iOS Chart – Developer Challenges

Info

Author

Testing and Issues

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

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

Voting

223

Issues

Eager Wolf Apr 27, 2019 at 13:42

Sloppy vertical scrolling. Glitchy horizontal scrolling on graph #3. Overall poor to average performance.

iPhone 6 Plus, iOS 12.1

Sergey Dikovitsky Apr 17, 2019 at 22:20

Bar chart lives his own live. :)

0:14

iPhone 5s / iOS 12.2

Fairy Turtle Apr 18, 2019 at 06:38

Wow... A huge surprise for me. That was standalone, or had you perform a bunch of fast scrolling/zooming actions just a moment before that?

Could you see the same in landscape orientation?

Perfect Sheep Apr 20, 2019 at 01:36

Some issues with design, mask is visible on bar charts (not just applied on shapes), percents are black in night mode.

but the app behaves strange - minichart is scrolling and the app does some animations after you stop touching anything, so multi touch or simple scroll leads to flickering (see 2,3 video, at the i scaled with both hands for 1 second and then for 6 seconds this was happening without any touching)

man its such a pity, probably some last minute changes before the submission, or some bug with operation queues?

the design is pixel perfect (even the colors of the buttons are changed for every mode, russian labels fit everywhere), app works fast and performant, but... this flickering... unlucky

i still put like <3

0:29

0:13

0:18

iphone6 12.1.4

Fairy Turtle Apr 20, 2019 at 17:15

Mask that's visible over the entire bar chart was a good point for light mode. Seems like I forgot to check it for dark one. My bad.

App is not adopted for multi-touch, so you could meet many interesting things, I guess.

And I had another two last-minute UI changes, but moving/zooming on charts aren't so. It's surprise for me since another iPhone (SE) that I have access to, worked well with that.

Anyway, thank you for your like and great feedback!

Sergey Dikovitsky Apr 17, 2019 at 22:23

Values sum gives 97% only. X-axis labels stay in 50% alpha.

iPhone 5s / iOS 12.2

Fairy Turtle Apr 18, 2019 at 06:42

X-axis labels could stay in semi-alpha state, this is feature in my implementation. It was unclear for me by design about how to handle these semi-steps. So, I've implemented this way because I like this behaviour.

But yes, you're totally right about wrong rounding that's causing 97% in sum. Thank you about that.

Gentle Phoenix Apr 18, 2019 at 13:23

additional to first comment - lags all charts :)

0:12

iPhone 5s, ios 11

Fairy Turtle Apr 18, 2019 at 14:54

Well, I have no devices earlier than SE. Had not idea about its performance. Thank you for feedback.

Fair Quokka Apr 27, 2019 at 18:48

— Width of the graph is inconsistent when scaling.
— The app is slow when filtering.
— The shares color in the box with details about points on the graphs is incorrect when the night theme applied (the attached screenshot).

iPhone Xs Max, iOS 12.2

Classy Unicorn Apr 22, 2019 at 22:50

It's impossible to scroll by touch on chart area.

0:08

iPhone 6s / iOS 12.2

Mighty Whale Apr 21, 2019 at 00:35

Bar chart hide/show lags.

0:05

iPhone SE

Classy Unicorn Apr 22, 2019 at 22:45

Chart preview changes its viewing range but it shouldn't

0:05

iPhone 6s / iOS 12.2

Fairy Turtle Apr 23, 2019 at 16:08

Well, it's my own implementation to get the comfortable caret width according to selected range for month. Are you sure this is the opposite to the official design?

Classy Unicorn Apr 22, 2019 at 23:00

Y axis animations are very poor and flickering.

0:25

iPhone 6s / iOS 12.2

Tidy Lynx Apr 23, 2019 at 06:17

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.

Fairy Turtle Apr 23, 2019 at 15:56

Nice attempt to get me down, but my line is thinner for large selected range to improve its visual look and style. Nothing about performance at all, just for comfortable UI.

Tidy Lynx Apr 23, 2019 at 06:19

can't activate new filter until the animation of the previous one is finished

Tidy Lynx Apr 23, 2019 at 06:20

When charts animations have huge input lag - it's understandable. When bar and area charts finish theirs animations a lot later than your slider - it's understandable too. But why small chart is animated during slider movement???

0:07

Fairy Turtle Apr 23, 2019 at 16:00

Small chart gets animated because it's my own implementation for getting caret of comfortable size for smallest selected range of a month

Tidy Lynx Apr 23, 2019 at 06:20

Loading on iPhone 5 is VERY LONG

0:30

Tidy Lynx Apr 23, 2019 at 06:20

dates are clipped on iPhone 5