⚡ 簡単な評価:
- 価格: アドガード VPN starts at $2.40/month and has a free plan. OysterVPN starts at $5.99/month.
- 最適な用途: AdGuard VPN for ad-free browsing on many デバイス. OysterVPN for torrenting and open VPN protocols.
- 主な違い： AdGuard runs a proprietary protocol. OysterVPN uses OpenVPN and IKEv2.
- 私たちのおすすめ： AdGuard VPN for most users. The free plan and 10-device limit add more value.
AdGuard VPN and OysterVPN both promise cheap, private browsing.
But they are built for different people.
AdGuard puts ad blocking at the center of its VPN service.
OysterVPN leans on open protocols, torrenting, and a lifetime access deal.
Neither matches ノードVPN or other premium VPNs on speed or server count.
So the real question is simple: which trade-offs can you live with?
概要
This AdGuard VPN vs Oyster VPN comparison covers price, 安全, speed, and streaming.
私たちは両ツールのドキュメント、価格ページ、ユーザーレビューを確認しました。
私たちのライター陣は、それぞれの動物と実際に触れ合う時間も設けました。
これらの観察結果は、以下の「チームが気づいたこと」のセクションに記載されています。
By the end, you’ll know which VPN fits your budget and habits.
AdGuard VPNとは何ですか？
AdGuard VPNは、AdGuard Software Limitedが提供するVPNサービスです。
It encrypts your traffic and hides your IP address behind a remote server.
That keeps your real location private, especially on public Wi-Fi.
The company is based in Cyprus, outside the 5/9/14 Eyes Alliances.
AdGuard offers a full family of privacy tools, like AdGuard DNS.
Its network covers 65+ locations across 53 countries.
The VPN shines brightest when you already use other AdGuard products.
アドガードVPN
Block ads and hide your IP in one app. Start free with 3 GB of データ each month. Paid plans cover up to 10 devices.
AdGuard VPNの価格
2026年におけるAdGuard VPNのサブスクリプション料金は以下のとおりです。
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 1ヶ月 | 月額11.99ドル | Short trips or testing paid features |
| 1年 | 月額3.99ドル | 節約したい常連ユーザー |
| 2年 | 月額2.40ドル | 長期的に見て最も価値のあるもの |
Pricing verified October 2026.
無料トライアル: There’s no paid trial. The free plan gives you 3 GB of data every month. It caps speeds at 20 Mbps and unlocks only a few server locations.
返金保証: The yearly and 2-year plans include a 30-day money back guarantee. The monthly plan does not.
📌 注記： The 1-year plan is billed at $47.88 upfront. Every paid plan covers 10 simultaneous connections. AdGuard accepts credit cards, PayPal, and cryptocurrencies.
⚠️ Price check: Some review sites list the 2-year plan as $119 billed every two years. Confirm the final total at checkout before you buy AdGuard VPN.
AdGuard VPNの主なメリット
Here’s what makes AdGuard VPN worth a look:
- 組み込みの広告ブロック機能： AdGuard VPN pairs with the AdGuard ad blocker in integrated mode. Both run at once, so blocking ads happens inside the VPN tunnel.
- Ad-Filtering DNS: You can pick DNS servers that block ads and trackers. A filtering DNS server stops junk before pages load.
- 10台のデバイスを同時に接続可能： One AdGuard account covers 10 simultaneous connections. That’s double OysterVPN’s limit.
- Wide App Support: Desktop apps and mobile apps cover Windows, macOS, Android, iOS, Android TV, and Linux. Browser extensions cover Chrome, Firefox, and Edge.
- Privacy-First Base: AdGuard complies with GDPR. Its policy says it never logs IP addresses, browsing history, or timestamps.
- Censorship-Resistant Protocol: The proprietary protocol disguises VPN traffic as regular HTTPS. That helps on networks that block VPNs.
- 無料プラン: You can try it risk free with 3 GB a month. No payment is needed to start.
私たちのチームが気づいたこと
私たちの 作家 tested AdGuard VPN on a Windows PC and mobile devices for daily browsing. Here’s what stood out:
AdGuard VPNのメリットとデメリット
✅ メリット
- Built-in ad and tracker blocking through AdGuard DNS
- Free plan with 3 GB of data every month
- Up to 10 simultaneous connections on paid plans
- Easy to use apps for desktop, mobile, and アンドロイド TV
❌ デメリット
- Proprietary protocol with no OpenVPN or WireGuard option
- ログなしの主張に関する第三者による監査は行われていない。
- No 24/7 customer support, only email and a ticketing system
OysterVPNとは何ですか？
OysterVPN is a budget VPN service from Ireland.
