines jumping over 1 while other just standing in the place (1.2K and 600, 1.9K)

Hey very nice app:) uncrashable and unglitchable :D
And fully supports landscape as promised :)

2 minor issues i found:
1. scrolling on second chart decreases performance
2. somehow was able to get the dates labels state as on screenshot, probably via rotating the device. Couldnt reproduce again

Definitely a like xd

UPD: reproduced, see video

Circle is clipped

Weird dot animation when single tapping chart. Shows that dots are actually not on the line but are separate objects, which doesn't look good for a user.

Chart #4 feels pretty sluggish, when power saving mode is turned on.

Wrong chart position

When scrolling/scaling fast, too much grid lines and y labels created, looks littered.

Filtering the third graph produces some lags. iOS 9+ only.

# All charts
- When table scroll starts at range selector there is a 50/50 chance that you will not be able to scroll the table.
- The bottom Y line is too dark, it stands out, not pretty.
- The values view just stays hanging there if the selected points are out of the view port. (hanging_values_view.MP4)
- X labels move faster than the chart, catches the eye.
- Not sure what to do if I want values view to be gone, just waiting there for 5 seconds it too much, sorry)

Y text and grid always animates from top.

101% .. but your app is cool

Slider moves much slower than finger. It is not "bind" to finger, but follows with delay, which doesn't feel good. In Stage 1 video it is shown that it should move exactly as finger.

Double Y axis animation is too messy when scrolling continuously and rendering FPS is low

Sometimes I cannot move slider view when it's in small state. I think slider accuracy is important for great user experience.

Max line is too high, not by design

Accordingly to issue above, Y-axis values shouldn't have the background (well, if exactly by design)

Wrong x label positions.

Views of info container when showing/hiding graphs are clipped.

On single bar chart Y labels have ".0" for no reason. On screenshots of stage 2 there was no ".0", just M at the end. Also sometimes y range starts from 0, sometimes not. Whats the logic?

Chart min value isn't taking all available space

Sometimes a part of Y axis lines moving while other aren't (1.7K line stays at place, but below and above it lines are moving up)

- After applying filter some Y axis lines move their positions and remain staying at it (after animations they always should take a default fixed position) - lines 3.3K, 3.6K
- Chart max value isn't taking all available space

Too bulky slider and other inaccuracies in design (see screenshot)

Does not support iOS 8. Telegram does.

Dates may disappear after fast movements.

Can't apply new filter until the animation of previous one is finished.

Double lines look weird.

Major issue: Very noticeable input lag.

Different width and height of bars in Night and Day modes.

Filter toggle is quite slow. Maybe because it doesn't have enough fps for faster animation.

Critical issue: line width becomes A LOT thinner during scaling. 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.

I have to wait ending of filter animation to be able to tap another filter button. I would fix it for great user experience.

y-axis not by design

Wrong dates on x-axis

Tooltip continues to show the date which is gone