web-naisen Review, Pricing & Features

WEB内線 lets website visitors make browser-based voice calls to your team with no phone number needed. See pricing (from ¥0/month), features, and use cases for…

Category
Communication
Pricing
Freemium: Free ¥0/mo (1 seat), Standard ¥3,000/mo (3 seats), Business ¥9,800/mo (10 seats), Enterprise custom quote.
Verified
Not yet
Last updated
August 5, 2026
SaaSFree PlanSMBSubscriptionBrowser Based

WEB内線 ("Web Naisen", literally "Web internal line") is a browser-based voice-call reception widget that Japanese businesses embed on their websites. Instead of publishing a phone number, a site owner installs a single call button; when a visitor clicks it, the call rings in the business's browser dashboard, where staff answer using their computer's microphone and speaker — no phone number is exchanged on either end. The vendor documents a four-step setup: install the button, receive the incoming call in-browser, talk via mic/speaker, and save notes and call history to a dashboard. Unanswered calls fall back to voicemail (留守電), with retention ranging from 1 day on the Free plan to 30 days on the Business plan. The product is aimed at Japanese SMBs and is marketed around six use cases: professional-service firms (law/accounting), storefront and retail businesses confirming visit availability, real-estate/renovation consultations, recruitment sites fielding candidate questions, hotels/facilities for guest-to-staff communication, and events/exhibitions where staff are paged via QR code. Paid plans add Slack and Chatwork notifications so teams see incoming calls in the chat tools they already use. Signup is self-serve via a free member registration flow, with a live demo call page available to try the experience before signing up.

Key Features

Pros & Cons

Pros

  • Free tier (¥0/month) with no setup fee lets small sites trial browser-based voice reception before committing to a paid plan.
  • Visitors can reach staff without knowing or dialing a phone number, lowering friction for pre-sale or pre-visit questions.
  • Standard plan and above add Slack and Chatwork notifications, so teams are alerted to incoming calls inside tools they already use.
  • Documented across six distinct verticals (professional services, retail, real estate, recruitment, hospitality, events), suggesting a flexible, general-purpose widget rather than a single-niche tool.

Cons

  • The product is Japanese-language only (html lang="ja") with no evidence of an English interface, limiting its addressable market.
  • No operator/company legal name, address, or business registration details are published on the homepage, terms of service, or privacy policy — unusual for a paid Japanese SaaS product.
  • No public API, CRM, or website-builder integrations are documented — only Slack and Chatwork notifications are mentioned.
  • Enterprise pricing is a black-box custom quote with no published starting price or SLA detail beyond multi-domain/multi-location support.

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