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Measured on six things

Find similar YouTube channels with AI-powered look-alike search. Discover creators from one channel URL or @handle, compare key metrics, and review public business emails and social links for outreach. Available on the web and as a Chrome extension on YouTube.

Security

HTTPS is enforced, but the header probe found no HSTS, CSP, frame protection, or Referrer-Policy, and DMARC is missing. No SOC 2, ISO, or bug bounty claims surfaced.

Screenshots

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SimilarTube

About this app

SimilarTube is an AI-powered YouTube channel finder for brands/SaaS founders, marketers, agencies, partnership teams, and creators. Paste a YouTube channel URL or @handle to find related channels by content, niche, and audience—without building a giant keyword list. Review channel metrics (subscribers, views, engagement rate, video view rate), extract publicly listed business emails and linked social accounts where available, organize prospects with Saved Lists, and continue research in the SimilarTube Chrome extension while browsing YouTube. (1) AI look-alike / similar YouTube channel search from a channel URL or @handle (2) Key metrics: subscribers, views, engagement rate (ER), video view rate (VVR) (3) Extract public business emails and linked social accounts where available (4) Saved Lists with favorites, blocking, folders, and labels (5) Chrome extension for real-time look-alike search on YouTube. Free trial: 10 limited free searches every 24 hours (email matching not included).

Key features

1AI look-alike channel search from a channel URL or @handle
2Channel metrics: subscribers, views, engagement rate, video view rate
3Public business email and linked social account extraction
4Saved Lists with favorites, blocking, folders, and labels
5Chrome extension for real-time look-alike search on YouTube

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

Brands and marketers finding YouTube influencers for campaigns

Pain points

Spending hours manually searching for relevant creators and verifying contact info

Primary needs

Quickly find similar channels, compare key metrics, and review public business emails for outreach

Demographic

Agencies and researchers building creator and sales lead lists

Pain points

Building targeted lead lists from scratch and keeping up with new creators

Primary needs

Discover niche channels, extract public contacts, and organize prospects with Saved Lists

Demographic

YouTubers exploring competitors and niches

Pain points

Running out of fresh channels and relying on repetitive recommendations

Primary needs

Explore adjacent niches and find new creators similar to ones they already follow

Scout Review

Written by AI from measured evidence, scored out of 100.

SimilarTube is a focused, fast tool for a real job: paste a YouTube channel, get AI-matched look-alikes, check metrics, and pull public business emails for outreach. The homepage is clear and the trial is usable, but the design is template-grade with readability issues, the security headers are thin for a product handling contact data, and the differentiation leans heavily on the paywalled email feature. It's a competent indie tool with a specific wedge — not yet a category leader.

Measure by measure

Usability

Hero search is immediately actionable, and numbered steps plus a comparison table explain the flow well. The 10-free-searches-per-day trial is a reasonable hook, though email matching is paywalled.

Design

Clean purple brand and a clear hero input, but the layout is a familiar SaaS template with pale grey body text and tiny mock-UI labels that undercut readability.

Speed

Lighthouse mobile 88/100 (LCP 2.4s, CLS 0, TBT 162ms) and desktop 81/100 — a genuinely snappy site with no layout shift and no lag complaints found.

Security

HTTPS is enforced, but the header probe found no HSTS, CSP, frame protection, or Referrer-Policy, and DMARC is missing. No SOC 2, ISO, or bug bounty claims surfaced.

Accessibility

Lighthouse accessibility scores 97/100, but two real failures remain: insufficient color contrast and visible text labels not matching accessible names. No a11y statement or multi-language support found.

Growth

A real problem — finding look-alike YouTube channels without keyword guesswork — with a specific wedge (AI similarity + public emails) aimed at brands and agencies. Differentiated, but the category has free incumbents.

Improvement areas

Security headers (CSP, HSTS, DMARC) missing for a lead-gen tool
Color contrast and accessible-name failures in the UI
Email matching paywalled behind the trial
Template-grade design with illegible mock UI

Design & Usability

SimilarTube's homepage does the one thing that matters: it puts a channel-URL input directly under the headline, so you can act before you scroll. The numbered 01/02/03 flow and the comparison table against manual search and static directories explain the product without a wall of text. Where it slips is craft — the four-card feature grid with emoji icons is a template you've seen a hundred times, the mock UI windows are rendered so small the product's value is illegible at a glance, and the pale grey body text on white and lavender is a readability tax on every section. Usability is the stronger half: the trial gives 10 free searches per day, which is enough to feel the product, though the email matching that makes it useful for outreach sits behind the paywall.

Speed & Security

Speed is a genuine strength. Lighthouse mobile scores 88/100 with LCP 2.4s, CLS 0, and TBT 162ms; desktop lands at 81/100. There's no layout shift, no heavy SPA bloat, and no lag complaints in the collected evidence — the site loads before you can second-guess the search. Security is the weak flank. HTTPS is enforced, but the header probe found no HSTS, no CSP, no frame protection, no X-Content-Type-Options, no Referrer-Policy, and no Permissions-Policy — a 3/12 checklist. SPF is present but DMARC is missing, which leaves the domain open to spoofing. No SOC 2, ISO, pen-test, or bug bounty claims surfaced. For a tool that handles prospect emails and business contacts, that's a gap worth closing before agencies trust it with lead lists.

Accessibility & Growth

Accessibility is close to strong: Lighthouse scores 97/100, but two real failures remain — insufficient color contrast (the grey-on-lavender body text) and visible text labels that don't match accessible names. No a11y statement or multi-language support was found, so the automated score is doing most of the work. Growth is a judgement on the idea: finding look-alike YouTube channels from one example is a real, specific problem for brands, agencies, and partnership teams, and the AI-similarity-plus-public-email wedge is concrete. The limit is the competitive set — Channel Crawler offers free broad discovery and TubeBuddy owns creator analytics — so SimilarTube's differentiation rests on the email extraction and Saved Lists, which is a narrow but defensible lane. It can grow, but it needs to win the outreach workflow, not just the discovery step.

Conclusion

If you're a marketer or agency tired of keyword-guessing your way to YouTube creators, SimilarTube's one-channel-in, look-alikes-out flow is worth the 10 free daily searches. Go in expecting to pay for the email extraction that makes it an outreach tool rather than just a discovery toy, and keep your prospect lists in your own CRM until the security posture matures. It's early, it's fast, and the idea is sound — the execution just needs another pass on craft and trust signals.

Suggestions for improvement

Fix the color contrast on body and caption text — grey on lavender fails WCAG and hurts readability.
Add HSTS, CSP, frame protection, and DMARC before asking agencies to trust you with lead data.
Enlarge the mock UI windows so the product's actual value is legible at a glance.
Publish an accessibility statement and fix the accessible-name mismatches flagged by Lighthouse.

How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

	SimilarTube	Channel Crawler	TubeBuddy
Search method	Paste a channel URL or @handle for AI look-alike matches	Filter by category, language, subscriber count	Keyword and channel search within creator analytics suite
Contact extraction	Public business emails and linked socials (paid)	Not a core feature	Limited; focused on creator optimization
Free tier	10 limited searches per 24 hours, no email matching	Free tool	Free tier with limited features
Chrome extension	Yes — real-time look-alike search on YouTube	No	Yes — YouTube optimization extension
Primary audience	Brands, agencies, partnership teams finding influencers	Broad channel discovery and research	YouTube creators optimizing their own channels