The 5 best Interview Solver alternatives in 2026

By The Assistly team · June 5, 2026

Interview Solver has a clear pitch: a desktop overlay (plus a phone "Companion Mode" and an iOS app) that helps you through coding interviews. If you only ever do LeetCode-style screens and you like the second-device idea, it can fit.

But a lot of people end up looking for something else, and the reasons are pretty consistent.

Why people look for an Interview Solver alternative

• It is not always "real-time." Reviewers report that it mainly transcribes and often needs a manual trigger to produce an answer, rather than streaming guidance as the conversation happens.
• Stability on hard questions. Users report lag, freezes, and crashes exactly when it matters most — on the harder problems.
• Inconsistent code. Several reviewers note the generated code can be hit-or-miss.
• Clunky UX. The overlay is described as eating a lot of screen space, and the App Store app reportedly shipped with broken functionality at one point (the developer says it has since been fixed).
• Coding-only. It is built for technical screens. If you also have behavioral rounds, recruiter calls, meetings, or sales calls, you need a second tool.

As always: pricing and features change, so verify the latest details on each vendor's own site before you buy.

The short list

1. Assistly — the best all-around alternative

Assistly is a native desktop app for macOS (Apple silicon, macOS 13+) and Windows 10/11. It is an always-on-top overlay that runs alongside Zoom, Google Meet, Microsoft Teams, Webex, Slack huddles, and phone calls. It is not a notetaker bot — it never joins your call as a participant.

Where Interview Solver is coding-only and trigger-based, Assistly is built for every live conversation and streams guidance token-by-token as people speak.

What stands out:

• Truly real-time. Guidance streams as the conversation happens, with low latency — no manual "answer now" tap required.
• Broader than coding. Job interviews (technical and behavioral), meetings, and sales calls — not just LeetCode screens.
• Multi-speaker context. It separates your voice from others and tracks who said what, which helps on busy group calls.
• Works with headphones on. It captures the call's own audio, not just your mic.
• Truly undetectable — for a specific, verifiable reason. The overlay is excluded from screen capture at the OS level, so it never shows up in a screen share, a recording, or a proctoring tool's frame. It is on your physical screen but withheld from the capture buffer.
• Renamable app + custom icon. You can rename Assistly and swap its icon, so it does not appear as a recognizable assistant in Activity Monitor or Task Manager. That defeats the name-based process scans some proctoring platforms (e.g. HackerRank, Codility) run.
• Personas + knowledge modes. Build a persona from your CV, notes, and docs so answers sound like you, and switch knowledge modes for different situations.
• Customizable hotkeys to show, hide, and drive the overlay.
• Automatic notes and action items after every session.

Pricing is flat and honest. Free gives you 5 sessions/month (capped at 45 minutes each), the full feature set, and no card required. Pro is $14.99/month for unlimited sessions with no time cap. Every feature is included on both plans — there is no separate "undetectability" upsell.

Honest caveats. Audio streams to the cloud, where transcription and inference run — this is not on-device processing. And screen-capture exclusion is real but conditional: newer macOS capture paths (ScreenCaptureKit on macOS 15+) can composite visible windows before capture, so invisibility depends on how current a tool stays with OS updates. We keep ours current, but no overlay should be sold as a magic constant. You control data retention and can delete sessions and notes anytime.

If you want the deep side-by-side, see our Assistly vs Interview Solver breakdown.

2. LockedIn AI — if you specifically want live coding

LockedIn AI is a real-time interview and meeting copilot for macOS and Windows (beta), with a Chrome extension. Reported pricing is around $49.99/month (down to ~$29.99 quarterly), with a lifetime tier up to ~$1,499.

Genuine strength: strong live coding support is the most consistent praise.

Attributed weaknesses: Trustpilot and other reviewers report a 4–5 second "latency stare" before answers, generic GPT-style responses, and refund/cancellation complaints. The browser extension is reportedly visible on screen share, and reviewers note it can be detected via process-list scans on HackerRank and Codility.

3. Cluely — the biggest brand

Cluely is the most recognizable name in this space (a16z-backed). It is a real-time overlay for macOS, Windows, and iOS, and it goes broad: sales, meetings, and interviews, plus CRM and enterprise features. Reported pricing spans a Free tier (~5 AI responses/day), Pro at ~$20/mo, "Pro + Undetectability" at ~$149.99/mo, and Enterprise at ~$200/seat.

Genuine strength: the broadest feature surface and the most mindshare.

Attributed weaknesses: the undetectable feature is gated to the ~$149.99/mo tier. Trustpilot sits around 1.8/5, dominated by billing, refund, and cancellation complaints. Independent tests measured 5–10s+ latency against an advertised ~300ms, and reviewers report it being flagged within seconds on CoderPad and HackerRank. In March 2026, founder Roy Lee told TechCrunch that a prior $7M ARR figure was fabricated.

4. Final Round AI — if you want mock-interview practice

Final Round AI is an all-in-one job-search suite: a live "Interview Copilot," AI mock interviews, a résumé builder, and auto-apply. It runs as a web app, a Chrome extension, and a macOS/Windows "Stealth" desktop app. Reported pricing is around $99–$149/month monthly, ~$500/year, with add-ons extra.

Genuine strength: the mock-interview practice is well praised — useful if you want to rehearse, not just get live help.

Attributed weaknesses: Trustpilot reviewers report difficulty cancelling and rebilling after cancellation, refunds denied despite an advertised "3-day guarantee," and aggressive trial auto-charges. The live Copilot is described as generic and laggy and reportedly stops mid-interview at times, and the browser version is detectable on screen share.

5. Ultracode — if coding depth is everything

Ultracode is a coding-interview "undetectable co-pilot" with native Windows and macOS apps, and it earns praise for strong coding and system-design answers via top-tier models. Reported pricing is around $899 one-time "lifetime," though buyers report a volatile $650–$1,799, and it is non-refundable.

Genuine strength: depth on hard coding and system-design questions.

Attributed weaknesses: there are documented "caught" reports on forums — for example, a TeamBlind user caught on a Meta phone screen due to repeated screen-switching, and others flagged on HackerRank with offers withdrawn. Reviewers also report lag, freezes, and crashes; it is non-refundable with refund requests denied; and it is weak for behavioral interviews.

How to choose

• You do more than coding screens (behavioral, meetings, sales) → Assistly.
• You want truly real-time guidance, not a manual trigger → Assistly or Cluely.
• You want to practice before the real thing → Final Round AI's mock interviews.
• You only ever do live coding and want a coding-specialist → LockedIn AI or Ultracode (verify detection and refund terms first).

One more thing worth saying plainly: an undetectable overlay is a tool to help you be prepared and present, not a license to ignore the rules. Use any of these within the rules of the interview, meeting, or call you are in, and respect recording-consent laws. Whether AI is even allowed depends on the employer — some now permit it, some ban it.

If you also looked at Interview Solver because of coding screens, you may be weighing coding-specialist tools too — see our best Interview Coder alternatives roundup, and the full Assistly vs Interview Solver comparison.

Try Assistly free

The fastest way to decide is to run it on a real call. Create a free Assistly account — 5 full-featured sessions a month, no card required — and upgrade to Pro at $14.99/month only if you want unlimited.