It encrypts your internet connection and routes it through a remote VPN server.
That hides your IP address and physical location from websites.
Ireland sits outside the 5/9/14 Eyes Alliances.
OysterVPN offers a rare lifetime access option alongside regular plans.
It also allows torrenting on every server.
Sources put its network between 150+ servers in 17 countries and 400+ in 35+.
オイスターVPN
Open protocols, a built-in ad blocker, and P2P on every server. Every plan includes a 30-day money back guarantee.
OysterVPNの価格設定
OysterVPN keeps one payment tier. You just choose how long to subscribe.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 1ヶ月＋2ヶ月無料 | 月額5.99ドル | サービスのテスト |
| 生涯アクセス | 月額59.99ドル | Long-term users who hate renewals |
| 1年 | 月額29.99ドル | 年間コミットメント |
Pricing verified October 2026.
無料トライアル: No. OysterVPN has no free trial or free VPN tier.
返金保証: All plans come with a 30-day refund window. You can test the service risk free.
📌 注記： Every OysterVPN subscription covers five simultaneous connections. You can only pay with major credit cards and PayPal. 暗号 isn’t accepted.
⚠️ Price check: Some review sites list the monthly plan at $9.99 with 3 free months. Others show $2.50/month yearly and a one-off $49.99 for lifetime access. Confirm at checkout before you purchase OysterVPN.
OysterVPNの主な利点
These OysterVPN features put it on budget shortlists:
- Open VPN Protocols: OysterVPN supports OpenVPN and IKEv2. These secure VPN protocols have long public track records.
- 完全漏水防止： It blocks IP, DNS, and WebRTC leaks. DNS leak protection keeps your DNS requests inside the tunnel.
- Torrenting Everywhere: P2P traffic is allowed on all servers. You don’t need to hunt for special torrent locations.
- 内蔵広告ブロッカー： An ad and malware blocker comes with every plan. You can skip a separate extension.
- DDoS攻撃対策： Its servers absorb flood attacks aimed at your connection. Gamers benefit most.
- ユーザーフレンドリーなインターフェース: The OysterVPN apps feel simple on desktop and mobile. Beginners can install OysterVPN in minutes.
- 生涯アクセス: You can pay once instead of renewing. Few VPN services offer that.
私たちのチームが気づいたこと
Our writer used OysterVPN for streaming and daily browsing across multiple devices. Here’s what stood out:
OysterVPNのメリットとデメリット
✅ メリット
- Supports OpenVPN and IKEv2 protocols
- すべてのサーバーでトレントの使用が許可されています
- Blocks IP, DNS, and WebRTC leaks
- Lifetime access option for long-term users
❌ デメリット
- No free trial or free plan
- Speeds drop by about 55% on distant servers
- No native Linux app or smart TV app
- No live chat or phone support
機能比較
Here’s how AdGuard VPN and OysterVPN compare across nine key areas. Pricing gets its own section at the end.
| 特徴 | アドガードVPN | オイスターVPN |
|---|---|---|
| 開始価格 | 月額2.40ドル | 月額5.99ドル |
| 無料プラン | ✅ 月間3GB | ❌ |
| サーバーネットワーク | 65+ locations, 53 countries | 150+ to 400+ servers (sources vary) |
| 同時接続 | 10 | 5 |
| VPNプロトコル | 専有 | OpenVPN, IKEv2 |
| キルスイッチ | ✅ | ✅ |
| スプリットトンネリング | ✅ | ✅ WindowsとAndroidのみ |
| 内蔵広告ブロッカー | ✅ | ✅ |
| 第三者監査 | ❌ | ❌ |
| Linuxアプリ | ✅ | ❌ |
| 生涯プラン | ❌ | ✅ |
| 最適な用途 | Ad-free browsing on many devices | Torrenting and open protocols |
1. 暗号化とセキュリティ
アドガードVPN: AdGuard VPN uses AES-256 encryption to secure your data. Its kill switch blocks traffic if the tunnel fails. These security measures cover everyday online security well.
