Cheapest Alternatives to AlgoExpert
AlgoExpert charges around $99/year. That's not outrageous for interview prep, but it's also not nothing — especially when you're job hunting and trying to keep costs down. The good news: several platforms do the same job (or a better one) for free.
This list focuses on price-to-value. Not just "it's free" — but whether the free option actually prepares you for a real interview at a competitive company.
TL;DR
- AlgoExpert costs ~$99/year and offers curated problems with video explanations
- SkillFlow is free and adds adaptive problem selection and AI follow-up interviews
- NeetCode is free (with a paid Pro tier) and covers the most important 150 problems with video walkthroughs
- LeetCode's free tier is massive — 2,000+ problems, no paywall required
- HackerRank and Codewars are free but better for general skill-building than targeted interview prep
- If you want AlgoExpert's curation without the price tag, SkillFlow and NeetCode are the closest free matches
What You're Actually Paying for With AlgoExpert
Before comparing alternatives, it's worth being clear about what AlgoExpert offers:
- ~170 curated problems across core interview topics
- Video explanations for every problem (Clement Mihailescu's style is genuinely good)
- Solutions in multiple languages (Python, Java, C++, JavaScript, Go)
- Data structures crash course (extra cost) and system design content (extra cost)
- No adaptive feedback — you choose what to work on
The ~$99/year gets you curated content and polished video explanations. If you can get those elsewhere — or skip the videos entirely — you can do this for free.
The Cheapest Alternatives to AlgoExpert, Ranked
1. SkillFlow — Free
SkillFlow is free with no paywall. Unlike AlgoExpert's static problem list, SkillFlow adapts which problems you see based on where your skills are weakest across 10 coding topics.
What you get:
- Adaptive problem selection — the algorithm picks your next problem, not you
- Skill score from 1–1000 that updates after every session, with per-topic proficiency tracking
- AI follow-up interviews after each submission: "Why did you choose this approach?" "What's the time complexity?" This is closer to a real interview than any video explanation
- Challenge mode: 45-minute timer, problem hidden until you start
What you don't get: Video explanations. If you need video walkthroughs for every problem, SkillFlow isn't a substitute for AlgoExpert on that dimension.
Best for: Candidates who have basic foundations and want to close their specific skill gaps — not someone who needs a video tutorial for every topic.
Price: Free
2. NeetCode — Free (Pro available)
NeetCode has become the default free alternative to AlgoExpert for a lot of candidates, and for good reason. The NeetCode 150 list is a carefully curated set of the most important interview problems, and the free video walkthroughs on YouTube are among the best explanations available anywhere.
What you get (free):
- NeetCode 150 — curated problems organized by topic and pattern
- Free video explanations on YouTube for every problem
- A roadmap that tells you what to work on and in what order
- Written solutions in multiple languages
What you get (Pro, ~$79/year):
- In-platform code editor
- Subscription to interview problems with video
- Additional practice problems and courses
Best for: Beginners and intermediate candidates who want structured, curated prep with video explanations — similar to AlgoExpert's pitch but free.
Price: Free (Pro at ~$79/year — still cheaper than AlgoExpert)
3. LeetCode — Free Tier
LeetCode's free tier includes over 2,000 problems — more than 10x AlgoExpert's problem count. You won't get video explanations for every problem, but you get community discussion threads that often contain multiple approaches, edge case analysis, and optimization breakdowns.
What you get (free):
- 2,000+ problems across all major topics
- Community solutions and discussion for nearly every problem
- Filter by topic, difficulty, and acceptance rate
- Basic streak and solve-count tracking
What you don't get (free): Company-specific tags, premium problems, and official video solutions. Those require LeetCode Premium at ~$35/month or $159/year — which is actually more expensive than AlgoExpert.
Best for: Candidates who want maximum problem volume and community resources without paying anything.
Price: Free (Premium at $159/year — avoid if cost is a concern)
4. HackerRank — Free
HackerRank is free and covers algorithms, data structures, and language-specific challenges. It's used heavily for online assessments by mid-size companies, so it has some practical value beyond prep.
What you get:
- Free problem sets organized by domain and difficulty
- Language-specific tracks (Python, Java, SQL, etc.)
- Interview Preparation Kit — a structured 69-problem set
- Profile that companies can view
What you don't get: Adaptive feedback, video explanations, or a curated path comparable to AlgoExpert's.
Best for: Candidates targeting companies that use HackerRank OAs, or beginners building foundational skills. Less useful as a replacement for AlgoExpert's targeted interview prep.
