The short answer
Charts are for seeing. Kareet is for proving.
If the question is "does this rule survive years?", scrolling will not answer it. The eye will cheat.
Manual backtests
Most traders replay by hand. It can work for some.
It is also why a lot of traders fail. You pause on the wins. You skip the ugly weeks. You remember the story, not the sample.
That feeling is not confidence. It is a highlight reel you directed.
Kareet
You write the rules you actually trade. Then you run them on two to five years of history, as if you had started then.
Weeks stack on the card. Live trades go in the journal. You see the pattern until it is boring. That is the point.
When a chart is enough
Learning how an instrument moves. Watching a news day. Marking a level you already understand.
Switch when the question becomes whether the rule deserves risk. That is a measurement question.
Where this stops
Kareet is not a charting clone. You can still look at markets elsewhere. This is the test before live size.