オイスターVPN: OysterVPN also uses AES-256 encryption on every connection. It adds advanced security features like DDoS protection and leak blocking. Core protection is similar on both.
⚠️ 警告： Neither VPN has passed a third-party audit. You have to trust each company’s own privacy claims.
2. VPNプロトコル
アドガードVPN: The AdGuard VPN protocol is proprietary. It masks VPN traffic as normal HTTPS, which helps dodge censorship. But it skips OpenVPN and WireGuard, and nobody has audited it.
オイスターVPN: OysterVPN lets you choose OpenVPN or IKEv2. Some sources also list WireGuard, while others say it’s missing. Either way, you get vetted VPN protocols.
⚠️ 警告： A closed protocol is harder to verify. If transparency matters most, OysterVPN’s open protocols are the safer pick.
3. Ad & Tracker Blocking
アドガードVPN: This is where AdGuard puts its focus. Can AdGuard VPN block ads by itself? Yes, through filtering DNS, and even better with the AdGuard ad blocker running alongside.
オイスターVPN: OysterVPN includes a built-in ad and malware blocker. It handles pop-ups and known bad domains. It’s useful, but it isn’t a full filtering toolkit.
4. DNS & Leak Protection
アドガードVPN: You can choose DNS servers that block ads, trackers, and malware. AdGuard DNS comes from the same team. That makes DNS control a real strength here.
オイスターVPN: OysterVPN prevents IP, DNS, and WebRTC leaks. Its IP leak protection keeps your real address hidden during reconnects. That’s solid leak protection for a budget VPN.
5. キルスイッチとスプリットトンネル
アドガードVPN: AdGuard VPN includes a kill switch that stops data leaks if the connection drops. Split tunneling lets certain websites or apps skip the VPN. Both work in the main apps.
オイスターVPN: OysterVPN’s internet kill switch cuts traffic whenever the VPN connection drops. That prevents accidental data leaks, a crucial feature for torrenting. It also has a split tunneling feature.
⚠️ 警告： OysterVPN’s split tunneling only works in its Windows and Android apps. マック and iOS users miss out.
Here’s how the split tunneling settings look inside OysterVPN.
6. プライバシーとログなしポリシー
アドガードVPN: AdGuard VPN follows a strict no logs policy. It collects only minimal data to fix technical issues. AdGuard Temp Mail adds a throwaway 受信トレイ for extra online privacy.
オイスターVPN: OysterVPN calls its approach a zero logging policy. It says it doesn’t collect or store user data. Its Irish base adds GDPR protection.
💡 プロのヒント: Neither provider has an audited no logs policy. If proof matters, look at audited providers like プロトンVPN.
7. スピードとパフォーマンス
アドガードVPN: AdGuard VPN’s performance suits everyday browsing, not data intensive tasks. Speed tests show about a 20% drop on nearby servers. Paid plans average roughly 58.73 Mbps download speed. Some users still report slow speeds near 10 Mbps from 65 Mbps, plus connection drops.
オイスターVPN: OysterVPN’s servers deliver decent speeds on nearby routes. On distant servers, OysterVPN’s speeds drop by about 55% on average. Its smaller server network also limits long-distance options.
OysterVPN also adds DDoS protection, which helps keep online gaming sessions stable.
💡 プロのヒント: Pick the fastest server near you for better connection speeds. Run a quick speed test before video calls, since upload speed dips too.
8. Streaming & Torrenting
アドガードVPN: AdGuard VPN can unblock Netflix, Disney+, and BBC iPlayer. It struggles with Amazon Prime and Peacock, and some streaming platforms buffer. It doesn’t advertise dedicated P2P servers.
オイスターVPN: OysterVPN unblocks popular streaming services like Netflix, Max, ESPN+, and BBC iPlayer. Its dedicated streaming servers help. It struggles with Hulu and Disney+. Torrenting is allowed on all servers with solid P2P safeguards.
⚠️ 警告： Neither VPN suits 4K streaming on distant servers. Expect buffering if you connect to a US server from far away.
9. Apps, Devices & Support
アドガードVPN: AdGuard VPN’s apps cover Windows, macOS, Android, iOS, Android TV, and Linux. The AdGuard アシスタント extension adds one-click page filtering. Its support team works through email and a ticketing system, not 24/7 chat.
