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Compare 오픈타임 vs 300cbt

Side-by-side comparison of features, pricing, services, ratings and more.

Winner
오픈타임 Agency logo

오픈타임

SEO & Organic Growth Website

Open Time is a specialized GEO and AI search optimization agency based in Busan, South Korea. They help Korean professionals and B2B service companies achieve accurate discovery and citation in global AI search environments like ChatGPT, Perplexity, and Naver AI Briefing using their proprietary K-GEO methodology.

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300cbt Agency logo

300cbt

Cold Email Outreach Website

300cbt is a Shopify-specialized development agency based in Seoul, helping direct-to-consumer (D2C) brands scale globally through strategic design, development, and marketing. Since 2017, the agency has launched over 350 Shopify stores and worked across 30+ countries. The agency focuses exclusively on Shopify, offering services such as custom store development, app integration, and eCommerce consulting.

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Feature Comparison

Attribute 오픈타임 300cbt
Category SEO & Organic Growth Cold Email Outreach
Rating
Winner +4.4 higher
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Location Busan, Busan, South Korea Seoul, South Korea
Services
  • AI Search Optimization
  • LLM optimization
  • Branding
  • Brand Strategy
  • SEO
  • Backlink Management
  • SEO Consulting
  • Search Engine Marketing
  • Wordpress SEO
  • eCommerce Development
  • Email Marketing
  • Social Media Marketing
  • Web Development
  • Web Design
  • AI Search Optimization
  • LLM optimization
  • Branding
  • Brand Strategy
  • SEO
  • Backlink Management
  • SEO Consulting
  • Search Engine Marketing
  • Wordpress SEO
  • eCommerce Development
  • Email Marketing
  • Social Media Marketing
  • Web Development
  • Web Design
Industries
B2B Services Health & Wellness Healthcare & Hospital
eCommerce Consumer Goods Retail
Pros
  • Specialized in Korean GEO (K-GEO) methodology for AI search optimization
  • Provides a free AI search visibility diagnostic tool that checks global top 5 engines and Naver AI Briefing
  • Over 200 SEO and digital marketing projects experience
  • Covers both global AI engines (ChatGPT, Perplexity, Gemini, Grok, Claude) and Naver AI Briefing
  • Shopify experts since 2017 with over 350 stores launched
  • Worked across 30+ countries for global D2C brands
  • Trusted by major brands including Dior, Blue Bottle Coffee, and Dr. Martens
Cons
  • Small team of 1-9 may limit capacity for large-scale projects
  • Relatively new agency (founded 2023) with limited public client reviews
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Website Visit Site Visit Site
Free Plan Available

You shouldn’t have to overpay for cold email tools. With Mystrika, you won’t.

It does cold email warmup, sequences, unified inbox, and AI writing - all in one place. Every other tool that does this charges somewhere between $100 and $500 a month. Mystrika has a free plan. 500 prospects. No expiry. No card.

The people who consistently book meetings from cold email aren’t smarter. They just stopped leaving money on the table.

See the Free Plan