Slightly sloppy on scrolling the first two graphs maxed out, but overall good performance. Bonus goal is implemented. The crash is regrettable, but a good app otherwise.

Crash
1. Scroll down to 4th chart
2. Highlight some bars
3. Tap on Pears on previous chart

Sorry, mate...

Dates blink and overlap with each other if you change the range slowly.

No row “all”

1. Scrolling and switching theme makes dates have wrong background color.

2. Zoom out button text color and arrow color on the left are different.

100% label got shrunk for some reason. I tnink that’s because I long pressed two filters at the same time

— The app is slow when scrolling and filtering simultaneously (the attached video).
— Vertical scrolling doesn't work unless you aim outside the slider.
— The app supports iOS 12+ only.

date selection point of the red line is under green line

Y axes disappear completely

# Chart 3
- When changing the max, the y labels sometimes get different colors, although 0 always stays the same color. Cannot reproduce all the time, it's something to do with night/day mode switching.

# Chart 5
- In zoomed out state try to select the rightmost value. 6 Apr line will be shown not as the last point in chart, but as the one before it. But the percentages are taken clearly from the last point of chart. So basically values do not match the position of the line.

Switching theme makes tooltip disappear everywhere except pie chart.

p.s. overall the app is real good i love it, transitions are really cool and it works smooth <3

Y-axis origin is bigger then minimal value in selected range.

Multi-touch not supported in range control selectol.

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. 

# All charts
- (1) When zooming into graphs, the first day starts with 3:00 and the last ends with 2:00 of the day that should not even be there, clearly it should start where the first day starts (0:00 and the last day ends - 23:00 or 00:00 of next day). (oops, I think I gave away my current timezone). I think you tried to optimize and use the smaller json, but if you do so, please make sure that you get the correct range. And the last point is also too inset into the viewport, it should be more to the right.
- (2) Dates label on top of the chart does not represent neither the visible range, nor higlightable range. Example - video below, 29dec - 3Feb says the dates label, but on the left you can select 28 Dec, and on the right - 5 Feb.
- (3) When slider is at minimal range, the inner angles get rounded in a weird way
- (4) Rounding of values could be nicer to avoid values like 30.2k and so on.
- (5) Sometimes, lines that represent y values disappear, I think only in Night mode, but still, not cool.

# All charts (continued)
- (6) No spaces betweeen digits in values view, 1000000 instead of 1 000 000.
- (7) No separators under and above charts as the design requires. Pretty easy to "tableView.separatorStyle = .none", try to hide separators only where they need to be hidden ;)
- (8) Line charts get clipped in the bottom left and top right corners.
- (9) Minor. Switching nigt mode on while scrolling stops the table.

# Chart 1
- Only show first graph, view last point (6 Apr). The value is 2930, but the point is clearly slightly below the 2.9k line, rounding issues. Also, last point is to inset, it should be more to the right.

# Chart 2
- Kinda hard to read labels that are overlapping the colored graph.

More y labels fluctuations

It's possible to hide all lines on chart where buttons should be hidden.

View with values is cut.

Grid labels change their colors for some reason.

Selection info displays 7 April at the top, while the data is for 6th. The chart header also displays a range.

Selection circles keep the color of the last displayed theme. Not sure what happened to the bottom one though.

It is possible to select the bar which is beyond the screen on the right.

Selection circle jumps to the next value below the screen, while the info stays on the last value in range.

In addition to the last point: it is actually possible to select value below the displayed minimum (240 and 274 on the video)

Just to clarify on the bar chart selection case while I’m still here: on the video 7:00 is partially visible, and I’m totally ok with being able to select it, but I was able to select 8:00, which was fully out of screen bounds. Great work overall, wouldn’t mind losing to you.

This work is brilliant!

The only downside I see is ugly Y values, but it was beyond requirements anyway.

no support

Right drag view of range control has smaller witdh and cutted corner radius

the author updated the testflight app after the deadline

Different blue colors for arrow and for label in Zoom out button

Title label should be centered by design

Bold button in navigation bar. Should be not bold by design.

Can’t move information view while finger is outside of chart. It is common iOS pattern to continue interacting with control even touch is outside of control frame Try to play with UISlider for example.

Font bolder than it should be

Different dates in chart sides and in dates title interval

No bottom line separator in navigation bar

No vertical space between bottom of the chart and X labels

Missing labels and lines for some Y axes

Not formatted big numbers

Hey, was just curious about the crash.
You just have to scroll the stacked bar chart until u cannot see it and its minichart, then click any filter. Not connected with values highlighting. Hope this helps since it means that it's probably about cell reusage.

Does not support iOS 8. Telegram does.

Major issue: does not support iOS 10.

Critical issue: does not support iOS 11.

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

minimum point on chart is clipped. Looks like minY and maxY are calculated within the main frame of chart only, not including new spaces to the left and to the right

Major issue: date labels animation is not smooth at all, they are updated on integer positions only. Thus UX is suffering and this contestant gains advantage in performance over other participants

wrong values format in tooltip

No table separators in cells

Major issue 45 fps during 1st chart scaling on iPhone 5S. On iPhone 6+ performance is usually worse, but I don't have one with iOS 12. For more details read my comments about performance of entry213.

Wrong chart position

Max line is too high under the last y-axis line, not by design

Selection is not accurate

Tooltip has no "all" label

Wrong tooltip color on zoomed percentage chart

Tooltip data is not consistent on last chart

Tooltip shakes and blinks while scrolling

Very hard y-axis animation on y-scaled chart