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MullvadとOyster VPN:2026年における速度とセキュリティの比較

執筆者 | Last updated May 3, 2026

勝者
マルヴァドのロゴ
4.3
  • 登録にメールアドレスは不要です
  • 複数の独立監査
  • RAMのみのサーバー
  • Fully Open-Source Apps
  • 現金で支払うか、 暗号
  • Flat €5/mo Since 2009
  • 有料プランは月額5ユーロから
準優勝
OysterVPNロゴ
3.8
  • 生涯アクセス権が59.99ドル
  • AES-256暗号化
  • 専用ストリーミングサーバー
  • Windows/Android でのスプリットトンネル
  • 広告とマルウェアのブロッカー内蔵
  • 30日間返金保証
  • 有料プランは月額2.50ドルから

⚡ Quick Verdict:

  • 価格: Mullvad charges a flat €5/mo (~$5.50). OysterVPN starts at $2.50/mo on the yearly plan, with a $59.99 lifetime deal.
  • 最適な用途: Mullvad for privacy-first users who want audited security. OysterVPN for budget users who need basic VPN 保護。
  • 主な違い: Mullvad has open-source apps and multiple independent audits. OysterVPN has no third-party 監査.
  • Our pick: Mullvad for most users — proven privacy with transparent pricing and verified no-logs policy.
Mullvad vs Oyster VPN Comparison

Privacy and price pull VPN buyers in two different directions.

Mullvad VPN doesn’t even ask for your email address.

OysterVPN offers lifetime access for under $60.

Both VPN providers claim to protect your internet connection.

しかし、彼らはそこに至るために全く異なるアプローチを取る。

This comparison breaks down which VPN service fits your needs.

概要

This Mullvad vs Oyster VPN comparison covers pricing, privacy features, and server networks.

We also break down streaming, speed, and ease of use for both VPN apps.

Our sources include published specs, official documentation, and user reviews.

By the end, you’ll know which VPN provider fits your needs.

Mullvadとは何ですか?

Mullvadは、スウェーデンを拠点とするプライバシー重視のVPNサービスです。

It encrypts your internet connection and hides your true IP address.

You don’t need an email address or personal info to sign up.

その代わりに、Mullvadは各ユーザーに対して固有の16桁のアカウント番号を生成します。

The VPN apps are fully open-source and have been audited multiple times.

Mullvad VPNレビュー|Mullvadは評判通り本当に優れているのか?

マルヴァドVPN

Mullvad keeps zero logs and requires zero personal data. Pay with cash or crypto for total anonymity. Flat €5/mo pricing has stayed the same since 2009.

Mullvad の価格設定

Mullvad’s pricing is the simplest in the VPN market. One flat rate. No discounts. No tiers.

プラン価格最適な用途
1ヶ月月額5ユーロ短期的なプライバシーニーズ
1年月額5ユーロLong-term users wanting simplicity
10年月額5ユーロMaximum commitment at the same rate

Pricing verified May 2026.

無題のデザイン 1 19

無料トライアル: 無料トライアルはありません。代わりに、Mullvadは14日間の返金保証を提供しています。

返金保証: ほとんどの支払い方法で14日間。現金払いは対象外です。

📌 注記: Mullvad has never raised its price since launching in 2009. You pay the same rate whether you subscribe for one month or ten years. Crypto payments get a 10% discount.

⚠️ 警告: Mullvad does not offer long-term subscription discounts. If you want a cheaper monthly rate, you’ll need to look elsewhere. The tradeoff is total pricing transparency with no surprise renewal hikes.

