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TwinPhoneTwinPhone

海外に電話する、いちばん格安な方法。暗号化されてシンプル、どんな回線でも使えます。アプリもSIMも契約も不要。

プロダクト

  • 料金
  • バーチャル番号
  • 2つ目の電話番号
  • エンタープライズ
  • 国番号
  • アプリ認証用の番号

ユースケース

  • ビジネス用の2つ目の番号
  • 旅行中の通話
  • 電話番号認証
  • オンラインデートのプライバシー
  • リモートワーク
  • オンライン販売
  • プライバシー通話
  • 海外留学
  • 海外在住者の通話
  • Skypeの代わり

リソース

  • ブログ
  • 比較
  • ヘルプセンター
  • ブラウザ通話のしくみ
  • 無料の国際電話
  • VoIP選びのガイド
  • Google Voiceの代わり
  • サポート電話番号
  • 国別の無料国際電話

会社情報

  • 会社について
  • お問い合わせ
  • プライバシーポリシー
  • 利用規約

人気の発信先

  • Angolaへの格安通話
  • バングラデシュへの格安通話
  • コロンビアへの格安通話
  • Dominican Republicへの格安通話
  • エジプトへの格安通話
  • エチオピアへの格安通話
  • ガーナへの格安通話
  • Guatemalaへの格安通話
  • Haitiへの格安通話
  • インドへの格安通話
  • ケニアへの格安通話
  • メキシコへの格安通話
  • モロッコへの格安通話
  • Nepalへの格安通話
  • ナイジェリアへの格安通話
  • パキスタンへの格安通話
  • フィリピンへの格安通話
  • ポーランドへの格安通話
  • ロシアへの格安通話
  • セネガルへの格安通話
  • Sri Lankaへの格安通話
  • トルコへの格安通話
  • ウクライナへの格安通話
  • Zimbabweへの格安通話
  • 145か国以上すべて → →

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All ComparisonsComparison

RingCentral vs TwinPhone 2026: From $0.02/min, No Seat Fees

RingCentral is one of the biggest names in business communications — a full unified communications platform with video, messaging, phone, and dozens of integrations. TwinPhone is a browser-based calling service focused on cheap international calls with transparent per-minute pricing. They serve different audiences, but if international calling costs are eating your budget, the comparison matters more than you think. Here is an honest breakdown of both services in 2026.

Feature-by-Feature Comparison

FeatureRingCentralTwinPhone
Pricing model$30/user/mo (Core plan)Pay-as-you-go, from $0.02/min
International ratesExpensive add-on bundlesFrom $0.02/min, billed per minute
CRM integrationSalesforce, HubSpot, 300+ appsCSV export today; native CRM sync on the roadmap
Call encryptionTLS + SRTPTLS + SRTP
Virtual numbers100+ countries (included in plan)US & Canada from $1.60/mo
Call recordingIncluded on higher plansNo
Pay-as-you-go (no per-seat subscription)No ($30/user/mo seat fee)Yes (no monthly fee)
Free trial14-day trialStart from $5
App requiredDesktop + mobile appsNo (browser-based)
Best forEnterprise teams with CRM needsInternational calling, small teams, freelancers

RingCentral Overview: The Enterprise All-in-One

RingCentral MVP (now RingCentral RingEX) is a unified communications platform that bundles phone, video, messaging, and fax into a single product. It is designed for businesses that want one vendor for everything.

The platform is genuinely impressive in scope. Native integrations with Salesforce, HubSpot, Zendesk, and over 300 other apps mean your team can click-to-call from a CRM record and have the call logged automatically. Video meetings support up to 200 participants. Team messaging works like a lightweight Slack replacement. Admin controls let you manage call routing, IVR menus, and analytics from a central dashboard.

Reliability is a strong point — RingCentral publishes a 99.999% uptime SLA, which is among the best in the industry. Call quality on domestic calls is consistently good, and their global network spans data centers on every continent.

The catch is cost. The Core plan starts at $30/user/month (billed annually — it is $35 month-to-month). That gets you unlimited domestic calling in the US and Canada, 100 toll-free minutes, and basic integrations. International calling costs extra. You either buy add-on bundles or pay per-minute rates that range from reasonable (UK landline around $0.04/min) to steep (mobile numbers in Africa or Southeast Asia at $0.30+/min). For a company that makes a lot of international calls, those add-on costs can quietly double the bill.

RingCentral also requires installing desktop and mobile applications. The web client exists but is limited compared to the native apps. For IT departments, that means managing another piece of software across the organization.

TwinPhone Overview: Browser-Based International Calling

TwinPhone takes the opposite approach to RingCentral. Instead of building an everything-platform, it focuses on one thing: making calls to real phone numbers, internationally, at the lowest possible cost.

There is no app to install. Open a Chromium-based browser — Chrome, Edge, Brave — type a number, and call. Every call is encrypted with TLS (signaling) and SRTP (media). Rates start at $0.02/min, billed per minute, and the exact per-minute rate is shown before every call connects — with no connection fees and no hidden charges. Virtual numbers are available in the US and Canada starting at $1.60/month, letting you show a local caller ID in London, Tokyo, Sao Paulo, or wherever your contacts are.

TwinPhone does not have CRM integrations, video conferencing, or team messaging. It does not try to replace your entire communications stack. What it does offer is transparent pricing with no monthly seat fees, adaptive audio that handles poor Wi-Fi connections, and rates from $0.02/min with no monthly commitment.

