Streaks that cost something
Miss a day and a freeze quietly covers you. Miss two and you feel it. That sting is the product.
One engine · 10 tracksOne set a day.
One set a day.
That's the whole app.
Nine questions, one answer you say out loud, one bug to spot. 5–15 minutes.An AI scores you, the engine remembers what you fumbled, and tomorrow it brings it back. No courses — just today's set.
No signup for your first set · free every day
4 TRACKS LIVE · 6 ON THE WAY · NEW SET 00:01 IST
The library
See the full library→One engine. Every track.
Same daily loop, same streak, same brain scoring you — pointed at whatever you're trying to get good at. Start one today; we'll ping you as the rest unlock.
Start today4
LiveEngineering (SDET/QE)Bar-raiser interview prep for SDET/QE.MCQSpeakCodeAI mock713 questions · 18 stacksOpen track→Daily setAI EngineeringPrompt, agents, RAG, MCP, evals — daily.MCQSpeak90 questions · rotating poolStart today’s set→Daily setTechnical CommunicationExplain tradeoffs, run reviews, write docs.MCQSpeak90 questions · rotating poolStart today’s set→Daily setSystem DesignScale, cache, shard, CAP — one set a day.MCQSpeak90 questions · rotating poolStart today’s set→
On the way6Tap one to vote it up the queue
DSA & Problem SolvingPatterns and problems, spaced-repeated.Notify me→Product ManagementProduct sense, metrics, prioritisation.Notify me→Data EngineeringPipelines, modelling, SQL depth.Notify me→DevOps / SRECI/CD, reliability, observability.Notify me→SpeakKnackSpoken English & communication reps.Notify me→KidsKnack (Schools)Future skills for schools — B2B.Notify me→
This is the whole thing. Try it.
Three checkpoints, 5–15 minutes, then you're done for the day. Below is the real surface — live, tappable, no signup. Nothing you tap here is saved.
Question 3 of 9Medium
A UI test passes locally and fails only in CI. What do you check first?
Go on — tap one. Nothing here is graded.
The habit is the feature.
Anyone can hand you a question bank. The hard part is making you come back tomorrow — and knowing exactly what to put in front of you when you do. That engine is horizontal: it doesn't care which track it's pointed at.
XP, levels, leagues
Named Levels 1–6 — never an “Unranked” shrug. Day one, you're already a Level 1 with a rank to defend.
It remembers what you fumbled
Adaptive difficulty plus spaced repetition. The question you missed on Tuesday comes back on Friday — not never, not tomorrow.
An examiner, not an answer key
Say your answer out loud. Get scored on structure, depth and clarity — and told the one thing you left out.
Prateek Kukreja
Builder · SDET Manager
Who writes thisWhy DailyKnack exists→
Every question comes from someone who has been on the other side of the table.
Fifteen years as an SDET and SDET Manager, and 100+ interviews taken — not answered. The set you get is what actually gets asked, in the order it actually gets asked, with the follow-up that actually decides it.
Amazon (Alexa)VisaPlayStationPaytm
15years in SDET/QE
100+real interviews taken
18stacks covered
Day oneTomorrow you'll either have a 1-day streak
Tomorrow you'll either have a 1-day streak
or nothing at all.
One set. Fifteen minutes. The only version of this that works is the one you actually start.
Free daily set forever 3-day full access, no card