The OA is where most applications quietly die. No interviewer to read your reasoning, no partial credit for the right idea implemented too slowly — just test cases passed, or not.
desktop app required · windows & macos
# question read from screen — 1.2s
approach: sliding window + hash map
time: O(n) · space: O(k)
edge cases: empty input, k > len(s), all-duplicate
Each one scores differently and watches for different things. What that means for you:
Half of the questions candidates actually hit are multiple choice — CS fundamentals, language trivia, aptitude items. The algorithm problems everyone grinds LeetCode for are barely a third.
Share of 244 classified assessment questions handled on AceRound over the last 90 days.
CS fundamentals, language trivia, aptitude
the LeetCode-style part everyone prepares for
design and trade-off questions, typed out
analyst and data engineering roles
The overlay and the screenshot-to-answer workflow only exist there. The web dashboard is for reviewing sessions afterwards.
AceRound reads the problem currently on screen — statement, constraints, examples. Nothing is copied and you never leave the assessment tab.
Approach, complexity, edge cases and a runnable snippet in Python, Java, C++, JavaScript, Go, C# or SQL — so the hour goes on implementation instead of pattern-hunting.