For teams that already use Slack or Teams for messaging and Zoom or Google Meet for video, adding RingCentral duplicates functionality you already have. TwinPhone slots into that stack as the calling layer without overlap. You can read more about how VoIP fits into modern sales workflows at /blog/best-voip-for-sales-teams.

Pricing Comparison: What Does It Actually Cost?

Let us run the numbers for three team sizes. We will assume each person makes 500 minutes of calls per month, with 40% of those being international (200 minutes international, 300 minutes domestic). Average international rate: $0.08/min on RingCentral, $0.04/min on TwinPhone.

5-person team: RingCentral: 5 x $30/mo = $150 base + ~$80 international add-on = $230/month TwinPhone: 5 x (300 domestic x $0.02 + 200 intl x $0.04) = 5 x $14 = $70/month + virtual numbers if needed

25-person team: RingCentral: 25 x $30/mo = $750 base + ~$400 international = $1,150/month TwinPhone: 25 x $14 = $350/month + virtual numbers

100-person team: RingCentral: 100 x $30/mo = $3,000 base + ~$1,600 international = $4,600/month TwinPhone: 100 x $14 = $1,400/month + virtual numbers

These numbers shift depending on your call mix. If 90% of your calls are domestic US, RingCentral's unlimited domestic plan absorbs most of the cost, and the per-user fee becomes more competitive. If international calling is a significant portion of your usage — sales teams calling EMEA, support teams handling APAC, diaspora communities calling home — TwinPhone saves thousands per month at scale.

It is worth noting that RingCentral's pricing includes video, messaging, and integrations. If you are already paying separately for Zoom ($13.33/user/mo) and Slack ($8.75/user/mo), RingCentral's bundled price can actually save money. TwinPhone does not compete on that axis — it is purely a calling service. Check our full rate card at /rates.

Who Should Use RingCentral

RingCentral is the right choice if your team needs a single platform for phone, video, messaging, and CRM integration. Specifically:

  • Sales teams using Salesforce or HubSpot who need automatic call logging, click-to-dial, and call analytics tied to deal pipelines. RingCentral's native CRM integrations are genuinely best-in-class.
  • Mid-size companies (50+ employees) that want to consolidate vendors. One bill, one admin console, one support line.
  • Teams that rely on IVR menus, call queues, and auto-attendants for customer-facing support lines.
  • Organizations with compliance requirements that need SOC 2 Type II, HIPAA BAA, and detailed audit logs.

RingCentral's enterprise features are real — this is not a case where the expensive option is just marketing. The platform is genuinely more capable for internal team communication and CRM workflow automation. For a comparison with another enterprise VoIP, see our Dialpad vs TwinPhone breakdown.

Who Should Use TwinPhone

TwinPhone is the right choice if your primary need is making affordable calls to real phone numbers, especially internationally. Specifically:

  • Freelancers and solopreneurs who do not need a $30/month platform — just a way to call clients abroad without a massive phone bill.
  • Remote teams spread across countries where international calling is the norm, not the exception. Transparent per-minute rates with no monthly seat fees add up to significant savings.
  • Sales teams focused on outbound international calling who already have a CRM and messaging tool and just need a cost-effective dialer.
  • Immigrant and diaspora communities calling family in home countries regularly. No subscription, no minimums — top up $10 and call when you need to.
  • Travelers and digital nomads who need a local number in the country they are visiting without buying a SIM card. Virtual numbers in the US and Canada start at $1.60/month (more countries coming).

TwinPhone does not try to be your company's communications platform. It is the piece of infrastructure that handles calling at a fraction of what enterprise VoIP charges. For more on international calling costs, see our Vonage vs TwinPhone comparison.

Related Resources

  • Best VoIP for Sales Teams →
  • How to Call India from the US →
  • Cheap Calls to India →
  • Dialpad vs TwinPhone →
  • Vonage vs TwinPhone →
  • All Calling Rates →

See for yourself

No subscription, no app needed — just open your browser and dial. Rates from $0.02/min.

Try TwinPhone

Common Questions

What people ask about RingCentral vs TwinPhone.

RingCentral's international rates are higher than dedicated calling services. If international calling is a major part of your usage, you may save significantly with TwinPhone's pay-as-you-go model. RingCentral is better justified when you need the full UCaaS platform — video, messaging, CRM integration — not just voice.

Not yet — native Salesforce sync is on our roadmap. Today you can export your full call log to CSV. If automatic call logging in Salesforce is critical to your workflow right now, RingCentral has the edge here.

RingCentral charges a per-seat subscription (from $30/user/month) and bills international calls per minute on top, often through opaque add-on bundles. TwinPhone has no subscription and no per-seat fee: it's pay-as-you-go billed per minute, with the exact per-minute rate shown before every call connects and no hidden charges.

Both services use TLS for signaling and SRTP for media encryption, so call security is comparable. RingCentral adds enterprise compliance certifications (SOC 2, HIPAA) that matter for regulated industries.

Yes. Some teams use RingCentral for internal communication and CRM-integrated domestic calling, then route international calls through TwinPhone to save on per-minute costs. There is no conflict — TwinPhone runs in the browser independently.

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View all 11 comparisons →
TwinPhone browser calling interface

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