オイスターVPN: It offers a desktop app for Windows and Mac, an iOS app, and an Android app. There’s no native Linux app or app for smart TVs and consoles. It has no phone or live chat support, and email replies are slow.
10. 価格設定とコスト
Here’s how the plans line up side by side.
| プラン | アドガードVPN | オイスターVPN |
|---|---|---|
| 無料 | 3 GB/month free plan | ❌ |
| Short Term | 1 Month: $11.99/month | 1-Month +2 Months free: $5.99/month |
| 年間 | 1 Year: $3.99/month | 1-Year: $29.99/month |
| Long Term | 2 Years: $2.40/month | Lifetime Access: $59.99/month |
| 返金保証 | 30 days (yearly & 2-year) | 30日間（全プラン共通） |
| Payment | Cards, PayPal, crypto | Cards, PayPal |
アドガードVPN: The 2-year plan is the cheapest way in. The free version caps speeds at 20 Mbps and data at 3 GB. That’s less generous than some free plans, but it costs nothing.
オイスターVPN: OysterVPN has no free tier. Its lifetime access option appeals if you plan to keep one VPN for years. Check the checkout page, since listed prices vary between sources.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| 予算が限られている | アドガードVPN | Free plan plus the lowest monthly rate |
| 広告なしのブラウジング | アドガードVPN | Built-in ad blocker and DNS filtering |
| トレント | オイスターVPN | P2P allowed on every server |
| Protocol transparency | オイスターVPN | OpenVPN and IKEv2 support |
| 多くのデバイス | アドガードVPN | 10 connections vs 5 |
| Linux or Android TV | アドガードVPN | Native apps for both |
| Pay once, keep it | オイスターVPN | 生涯アクセスオプション |
💰 あなたの予算
Want to spend nothing? AdGuard VPN’s free plan covers light use. OysterVPN’s lifetime plan suits people who hate renewals.
🔌お使いのデバイス
AdGuard VPN supports Linux, Android TV, and 10 devices. OysterVPN stops at five, with no apps for streaming devices like smart TVs.
🎬 Your Streaming & Torrenting Habits
OysterVPN handles P2P on every server and unblocks geo restricted content on Max and ESPN+. AdGuard VPN does better with Disney+.
🎓 あなたの経験レベル
Both offer intuitive apps for beginners, including the Windows version. Advanced users will prefer OysterVPN’s protocol choices.
🆓 無料トライアルとデモ
Start with AdGuard VPN’s free plan. OysterVPN has no trial, so lean on its 30-day refund window.
🛟 サポートオプション
Neither offers 24/7 help or live chat support. Expect email-based customer support and slower replies on both.
切り替えガイド
既にこれらのツールのいずれかをご利用ですか？切り替えた場合の変更点は以下のとおりです。
🔄 Switching from AdGuard VPN to OysterVPN?
✅ 得られるもの：
- OpenVPN and IKEv2 protocol options
- すべてのサーバーでトレントの使用が許可されています
- A lifetime access option
❌ 失うもの：
- The free 3 GB monthly plan
- Five extra device slots (10 drops to 5)
- Native Linux and Android TV apps
📋切り替え方法：
- Cancel AdGuard VPN before your next renewal date
- Sign up for OysterVPN and keep its 30-day refund window in mind
- Install the apps and turn on the internet kill switch
🔄 Switching from OysterVPN to AdGuard VPN?
✅ 得られるもの：
- Integrated mode with the AdGuard ad blocker
- Up to 10 simultaneous connections
- Crypto as a payment option
❌ 失うもの：
- Open OpenVPN and IKEv2 protocols
- すべてのサーバーでP2P接続が可能
- The lifetime access option
📋切り替え方法：
- Try AdGuard VPN’s free plan first
- Pick a yearly or 2-year plan for refund coverage
- Install the apps and choose your filtering DNS server
私たちのレビューで取り上げられなかったこと
This comparison focused on everyday users and small households. Does AdGuard VPN work in China? Reports say it struggles there, and so does OysterVPN. We didn’t test either inside China. We also skipped router setups and long-term reliability past the October 2026 versions. If you handle sensitive work, pick an independently audited provider. Our full AdGuard VPN review and OysterVPN review go deeper on each tool.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | アドガードVPN |
| 🛡️ Security & Protocols | オイスターVPN |
| 🚫 広告ブロック | アドガードVPN |
| ⚡ スピードとパフォーマンス | ネクタイ |
| 🎬 ストリーミングとトレント | オイスターVPN |
| 📱 アプリとデバイス | アドガードVPN |
| 🔒 プライバシーと管轄権 | ネクタイ |
| 🏆総合優勝 | アドガードVPN |
🏆 WINNER: ADGUARD VPN
AdGuard VPN wins 3 of 7 categories, with 2 ties.
