Prep for coding interviews and your DSA course. Kuest asks how you'd approach a problem, then helps you reason about time, space and edge cases.
4.87en iOS13,917,000+estudiantes ya estudian con Kuest
It asks before it tells, so you do the thinking and it sticks.
When you're searching for a complement repeatedly, a hash map turns an O(n²) scan into an O(n) pass.
From a C to an A in chem
“I stopped copying answers and started actually getting it. My chem grade went from a C to an A in one semester.”
3 hours → 40 minutes
“My notes turn into a quiz in seconds. What used to take me all night now takes one episode of a show.”
Finally ready for the SAT
“The plan told me exactly what to do each day. I walked in calm for the first time ever.”
It never lets me skip a step
“Annoying at first, lifesaver on test day. I could do every problem without it.”
Better than my tutor
“It's there at midnight, it's patient, and it costs less than one session with my old tutor.”
My streak is at 94 days
“The quests are ten minutes. I do them on the bus. Somehow I'm now the one explaining bio to my friends.”
Spanish finally clicked
“Talking out loud with the tutor fixed my pronunciation faster than a whole year of class.”
Found my gaps in one night
“The gap check showed me I'd never understood moles. Fixed it in 15 minutes.”
Parent here: no more 9pm meltdowns
“My son gets real help without me pretending I remember calculus, and I can see his progress every week.”
The method
Getting good at DSA is about recognizing patterns, not memorizing solutions. Explain your approach out loud before you code, state the complexity, and test edge cases by hand. Revisit problems you struggled with a few days later instead of grinding new ones only.
Talk through a problemTutor chat
Paste the problem and your attempt. Kuest asks about your approach, complexity and edge cases instead of handing over a solution.
Watch the structure changeTeaching board
Kuest draws arrays, pointers, trees and graphs on the teaching board so you can trace each step of an algorithm.
Practice explaining out loudVoice tutor
Use the voice tutor to explain your approach like you would in an interview and get follow-up questions.
Review patterns and complexitiesFlashcards
Spaced flashcards cover patterns like two pointers and sliding window and the Big-O of common operations.
Find weak patternsGap finder
Kuest notices which problem types trip you up, like graphs or DP, and steers your practice toward them.
Run a mock interviewMock exams
Take a timed mock exam or an oral exam that feels like a technical screen, then review what to fix.
Tap a topic to learn it now.
Tap a question and Kuest starts teaching it, step by step.
Same patience, any hour, every subject. Or stay on the free plan for good.
Private tutor
$40–80for one hour
Kuest Plus
$10a month, billed yearly
Study on any device
Phone, tablet or laptop. Your chats, plans and flashcards come with you.
Free forever plan. No card needed.