Interview Coder built a real following among software engineers doing LeetCode-style screens. The core idea, an overlay that helps you in the moment rather than just before, was genuinely useful for people who blank on problems they technically know how to solve. But it’s not the only tool doing this anymore, and for candidates who face more than just coding rounds, it has real gaps.
I’ve looked at 6 alternatives. Here’s what’s actually different between them.
What to look for in an interview assistant tool
Before getting into specific tools: the right question isn’t “which tool gets the best reviews?” It’s “what kind of interview am I actually facing?” A tool optimized for LeetCode problems will be useless in a behavioral round at a consulting firm. A general-purpose AI assistant that covers behavioral, coding, and system design will be overkill for someone who only needs help with data structures.
The features that actually matter:
- Real-time overlay that works in the interview (not just prep mode)
- Coverage of your specific interview type (coding, behavioral, system design, sales, case)
- Detection avoidance if that’s a concern (some tools are more detectable than others)
- Latency during live sessions (a suggestion that arrives 8 seconds after the question is less useful than one that arrives in 2)
- Price, including whether a free tier exists for practice
Craqly
Craqly covers the broadest range of interview types: coding, behavioral, system design, and even sales and consulting interviews. It runs as a desktop overlay with low enough latency to be useful in live interviews. The mock interview mode is particularly good for practice, with follow-up questions and pacing feedback built in.
The tradeoff: it’s more tool than you need if you only face coding-heavy interviews. If you’re preparing for a pure SWE role at a company with a known LeetCode-style screen, some of Craqly’s features aren’t relevant. The free tier is enough to evaluate whether it fits your specific situation before paying.
Final Round AI
Final Round AI has been around longer than most of these tools and has a large content library for behavioral prep. Its AI answer coaching works well for STAR-format responses. Where it’s weaker: the real-time live assist mode is less polished than Craqly’s, and the coding support is more limited than tools built specifically for that.
Good fit: candidates doing non-technical interviews or preparing for senior-level behavioral rounds where the content library depth matters.
Interview Solver
Interview Solver is closer to Interview Coder’s original use case: live coding assistance for algorithmic problems. It’s optimized for that specific scenario and does it reasonably well. The interface is minimal by design.
The limitations are what you’d expect: it doesn’t do behavioral questions, doesn’t handle system design well, and isn’t built for anything outside the coding screen. If that’s all you need, it’s a reasonable choice. If you’re going through a multi-round process with different interview types, you’ll need something else alongside it.
LockedIn AI
LockedIn AI’s main differentiator is its emphasis on screen detection avoidance. It markets itself as harder for interviewers to detect than comparable tools. I’m genuinely skeptical about how durable that advantage is, detection methods improve over time, and this feature creates a kind of arms-race dynamic that probably ends badly for users who rely on it.
Separate from the detection question: the underlying quality of suggestions is decent but not exceptional. The behavioral preparation tools are basic.
Natively
Natively is open-source and free. For candidates who are comfortable configuring tools and don’t mind a rougher UI, it’s a real option. The community-contributed prompt sets for specific company interview styles are surprisingly useful.
The honest caveat: the latency in live mode is noticeably higher than paid tools, and the setup friction is real. If you have the time to configure it and the technical comfort to troubleshoot, it’s worth trying. Most people don’t have that combination.
HireAssist
HireAssist is newer and cheaper than most of the tools on this list, which makes it worth knowing about even though the feature set is thinner. The pricing is aggressive (under $20/month at the time of writing). The real-time suggestions are solid for common question types. For niche or unusual interview formats, it falls short.
Good fit: budget-constrained candidates doing mainstream software engineering interviews who want live assist without paying $50+/month.
The honest comparison
| Tool | Best for | Coding | Behavioral | Price (approx) |
|---|---|---|---|---|
| Craqly | Full-cycle interview prep | Yes | Yes | Free tier + paid |
| Final Round AI | Behavioral/senior roles | Limited | Strong | $29-79/mo |
| Interview Solver | Pure coding screens | Strong | No | ~$30/mo |
| LockedIn AI | Stealth-focused users | Yes | Limited | ~$25/mo |
| Natively | Technical users, budget | Yes | Community | Free |
| HireAssist | Budget, mainstream SWE | Yes | Basic | Under $20/mo |
The 2024 Stack Overflow Developer Survey found that 62% of developers reported using AI tools in some part of their workflow. Interview prep is a natural extension of that, but it’s worth being realistic about what these tools do. They reduce uncertainty in the moment. They don’t replace knowing the material, and they don’t eliminate the social evaluation that makes interviews stressful in the first place.
If you’re only doing coding screens, Interview Coder and Interview Solver are fine. If you’re going through the full-cycle process, phone screen, technical, system design, behavioral, hiring manager, a tool that covers all of those in one place will save you more friction than the marginal cost difference between tools.