ムルヴァドの主な利点

Here’s what makes Mullvad worth considering:

  • 匿名登録: No email, no name, no personal data required. Mullvad generates a random account number. You can even pay with cash mailed in an envelope.
  • 監査済みノーログポリシー: Independent auditors have confirmed that Mullvad stores zero user activity data. The audits cover both the apps and the server infrastructure.
  • オープンソースアプリ: Every Mullvad app is open-source. Anyone can inspect the code for vulnerabilities or backdoors.
  • RAMのみのサーバー: Mullvad’s servers run entirely on RAM. All data is wiped on every reboot, so nothing is stored on disk.
  • WireGuardプロトコル: Mullvad fully transitioned to WireGuard as of January 2026. This protocol is known for fast connection speeds and strong encryption.
  • マルチホップ&ダイタ: Mullvad offers multi-hop routing and DAITA (Defense Against AI-guided Traffic Analysis) for extra privacy layers.
  • 常時オンのキルスイッチ: The VPN kill switch is enabled by default and cannot be turned off. Your IP address stays hidden even if the VPN connection drops.
mullvad ホームページ

What Our Team Noticed

私たちの 作家 signed up for Mullvad and spent several days exploring the platform. Here’s what stood out from that hands-on time:

無題のデザイン 2 7

Mullvadの長所と短所

✅ メリット
  • No personal data required to sign up — total anonymity from day one
  • 複数の独立したセキュリティ監査により、ログなしポリシーが確認された。
  • Open-source apps that anyone can verify for security flaws
  • 2009年以来、更新時の料金値上げは一切なく、定額料金制を維持しています。
  • Accepts cash and cryptocurrency for anonymous payments
❌ デメリット
  • Smaller server network with around 690 servers in 44 countries
  • Poor streaming support — fails to unblock most major platforms
  • 長期契約割引はありません
  • Customer support limited to email only — no live chat

OysterVPNとは何ですか?

OysterVPN is a budget-friendly VPN provider based in Ireland.

インターネット通信を暗号化し、IPアドレスを隠します。

The service supports multiple VPN protocols including オープンVPN および IKEv2。

OysterVPN stands out for its $59.99 lifetime access deal.

It also includes dedicated streaming servers and a built-in ad blocker.

OysterVPNレビュー&永久ライセンス特典|究極のオンラインプライバシーを実現する安全なブラウジングとグローバルアクセス

オイスターVPN

OysterVPN offers lifetime access for a one-time $59.99 payment. It covers up to five devices simultaneously with AES-256 encryption and a no-logs policy.

OysterVPNの価格設定

OysterVPN has three payment options. The lifetime deal is the main draw.

プラン価格最適な用途
1ヶ月+2ヶ月無料月額5.99ドル実行前に簡単なテストを行ってください
1年年間29.99ドル(月額2.50ドル)Annual users on a tight budget
生涯アクセス59.99ドル(1回限り)Long-term users wanting no renewals

Pricing verified May 2026.

Oyster VPNの料金

無料トライアル: No free trial or free plan. You must purchase an OysterVPN subscription to test the service.

返金保証: All plans are backed by a 30-day money-back guarantee.

📌 注記: The 1-year plan includes a free パスワードマネージャー. The lifetime plan bundles 1 TB of encrypted cloud storage with FolderFort for the first year.

⚠️ 警告: OysterVPN only accepts major credit cards and PayPal. No cryptocurrency payment is available. Lifetime plans depend on the company staying in 仕事 長期的に。

OysterVPNの主な利点

Here’s what makes OysterVPN worth considering:

  • 生涯アクセス権付きプラン: Pay $59.99 once and use OysterVPN forever. No monthly bills or annual renewals.
  • 専用ストリーミングサーバー: OysterVPN has special servers for unblocking Netflix, BBC iPlayer, and other streaming services.
  • 全サーバーでP2P接続が可能: Every OysterVPN server supports torrenting. No need to hunt for specific P2P server locations.
  • スプリットトンネリング: The split tunneling feature lets you choose which apps use the VPN connection and which don’t. Available on Windows and アンドロイド.
  • 広告&マルウェアブロッカー: OysterVPN includes a built-in blocker that stops ads and blocks malicious websites.
  • アイルランドを拠点としています。 Ireland is outside the 5/9/14 Eyes intelligence alliances. This offers some jurisdictional privacy advantages.
オイスターVPNホームページ

What Our Team Noticed

Our writer signed up for OysterVPN and spent time testing the apps across devices. Here’s what stood out:

