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Testing and Issues

You can test this app and submit issues during the testing period of the iOS Chart contest.

Install .ipa files via AltStore

Entries with serious issues will not be able to win the contest, but even minor issues might be important for overall results.


by rating


Contrary to the contest task, Y-scale always starts from 0 on the first 2 graphs. Slightly sloppy vertical scrolling, but decent speed overall. Too many glitches (e.g. "K" on the first graph values, night/day mode labels are reversed, "Oranges34180" without a space on a data point info on chart #5).
iPhone 6 Plus, iOS 12.1
Sergey Dikovitsky Apr 17, 2019 at 16:52
Y-axis origin should match minimum value of visible lines in selected range. Column visibility buttons have incorrect size. It's not possible to hide view with values when it's on screen. At the same time it's not possible to scroll when it's visible.
Keen Pigeon Apr 19, 2019 at 08:02
'View with values' will leave screen when you move/scale visible range out from its current value (tsc-values-01.mp4).

You can scroll at any time outside chart active area, but thanks, this is the case (tsp-scroll-01.mp4). According to I tested 99% with only one chart on the screen, I did not pay enough attention to this bug.

Min Y-axis.. My bad. I did not catch this in the task
Sergey Dikovitsky Apr 17, 2019 at 16:53
Y-axis lines have incorrect color. Date is cut.
iPhone 5s / iOS 12.2
Keen Pigeon Apr 18, 2019 at 20:32
You've found the bug, that only appears after you've change the mode on a really short date string like "Fri, 1 Jul 2018". You're really good in testing I suppose )
Sergey Dikovitsky Apr 17, 2019 at 16:54
Sum of column value parts gives 102%.
iPhone 5s / iOS 12.2
Fair Quokka Apr 27, 2019 at 20:15
— The third graph blinks when filtering (the attached video).
— Vertical scrolling doesn't work unless you aim outside the graphs.
— Incorrect names for themes buttons.
— Incorrect values on Y-axies. 
— The app supports iOS 12+ only.
iPhone 6s, iOS 12.0.2
Y-axis values have incorrect trimming, for example, 3.500K, should be 3.5K.
Keen Pigeon Apr 18, 2019 at 21:01
It is not hard to make it 3.5K, but when scrolling/scaling the jumps from 3.75K to 3.5K (for example) annoy too much. 4 significant digits allows to keep constant width with enough precision.
Deselect all buttons but one column visible
IPhone 6s, iOS 12.2
Keen Pigeon Apr 19, 2019 at 07:02
How did you do this? The app does not allow to disable last filter at any chart.
In nightmode the bar chart mask is incorrect + weird filter animation.
iphone6 12.1.4
ios 12.0 min support - really? :(
Deleted Account Apr 19, 2019 at 21:41
Selected bar is drawn over the grid value labels.
Deleted Account Apr 19, 2019 at 21:43
1000 and 2000 grid values have different formatting.
Deleted Account Apr 19, 2019 at 21:47
Selection bar does not fully cover selected its base bar in some cases.
Keen Pigeon Apr 20, 2019 at 10:56
Thanks. Yeah, I should let 'selection bar' be visible outside parent bounds as chart do
Deleted Account Apr 19, 2019 at 21:55
Selection labels can overlap in some cases.
Deleted Account Apr 19, 2019 at 21:58
Second chart has only one set of grid labels which always displays values for Views data type.
For bar charts the most right value is abscent. Only visible when u place tooltip.
iphone6 12.1.4
Does not support iOS 8. Telegram does.
Major issue: does not support iOS 10.
Critical issue: does not support iOS 11.
iPhone 6+, iOS 11.2
maxY on chart has to be on the same position as y-coordinate of the highest y-value by design
Major: absence of local minimum value not only significantly reduces UX quality, but also gives this contestant an advantage in performance over other participants
can't start new filter toggle while previous one is animating
Status bar is black in night mode
Major: Filter toggling animation is not slick
iPhone X, iOS 12.2
Critical: 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.
Nobody added any issues yet...