Several glitches. Somewhat sloppy vertical scrolling of the first graphs with maximum time range, but otherwise mostly decent speed. No filters in graph #2 and graph #4 (zoomed in).

Green Orion :)

Regarding last crash, i was just curious. It is not connected with zoom in/out whatsoever. 

STR:
Repeatedly try to further scale down the selector at minimum range.

50% space not being used

There are no visibility buttons on bar detail (forth chart)

On Pie (zoomed percentage):
- incorrect focus initial position (must be at the center)
- no reaction for tap 
- range chart must be stacked (to 100%)
- no magnets for days on range chart

Landscape mode makes stacked bar and percentage charts stop respecting applied filters

— The app blinks when filtering the third graph (the attached video #1). 
— The pie chart doesn't handle filters from the main chart.
— The pie chart filtering has 0% values (the attached video #2). 
— The relative Y-scale is incorrect (the attached screenshots #3 and #4). 
— The app is slow when zooming out the last graph.

ok, I got it

I give you scenario without rotations:
1) select a point on the first chart
2) zoom in
3) press "zoom out" button simultaneously
4) move the range selector
5) it's done, it's crashed

am I right, did you support "zoom in", "zoom out" and moving of the range selector features?

No filters under y-scaled chart

Zoomed percentage chart is totally wrong

Column visibility state is not passed to zoomed in view.

Zoomed in charts' tooltip shows dates instead of times.

Also dates and times are confusing. Apparently it takes your current locale to display dates, thats why on the second screen shot i get 2 days range, but why then is the time 12:35 instead of 00:35?

Applying filters resets annotation.

it's crashed

1) select a point on the first chart
2) zoom in
3) keep your device in landscape mode
4) rotate phone and press "zoom out" button simultaneously
5) move the range selector
6) it's done

On full interval has only 3 date labels

Strange scaling of double axis chart.

Nice app btw, good job :)

good app. liked.. here some small issues
1. bottom line clipped.
2. no delay on y-axis animations ( so they are going crozy on fast scroll)

# All charts
- Zooming into 26Feb leads into 28Feb-1Mar according to dates label and range selector, kind of strange.
- Cannot scroll table if the scroll starts inside the range selector. Selector eats the touches, which are supposed to be the table's dinner.

# Chart 2
- No graphs visibility selector.
- The point 34 040 should clearly be eather on, or slighly above the 34k line, but it is slightly below, which is inaccurate. (1.jpeg)
- Whats the point of having 1.2m line if the left graph does not even go above 1000k? (It would be simpler to read if it was just 1m btw). (2.jpeg)

# Chart 3
- A lot of unused screen real estate above the chart (I think the same has been reported above for the 4-th chart).

# Chart 4
- After zooming in we only get to see the last part of the day. Since the x labels show some kind of time, which is repeated (I think AM PM notion was missed or something), its hard to tell what exactly you see.
- After zooming, values view shows only the day and month (no time), which is supposed to be the same for the whole zoomed in chart. But the dates labels on top say otherwise, which again should not be the case.
- When zoomed in, range selector should not be visible. (need for buttons has been reported)

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

Major/critical issue: 25 fps during 1st chart scaling on iPhone 5 (40-44 fps on iPhone 6+). For more details read my comments about performance of entry213.

Major issue: no vertical scaling when I hide previous maximum. Not only the UX is suffering, but also it gives this contestant a major advantage in performance over other participants.

Major issue: the hiding chart doesn't scale during hiding/showing. Not only the UX is suffering, but also it gives this contestant a major advantage in performance over other participants.

Critical issue: completely wrong vertical scaling. I have a feeling that it just scales at certain positions without calculating actual values. Not only the UX is suffering, but also it gives this contestant a major advantage in performance over other participants.

Selection beyond the borders

Lines and points position not accurate

Max line must be higher than last y-axis line

Empty space above and under the chart

Last date label beyond the screen

Tooltip must shown time on zoomed chart

Wrong chart position

Day/night switching has no animation