Oyster VPNの個人的な体験談

OysterVPNのメリットとデメリット

✅ メリット
  • Lifetime access for $59.99 — no recurring fees ever
  • Dedicated streaming servers for Netflix, BBC iPlayer, and more
  • Torrenting allowed on all servers with P2P support
  • 全プランに30日間返金保証付き
❌ デメリット
  • ログなしポリシーに関する独立監査は実施されていない。
  • Small server network with roughly 150-400 servers in 17-35 countries
  • 遠隔サーバーでは速度が大幅に低下し、最大55%遅くなる。
  • No native Linux app, no smart TV or gaming console support

機能比較

Let’s compare Mullvad VPN and OysterVPN across 10 key features. Each section explains how both VPN providers handle the feature differently.

特徴マルヴァドオイスターVPN
開始価格月額5ユーロ(約5.50ドル)月額2.50ドル(年間契約)
無料プラン
独立監査✅ 複数回の監査❌ 監査未実施
オープンソースアプリ
キルスイッチ✅ 常時接続
スプリットトンネリング✅ Windows & Android
ストリーミングサーバー❌ No dedicated✅ US & UK servers
サーバーネットワーク~690 in 44 countries~150-400 in 17-35 countries
匿名登録✅ メールアドレスは不要です❌ メールアドレスは必須です
最適な用途プライバシーを最優先するユーザーBudget users & streamers

1. プライバシーと匿名性

マルヴァド: Mullvad does not require an email address, name, or any personal information to create an account. It generates a random 16-digit account number instead. You can pay with cash mailed in an envelope, cryptocurrency, or gift cards. This makes Mullvad one of the few VPN services where your identity stays completely separate from your account.

Mullvad VPN初心者向けチュートリアル

オイスターVPN: OysterVPN requires a standard email-based signup process. Payment methods are limited to major credit cards and PayPal. There are no cryptocurrency options. OysterVPN claims a strict no logs policy, but it has not undergone a third-party independent audit to verify that claim. This is a gap compared to other vpns that have been audited.

2. セキュリティ機能

マルヴァド: Mullvad uses WireGuard as its only VPN protocol after retiring OpenVPN in January 2026. The VPN tunnel is designed to be quantum-resistant. Mullvad includes multi-hop routing, DAITA for traffic analysis defense, and a kill switch that is always enabled. DNS leak protection routes all DNS requests through the encrypted tunnel.

オイスターVPN: OysterVPN uses AES-256 encryption and supports multiple VPN protocols including OpenVPN and IKEv2. It includes a kill switch, DNS leak protection, and IP leak protection to prevent accidental data leaks. OysterVPN also offers DDoS protection. The split tunneling feature lets you route specific apps outside the VPN tunnel.

Oyster VPNのAES 256ビット暗号化

3. サーバーネットワーク

マルヴァド: Mullvad operates around 690 servers across 44 countries. The server network is smaller than major VPN providers like NordVPN or ExpressVPN. However, Mullvad owns many of its servers rather than renting them. All servers are RAM-only, which means data is wiped on every reboot.

MullvadブラウザをMullvad VPNで使用する方法

オイスターVPN: OysterVPN has a relatively small server network with roughly 150 to 400 servers in 17 to 35 countries. Most servers are located in North America and Europe. Coverage in Africa and the Middle East is minimal. All OysterVPN servers are rented, not owned.

4. 接続速度

マルヴァド: Mullvad’s speeds are stable on nearby servers. The WireGuard protocol helps keep speed loss low. According to third-party reviews, the average speed drop is around 13.5% on nearby servers. Performance can drop 40% to 50% on distant servers depending on location.

オイスターVPN: OysterVPN’s speeds are decent on nearby servers. However, download speed can drop by an average of 55% on distant servers. This makes long-distance connections less suitable for streaming 4K content or high-bandwidth activities. Upload speed also suffers over longer distances. A speed test on nearby server locations showed acceptable results for basic browsing.

⚠️ 警告: Both VPN providers experience speed drops on distant servers. If you need consistent global speeds, consider a larger VPN service like NordVPN or ExpressVPN with more server locations.

