AlgoExpert sells reps. Hello Interview sells the rounds where you talk.

I opened both pricing pages on 20 Aug 2026, roughly twenty minutes apart. AlgoExpert’s purchase page had a countdown clock on it: a flash sale reading “7 PRODUCTS FOR OVER 80% OFF”, seventeen minutes left on the timer, All Access marked $59 against a struck-through $343, with the label “1 YEAR ACCESS” under the number. Hello Interview’s pricing page quoted me rupees instead: Rs 3,199 for a month, Rs 5,599 for a year, Rs 19,999 for lifetime, each one struck through from a higher figure, each one flagged “Does not auto-renew”.

So the money side of Hello Interview vs AlgoExpert is already awkward. One vendor was pricing inside a sale window with a timer on it. The other was pricing by geography, because I was loading it from India. The cleaner question, and the one that should actually settle this for you, is what each product makes you sit down and do. Those two drills are not the same. They’re barely the same sport.

What AlgoExpert actually drills

Reps. Algorithm reps, in a browser workspace, with a video waiting at the end of each one.

The product page headline is “200 Questions Spanning 15 Categories.” with four difficulty levels, and the categories listed are the usual suspects: arrays, graphs, tries, linked lists, binary trees, strings, dynamic programming, searching, sorting, greedy, recursion, famous algorithms, heaps, BSTs, stacks. Every question comes with written solutions in nine languages (JavaScript, TypeScript, Python, Swift, Kotlin, C++, Java, C#, Go), a space-time complexity analysis, and a two-part video that walks the concept first and the code second. AlgoExpert puts the video library at “100+ Hours Of Video Explanations”. There are “4 Curated Assessments” that mimic a timed day of coding rounds, and a peer mock-interview feature where two users share a workspace.

That’s a rep machine, and it’s a good one. The shape of the study week it produces is simple: pick a category, do questions until the pattern stops feeling novel, watch the explanation when you stall, move on. If your loop is three algorithm screens and one design chat, this is most of your prep.

The bundle is where it gets interesting. All Access on 20 Aug 2026 covers seven products: AlgoExpert, SystemsExpert, FrontendExpert, MLExpert, InfraExpert, iOSExpert and BlockchainExpert. Read the included-features column and the proportions jump out. AlgoExpert is “200 of the best coding interview questions.” SystemsExpert is “13 of the best systems interview questions.” FrontendExpert is “50 of the best frontend interview questions.” Behavioral prep shows up as the last bullet on all seven products, worded identically each time: “Bonus behavioral interview content.”

Bonus. That word is doing a lot of work, and I don’t think it’s an accident. AlgoExpert grew out of a DSA course, the breadth it added since is horizontal (frontend, ML, infra, iOS, blockchain), and the rounds where you talk for forty-five minutes without writing a line of code are still an accessory to the main thing.

There’s one more piece of the AlgoExpert pitch that has nothing to do with studying. Finish the questions, earn the certificate, and the product page says they refer you to tech companies so you can start their interview process directly. The section making that promise is laid out against a wall of cold emails, InMail messages and job applications that went nowhere, which is a fair description of applying in 2026. I can’t check the referral hit rate from outside the product and the page doesn’t publish one. Treat it as a bonus, not a reason to buy.

What Hello Interview actually drills

The opposite half of the loop. Hello Interview’s paid tiers all list the same four courses: “Access to System Design, Low-Level Design, Concurrency, Behavioral courses”. Not one of those is an algorithm course.

The practice side is listed as “Guided Practice for System Design, Low-Level Design, and AI Coding”, and further down the same page it puts a number on it: “44 common System Design and Low Level Design interview questions”, worked “step-by-step” with feedback as you go. There’s an “Interview Question Library with 5,000+ questions” pulled from recent real interviews, an AI tutor you can ask unlimited questions, and behavioral practice that fires follow-up questions at your stories the way a human interviewer would. The nav also carries a Code Review track and an ML System Design track, both fairly new.

A chunk of the reading is free, which matters more than the pricing table does. System Design in a Hurry is open on the web, and the premium description on the pricing page says it unlocks “premium breakdowns, patterns, and deep dives” on top of that, which reads like the free layer is the map and the paid layer is the terrain. You can decide whether the writing suits you before paying anything. That’s a real advantage over a product you can only evaluate through a marketing page.

What you’re buying, mostly, is the guided practice and the tutor. The drill is: produce a design, defend it, get told where it falls over. If you have never had anyone push back on your API boundaries or your sharding key, that feedback loop is the thing you cannot get from watching videos.

Two smaller things about the way Hello Interview sells. Every tier carries the line “Does not auto-renew”, which is rarer than it should be in prep subscriptions, and the year tier says you can upgrade to lifetime later, so the year isn’t a dead end if you keep interviewing. The month tier’s fine print on 20 Aug 2026 read “until 20 Sept 2026”, so it’s a hard window rather than a rolling one. If your loop slips by three weeks, and loops slip constantly, you’re buying again.

Hello Interview vs AlgoExpert, priced on 20 August 2026

Two caveats on that table, both mine. The currencies aren’t comparable without a conversion I haven’t done, and the AlgoExpert number is a sale number that may be gone by the time you read this. Check both pages yourself. Prices in this niche rot fast, and a dated screenshot beats a remembered figure every time.

So which one fits your loop?

Buy AlgoExpert if your next two rounds are algorithm screens and you want curated reps with explanations. Buy Hello Interview if your bottleneck is system design, low-level design or behavioral, since those are its four courses and its 44 guided practice problems. Neither one covers both halves well, and the incumbent is the weaker choice for design.

The honest version of Hello Interview vs AlgoExpert has more edges than that. If you’re a new grad six weeks out from an internship loop, algorithms are almost the whole grade, and Rs 5,599 spent on design courses is money spent on a round you may not even get. If you’re a senior engineer with eleven years of shipped systems, you can probably pattern-match your way through a medium graph question and still get taken apart in a design round for not naming a single failure mode. Seniority moves the answer. So does the company: a startup loop with a take-home and a design chat looks nothing like a big-tech loop with three coding screens.

My own bias, and it might be wrong: for anyone past about four years of experience, the design and behavioral rounds are where offers are actually lost, and a curated DSA library is the easier problem to solve for free. There’s a lot of good free algorithm material. There’s much less good free feedback on a design you drew yourself. If you want the free-material route first, we wrote up how Blind 75 and NeetCode 150 differ and a longer AlgoExpert vs LeetCode vs NeetCode breakdown that covers the paid-versus-free question in more detail.

The part both of them leave to you

Both products stop at the door. They hand you knowledge and reps, and then you’re on a video call at 9:40 on a Tuesday morning with a stranger asking you to design a rate limiter, and everything you learned has to come out of your mouth in real time, in order, under a clock. That gap between knowing a thing and performing it while nervous is not a content problem, and no amount of extra videos closes it.

That’s the piece LastRoundAI works on. Mock interviews put you in the performance itself rather than the study material, and the free plan gives you 15 credits a month that reset monthly, so you can test whether talking through a design out loud is your actual weak point before you spend anything on either of these two. If it isn’t, buy the reps. Our system design interview guide is free and will tell you fairly quickly which half of the loop you should be worried about.

One more thing worth saying plainly: you probably don’t need either product for a full year. Interview loops run six to ten weeks. Hello Interview sells a one-month tier for exactly that reason, AlgoExpert doesn’t, and if the timer on that flash sale is what’s pushing you to buy twelve months of seven products you’ll open twice, wait a week and see whether the page still wants your money. It usually does.