Very low FPS on filtering the last chart. Some of the required animations are absent.

Information view blinking

Strange dates animation

No animation on range selector (filter) changing

Long touch to deselect all didn’t implemented

Some bars in “Views” chart disappear on zoom

Dates are overlapped

Line joints change during movement

Major: Filter toggle doesn't animate small chart. Not only the UX is suffering, but also it gives this contestant a major advantage in performance over other participants.

Wrong y-axis

Day/night swithing has no animation

"A long tap on any data filter should uncheck all other filters"

Dancing peaks. See on the right side

Scroll shakes after animation completed

— Upper bound values are cut when scaling, the graphs are slow when scrolling (the attached video #1).
— The design does not comply with the guidelines (the attached screenshot #2).
— The graphs are laggy when filtering (the attached video #3).
— Missing animations for zooming in the last graph.

Line ends and corners not round

Range selector (filter) don’t disappear in “Views” chart

Pie (zoomed 5 chart) blinks sometimes

If you try to deselect any option and zoom you will get crash

If you move your finger into information view (when you selecting) you will get glitches bugs and crashes

Percentage adds up to 97, not 100

Percentage adds up to 96, not 100

Does not support iOS 8. Telegram does.

Look at zoom out button

Status bar is black in Night mode.

Wrong order

Crashes

Critical: 36 fps during 1st chart scaling on iPhone 6+. For more details read my comments about performance of entry213.

More screenshots about y-axis

Wrong charts sort

This chart must start from 0

Tooltip and line not by design

Tooltip blinks and shakes

Chart must be beyond borders

Wrong x-axis

Wrong selection on last chart

x-axis is completely broken

Wrong time on tooltip or x-axis

Blue and yellow labels must stay on their places

Scroll window changed own width