5. ストリーミングとコンテンツへのアクセス

マルヴァド: Mullvad is not built for streaming. It focuses on privacy over content unblocking. According to recent reviews, Mullvad fails to unblock Netflix, Hulu, Disney+, and BBC iPlayer on most servers. If streaming geo-restricted content is your goal, Mullvad is not the right choice.

オイスターVPN: OysterVPN includes dedicated streaming servers in the US and UK. It can unblock popular streaming services like Netflix, BBC iPlayer, Max, and ESPN+. However, it struggles with Hulu and Disney+. Streaming performance depends on server load and your distance from the server location. The OysterVPN app lets you access geo restricted content from multiple devices.

Oyster VPNのログなしポリシー

6. アプリとデバイスのサポート

マルヴァド: Mullvad has desktop apps and mobile apps for Windows, macOS, Linux, iOS, and Android. The Linux apps are fully supported. Mullvad also offers a dedicated browser called Mullvad Browser. All apps are open-source. You can connect up to five mobile devices or desktops simultaneously.

MullvadブラウザをMullvad VPNで使用する方法

オイスターVPN: OysterVPN supports Windows, macOS, iOS app, and Android app platforms. It also has browser extensions for quick online security. However, it does not support native Linux apps. There is no dedicated app for smart TVs, Android TV, or gaming consoles. The desktop app and mobile apps support up to five simultaneous connections.

7. キルスイッチと漏水防止機能

マルヴァド: Mullvad’s kill switch is always on by default and cannot be disabled. It also has a “Lockdown mode” that blocks all internet connections unless connected to a Mullvad server. DNS requests are routed through the encrypted VPN tunnel to prevent DNS leaks.

オイスターVPN: OysterVPN includes an internet kill switch that blocks all internet traffic if the VPN connection drops. It also prevents IP, DNS, and WebRTC leaks. The kill switch is a standard toggle in the VPN settings — unlike Mullvad, you can turn it on or off.

Oyster VPNのDDoS攻撃対策

8. カスタマーサポート

マルヴァド: Mullvad’s support team is available only through email. There is no live chat or phone support. Response times can be slow. The website has a help section with guides, but it’s designed for users who are comfortable with VPN settings and troubleshooting.

オイスターVPN: OysterVPN offers 24/7 live chat support along with email support. According to recent reviews, the live chat responses are quick. Email responses can take a few hours. The OysterVPN app also has a built-in FAQ section for common questions.

9. トレントとP2P

マルヴァド: Mullvad supports torrenting on all servers. The always-on kill switch protects your IP address if the VPN connection drops during a download. Port forwarding was previously available but has been removed. Mullvad’s audited no-logs policy means your P2P activity is not recorded.

オイスターVPN: OysterVPN allows torrenting on all of its servers. The kill switch prevents IP leaks during downloads. However, OysterVPN’s no-logs policy has not been independently verified. Speeds may slow down on distant servers during large downloads.

Oyster VPN セキュアプロトコル

10. 価格設定とコスト

プランマルヴァドオイスターVPN
毎月月額5ユーロ(約5.50ドル)月額5.99ドル
年間月額5ユーロ(約5.50ドル)年間29.99ドル(月額2.50ドル)
一生❌ 利用できません59.99ドル(1回限り)
返金保証14日間30日間

マルヴァド: Mullvad’s flat €5/month pricing means no surprises. The same rate applies whether you subscribe monthly, yearly, or for a decade. Crypto payments get a 10% discount. There are no promotional prices or renewal hikes.

オイスターVPN: OysterVPN is cheaper on paper, especially with the $2.50/month yearly plan or the $59.99 lifetime deal. However, the lifetime plan depends on OysterVPN staying in 仕事. Only credit cards and PayPal are accepted — no anonymous payment methods.