最適な用途: Ad-free browsing, multi-device households, and free VPN users
💡 How we broke the tie: Both VPNs hold the same 3.5/5 rating. AdGuard VPN takes the win for its free plan, 10-device limit, and wider app support.
AdGuard VPN and OysterVPN are both a decent VPN for basic use. Neither competes with premium VPNs on speed or server count.
AdGuard VPN is the stronger everyday tool. Its ad blocking, free plan, and device support give most people more value. Reviewers praise its ad blocking but criticize its speed and support.
OysterVPN makes sense if you torrent often or want open protocols. Its lifetime option also suits anyone tired of renewals.
Neither VPN has an independent audit yet. Choose based on your habits, not marketing claims.
AdGuard VPNの比較
AdGuard VPNが他のVPNプロバイダーと比べてどうなのか、以下に比較してみましょう。
AdGuard VPNが優れている点： a free 3 GB plan, ad-filtering DNS from the same team, and the Temp Mail extra.
NordVPNが優れている点： reliable access in China, round-the-clock live support, and a much larger server network.
AdGuard VPNが優れている点： page-level ad control through AdGuard Assistant, integrated mode with its ad blocker, and a lower 2-year price.
ProtonVPNが優れている点： an audited no-logs policy, Swiss privacy laws, and open protocols like WireGuard.
AdGuard VPN vs サーフシャーク
AdGuard VPNが優れている点： a free plan, DNS-level ad filtering, and bonus tools like Temp Mail.
Surfsharkが勝利した点： unlimited connections, stronger performance in third-party reviews, and cheaper long-term plans.
AdGuard VPN vs プライベートインターネットアクセス
AdGuard VPNが優れている点： simpler apps for beginners, a no-cost entry plan, and native ad blocking tools.
Private Internet Accessが優れている点： open-source apps, a no-logs policy proven in court, and deeper settings for power users.
OysterVPNの比較をもっと見る
Here’s how OysterVPN compares with other options:
OysterVPNが優れている点： a pay-once lifetime option, torrenting on every server, and a lower total cost.
NordVPNが優れている点： audited security, faster distant connections, and apps that work in China.
OysterVPNが優れている点： the lifetime deal, built-in DDoS protection, and a single, simple payment tier.
Surfsharkが勝利した点： unlimited connections instead of five, WireGuard support, and far more locations.
OysterVPNが優れている点： a much lower price, the lifetime option, and a built-in ad and malware blocker.
エクスプレスVPN 勝利したタイトル： faster speeds, reliable access in restrictive countries, and a bigger network.
OysterVPN vs サイバーゴースト
OysterVPNが優れている点： lifetime pricing, DDoS protection, and P2P on every server.
CyberGhostが勝利した点： streaming servers for more platforms, more server locations, and wider device apps.
よくある質問
AdGuard VPN は安全に使用できますか?
Yes, for everyday use. It uses AES-256 encryption, a kill switch, and a strict no-logs policy. Its proprietary protocol hasn’t been independently audited, though.
AdGuard VPNは無料ですか？
Partly. The free plan gives you 3 GB of data per month at speeds up to 20 Mbps. Unlimited data requires a paid plan.
AdGuardのデメリットは何ですか？
The main downsides are a proprietary protocol, no third-party audit, and no 24/7 live support. Speeds can also drop sharply on distant servers.
Oyster VPNは信頼できるVPNですか？
Yes. It’s a real VPN service with AES-256 encryption, leak protection, and a kill switch. Its no-logs claims haven’t been verified by an independent audit yet.
Oyster VPNの本社はどこにありますか？
OysterVPN is based in Ireland. That puts it outside the 5/9/14 Eyes Alliances and under GDPR rules.
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