Sloppy vertical scrolling, overall poor to average performance on graphs with lots of data. Bonus goal+

Long tap on button does noting ("A long tap on any data filter should uncheck all other filters.").

It is possible to scroll both handles of the trimmer and place an annotation at the same time -> in this case the app starts underperforming a lot.

Small Lags on scroll

The third graph blinks when filtering.

Y axes never scale and change values, the series are static

While filtering the double axis chart it is possible to only have a blue chart with yellow axis

Chart is totally inaccurate, value 1590 should be way closer to the 1.5k line than to 2k, if I did not look at the values I would assume its something like 1950, not 1590.

Incorrect animation if change visibility bars

No action while long tapping any filter button, no indication that it got touched down on

Changing theme from the state described above (to achieve it you need to hide blue, then yellow, then show blue) results in axes values being gray

Bar charts' tooltip show vertical line, circles for line chart annotation do not respect the theme

Selecting the last date and zooming in on it makes the trimmer do nothing on the zoomed in chart.

No animation on the mini charts

The single bar chart doesnt show other lines when you zoom on on the left edge
+ u can trim and scroll the zoomed in single bar chart if u zoom in while holding the trimmer handle

While trimming/scrolling and holding touch to show tooltip its somehow possible to make the tooltip be invisible, only dots would be left

Just noticed that zooming in on the Y-scaled chart only zooms you in on one day, instead of a week. Although on other charts, it zooms you in on the whole week.

Still nice app, liked. I even think your design is better than provided.

Scaling graph at the edge makes it go over the bounds
Flickering dates' labels updates

No alpha on trimmed-out range
Dates and zoom out button are not by design
Tooltip starts moving with the finger way too late, at first it seemed like its not possible at all

Wrong X axis behavior on changing scale: all dates replacing and no fade-in/fade-out animation.

- There should be 6 but not 7 lines of Y axis.
- Wrong slider design: 1. no corner transparency 2. too thick top and bottom borders 3. too thin left and right borders 4. wrong arrows design 5. preview chart line width too thick 6. sliding stripe height is too large 7. covered chart line color is wrong 8. trimmed zone cover background color is wrong.
- Overall design inaccuracy (see screenshot)

Does not support iOS 8. Telegram does.

Wrong chart order

5th chart's y axis doesn't match the required design

Critical issue: 17 fps during area chart scaling on iPhone 5. For more details read my comments about performance of entry213.

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

can't choose another date by sliding your pressed finger, always have to tap on another date

slider's border blinks during night/day switching

Dates are redrawn at certain positions. Not only the UX is suffering, but also it gives this contestant a major advantage in performance over other participants.

Critical issue: 34 fps during line chart scaling on iPhone 6+. For more details read my comments about performance of entry213.