Oyster VPNのIPリーク保護

さまざまなシナリオ

必要な場合は選ぶなぜ
最大限のプライバシーマルヴァド匿名登録+監査済みログなし
長期的に見て最もコストが低いオイスターVPN生涯契約価格59.99ドル
Streaming supportオイスターVPN専用ストリーミングサーバー
検証済みのセキュリティマルヴァド複数の独立した監査
LinuxサポートマルヴァドFull native Linux apps
ライブチャットサポートオイスターVPN24/7 chat available

💰 あなたの予算

Mullvad costs a flat €5/month with no discounts. OysterVPN’s yearly plan drops to $2.50/month, and the lifetime deal costs $59.99 once. If budget is your top concern, OysterVPN saves more money long-term.

🔌 あなたの技術スタック

Mullvad has full Linux support and works on most operating systems. OysterVPN lacks a native Linux app and has no smart TV or gaming console support. If you use Linux or need wide device coverage, Mullvad is the better pick.

🔒 あなたのプライバシーのニーズ

Mullvad requires zero personal data and accepts anonymous payments. OysterVPN needs an email and only takes credit cards or PayPal. For maximum anonymity, Mullvad is the clear choice.

🎓 あなたの経験レベル

OysterVPN has a simpler user-friendly interface for beginners. Mullvad’s apps are more utilitarian and built for VPN veterans who want full control over VPN settings. Beginners may find OysterVPN easier to set up.

🆓 無料トライアルとデモ

Neither VPN offers a free plan. Mullvad has a 14-day money-back guarantee. OysterVPN gives you 30 days to test the service risk free. If you want a longer trial window, OysterVPN is the better option.

🛟 サポートオプション

Mullvad only offers email support — you cannot contact Mullvad by phone or live chat. OysterVPN provides 24/7 live chat support with quick responses. If fast support matters, OysterVPN wins here.

切り替えガイド

Already using one of these VPN providers? Here’s what to expect if you switch.

🔄 MullvadからOysterVPNに乗り換えますか?

✅ 得られるもの:

  • Dedicated streaming servers for Netflix and BBC iPlayer
  • Split tunneling on Windows and Android apps
  • 24/7 live chat support instead of email-only

❌ 失うもの:

  • Anonymous signup — OysterVPN requires an email address
  • Audited no-logs policy — OysterVPN has no independent audits
  • Open-source apps and Linux support

📋切​​り替え方法:

  1. Cancel your Mullvad subscription (no auto-renewal, just let it expire)
  2. Purchase an OysterVPN subscription and install the OysterVPN app
  3. Uninstall Mullvad and connect to an OysterVPN server
🔄 OysterVPNからMullvadに乗り換えますか?

✅ 得られるもの:

  • Anonymous account with no email or personal data required
  • 独立監査済みのログなしポリシー
  • Open-source apps with full Linux support

❌ 失うもの:

  • Dedicated streaming servers — Mullvad does not focus on content unblocking
  • 分割トンネル機能
  • Lifetime pricing — Mullvad charges €5/month with no long-term discount

📋切​​り替え方法:

  1. 対象となる場合は、30日以内にOysterVPNに返金を請求してください。
  2. Generate a Mullvad account number and choose a payment method
  3. Install the Mullvad app and enter your account number to connect

What Our Review Didn’t Cover

This comparison focused on individual users and small teams. We didn’t test how either VPN performs in restrictive countries like China or UAE. Enterprise features, custom API access, and VPN-compatible router setups weren’t part of this review. Our observations are based on the May 2026 versions of both apps — features may have changed since then.

最終評決

カテゴリ勝者
💰価格オイスターVPN
🔒 プライバシーと匿名性マルヴァド
⚡ スピードマルヴァド
🎬 ストリーミングオイスターVPN
🔌 デバイスサポートマルヴァド
🛟 カスタマーサポートオイスターVPN
🔐 Security Verificationマルヴァド
🏆総合優勝マルヴァド

🏆 優勝者:ムルヴァド

ムルヴァドは7部門中4部門で優勝した。

最適な用途: Privacy-focused users, journalists, developers, and anyone who wants verified no-logs security.

Mullvad and OysterVPN serve very different types of VPN users. Mullvad is built for people who put privacy above everything else. It hides your ip addresses and keeps zero logs. OysterVPN is built for budget-conscious users who want basic protection and streaming access in the VPN market.