Price: Free
5. Codewars — Free
Codewars uses a kata system with ranked challenges (8 kyu for beginners up to 1 kyu for very advanced). It's gamified and community-driven — think of it as LeetCode with a different UI and more beginner-friendly onboarding.
What you get:
- Free problems across all skill levels
- Community solutions and discussion
- Gamified progression (kyu/dan ranking)
- Available in 55+ programming languages
What you don't get: Interview-focused curation. Codewars covers a wide range of problems, but the mix isn't filtered for the topics that actually appear in technical interviews.
Best for: Beginners who find LeetCode overwhelming, or developers who want to practice in a less common language.
Price: Free
Quick Price Comparison
| Platform | Price | Video Explanations | Adaptive Practice | AI Follow-up |
|---|---|---|---|---|
| AlgoExpert | ~$99/year | ✅ | ❌ | ❌ |
| SkillFlow | Free | ❌ | ✅ | ✅ |
| NeetCode | Free (Pro ~$79/yr) | ✅ (YouTube) | ❌ | ❌ |
| LeetCode Free | Free | ❌ | ❌ | ❌ |
| HackerRank | Free | ❌ | ❌ | ❌ |
| Codewars | Free | ❌ | ❌ | ❌ |
What If You Want Adaptive Practice?
One thing all the platforms above — including AlgoExpert — have in common: none of them tell you what to practice next. You get a problem list and you choose. If you consistently pick problems you're already good at (which most people do without realizing it), you're not closing the gaps that will hurt you in a real interview.
SkillFlow is the only platform in this list that tracks your performance across 10 coding topics and selects problems based on where your skills are genuinely weakest. If your dynamic programming proficiency is at 42/100 and your arrays score is at 78/100, it serves you a DP problem — not an arrays problem that feels comfortable. That adaptive loop is what separates pattern-based improvement from random grinding.
It's also free. Which makes it the cheapest AlgoExpert alternative in both price and learning overhead.
The Honest Verdict
Use SkillFlow if: You want structured feedback, adaptive problem selection, and AI follow-up questions — and you don't want to pay anything. It's the closest thing to a "smart tutor" at zero cost.
Use NeetCode if: You want AlgoExpert's curated list and video explanations but want to avoid paying $99/year. The NeetCode 150 + YouTube is an excellent free match for what AlgoExpert offers.
Use LeetCode free tier if: You want maximum problem volume and community discussion threads. Avoid Premium unless you specifically need company tags.
Use HackerRank or Codewars if: You're just starting out and find the other platforms overwhelming, or you need to prep for company-specific OAs on those platforms.
There's no reason to pay $99/year for AlgoExpert when SkillFlow, NeetCode, and LeetCode together cover everything AlgoExpert does — plus things it doesn't.
Try SkillFlow free — no credit card, no trial limits →
Frequently Asked Questions
What is the cheapest alternative to AlgoExpert?
SkillFlow and NeetCode are both free, making them the cheapest AlgoExpert alternatives. SkillFlow is fully free with adaptive problem selection, AI follow-up interviews, and a skill score system. NeetCode's free tier includes the NeetCode 150 problem list and free YouTube video explanations that are comparable to AlgoExpert's video content.
Is NeetCode free compared to AlgoExpert?
NeetCode has a free tier that includes the NeetCode 150 problem list and video solutions (on YouTube). AlgoExpert costs approximately $99/year. NeetCode Pro is available at around $79/year — still cheaper than AlgoExpert — but most candidates get significant value from NeetCode's free resources alone.
Can I prepare for a coding interview without paying for AlgoExpert?
Yes. Many candidates pass interviews at top tech companies without any paid tools. The NeetCode 150 problems are available free. SkillFlow's full platform — including adaptive practice, AI follow-up questions, and skill tracking — is completely free. LeetCode's free tier includes thousands of problems. The paid platforms (AlgoExpert, LeetCode Premium) add convenience, not fundamentally better preparation.
Does AlgoExpert have a free trial?
AlgoExpert offers limited free access to a small number of problems without a subscription. You can view the structure and a sample of the content, but full access requires purchasing. If you want to evaluate it before paying, the free sample is small.
Is LeetCode free better than AlgoExpert paid?
For problem volume and community discussion, LeetCode free is unmatched. For structured video explanations and curated paths, AlgoExpert has an edge. For adaptive practice that actually adapts to your weak spots, neither competes with SkillFlow. The right answer depends on what's holding you back: if it's problem quantity, LeetCode free wins; if it's video guidance on specific patterns, AlgoExpert is worth it; if it's unclear where you're weak, SkillFlow addresses that directly at no cost.