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料金バーチャル番号エンタープライズ比較ユースケースブログeSIM
料金バーチャル番号エンタープライズ比較ユースケースブログeSIM
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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 → →

© 2026 TwinPhone. All rights reserved.

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プライバシー利用規約CookieImpressum不正利用の報告法執行機関の方へ個人情報を販売しない
All ComparisonsComparison

Google Voice vs Skype vs TwinPhone — 2026 Comparison

Skype was the king of cheap international calls for over a decade. Google Voice offered a free alternative for US users. Both are now in transition — Skype shut down in 2025, and Google Voice remains US-only. Here's how they compare to TwinPhone in 2026.

Feature-by-Feature Comparison

FeatureGoogle VoiceSkype (Teams)TwinPhone
AvailabilityUS onlyDiscontinued (Teams now)Worldwide
Rates from$0.01/min$0.012/min (via Teams)$0.02/min
Free domestic callsUS/Canada onlyNoNo
App requiredNo (web)Yes (Teams)No (browser)
Call encryptionStandardStandardTLS + SRTP
Virtual numbersUS only (free)NoUS & Canada ($1.60+)
Call recordingBasicWith Teams planNo
Team featuresGoogle WorkspaceFull Teams suiteShared wallets + analytics
Works on bad Wi-FiAverageAverageAdaptive audio
Free trialFree US callsNoStart from $5

Google Voice: Free US Calls, Limited Internationally

Google Voice is a solid free option if you live in the US and primarily call US and Canada numbers. International rates exist but aren't competitive — popular destinations like India mobile and Philippines mobile cost significantly more than dedicated international calling services.

The biggest limitation: you need a US phone number to sign up, and virtual numbers are only available in the US. If you're outside the US or need to show local numbers in other countries, Google Voice can't help.

Skype Is Dead — Long Live... Teams?

Microsoft shut down Skype in May 2025 and pushed users to Teams. While Teams technically supports PSTN calling, it's designed for enterprise video meetings, not cheap international calls. The interface is cluttered, pricing requires a Microsoft 365 subscription plus a calling plan, and the entire experience feels like using a firehose to water a plant.

If you're a business already paying for Microsoft 365, Teams calling might make sense. For everyone else, it's overkill.

TwinPhone: Built for International Calls

TwinPhone focuses on one thing: making international calls cheap, simple, and secure. No bloated software, no ecosystem lock-in, no monthly subscriptions.

Open your browser, dial a number, pay per minute. Every call encrypted. Works on slow Wi-Fi. Virtual numbers in the US and Canada. That's it.

The pay-as-you-go model means you only spend money when you actually call. $10 of credit can last weeks or months depending on your usage.

Related Resources

  • 10 Best Skype Alternatives in 2026 →
  • Google Voice Alternatives for International Calling →
  • Google Voice vs TwinPhone — Direct Comparison →
  • 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 Google Voice vs Skype (Teams) vs TwinPhone.

Microsoft migrated Skype users to Teams, but for simple international calls, TwinPhone is a better replacement — cheaper rates, simpler interface, no subscription required.

No. Google Voice only offers free calls to US and Canada. International calls are charged per minute at rates that are often higher than dedicated services like TwinPhone.

TwinPhone uses adaptive audio that adjusts to your connection quality, maintaining stable calls even on slow Wi-Fi. Google Voice and Teams rely on standard VoIP without specialized optimization for poor connections.

Related Comparisons

Comparison

Google Voice Alternative 2026: Call Abroad From $0.02/min

Google Voice is US-only. Here's how TwinPhone offers a global alternative with lower rates.

Read comparison →
Comparison

Skype Is Dead — 5 Best Alternatives That Work

Skype shut down in May 2025. Here are the 5 best replacements for international calling, tested and compared for 2026.

Read comparison →
Comparison

WhatsApp vs Viber vs TwinPhone 2026: Call Real Numbers

App-to-app calls are free, but what about calling real phone numbers? A detailed comparison.

Read comparison →
Comparison

TwinPhone vs Rebtel 2026 — Cheaper International Calls?

Two popular international calling services compared side-by-side on price, features, and ease of use.

Read comparison →
View all 11 comparisons →
TwinPhone browser calling interface

Ready to switch?

From $0.02/min. Encrypted. Works on any connection. Start from just $5.

Try Now

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