OysterVPN’s lifetime deal is hard to beat on price. But its lack of independent audits and smaller server network hold it back from competing with verified VPN providers.

If you need a VPN you can trust with your data, Mullvad is the stronger choice. Its open-source code, audited infrastructure, and anonymous signup process set a high bar for user privacy.

ムルヴァドの比較

Here’s how Mullvad stacks up against other VPN providers:

Mullvad vs NordVPN

ムルヴァドが勝利した理由: Anonymous signup, open-source apps, no personal data collection

NordVPNが優れている点: Server count (7,000+ vs 690), streaming support, long-term pricing discounts

Mullvad vs ExpressVPN

ムルヴァドが勝利した理由: Flat pricing with no renewal hikes, RAM-only servers, cash payment option

ExpressVPNが優れている点: Streaming unblocking across 100+ services, 3,000+ servers in 105 countries, 24/7 live chat

マルヴァド vs プロトンVPN

ムルヴァドが勝利した理由: Simpler pricing (no tiers), no email needed, always-on kill switch

Proton VPNが優れている点: Free plan available, 8,600+ servers in 112 countries, Secure Core routing through privacy-friendly nations

Mullvad vs プライベートインターネットアクセス

ムルヴァドが勝利した理由: Zero personal info required, independently verified no-logs claims, quantum-resistant tunnels

Private Internet Accessが優れている点: Larger server network, split tunneling support, lower long-term pricing options

OysterVPNの比較をもっと見る

Here’s how OysterVPN stacks up against other VPN providers:

OysterVPN vs NordVPN

OysterVPNが優れている点: Lifetime pricing option, lower upfront cost, simpler plan structure

NordVPNが優れている点: 7,000+ servers in 118 countries, multiple independent audits, dedicated IP option

OysterVPN vs Surfshark

OysterVPNが優れている点: $59.99 one-time lifetime deal, no recurring charges

Surfsharkが勝利した点: Unlimited connections on all plans, larger server network, CleanWeb ad blocker, cheaper monthly rates on 2-year plans

OysterVPN vs Cyber​​Ghost

OysterVPNが優れている点: Lifetime access option, Irish jurisdiction outside intelligence alliances

Cyber​​Ghostが勝利した点: Streaming servers in 20+ countries, larger server fleet, independently audited no-logs policy

よくある質問

Mullvad VPNはOysterVPNより優れていますか?

Based on our Mullvad VPN review, Mullvad is the better choice for privacy. It has open-source apps, multiple independent audits, and requires zero personal data. OysterVPN is better for budget users who want streaming access and a low one-time price. Read our OysterVPN review for a deeper look at its strengths.

ムルヴァドは本当に匿名なのか?

Yes. Mullvad generates a 16-digit account number instead of asking for an email. You can pay with cash or bitcoin cash for full anonymity. Independent audits have confirmed that Mullvad stores no user activity data. This strict no logs policy is verified, not just claimed.

Oyster VPNは信頼できるVPNですか?

OysterVPN is a legitimate VPN service based in Ireland. It uses AES-256 encryption and claims a no logs policy. However, it has not been independently audited. The lifetime access deal is real but depends on the company remaining operational. All plans include a 30 day money back guarantee.

MullvadはNetflixで使用できますか?

Mullvad is not reliable for Netflix or other popular streaming services. It focuses on privacy over streaming. Most Mullvad servers are blocked by major platforms. If you need a VPN for streaming, OysterVPN or a larger provider like NordVPN are better options. OysterVPN has dedicated streaming servers that handle multiple devices at once.

Mullvad VPNの月額料金はいくらですか?

Mullvad charges a flat rate of €5 per month (roughly $5.50 USD). The price stays the same regardless of subscription length. There are no discounts, sales, or promotional pricing. This rate has not changed since the Mullvad service launched in 2009. OysterVPN is cheaper with its yearly plan at $2.50/month, but it lacks the user friendly interface and verified privacy of Mullvad.

ファヒム・ジョハーダー、創設者

ファヒム・ジョハーダー、創設者

900種類以上のAIツールをテスト済み。月間読者数25万人以上。

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