⚡ 簡単な評価:
- 価格: Avast lists Free Antivirus at Free, Premium 安全 at $49.99/first yr and Ultimate at $49.99/first yr. OysterVPN starts at $5.99/month.
- 最適な用途: Avast SecureLine VPN suits people already paying for Avast antivirus. OysterVPN suits budget users who want lifetime access.
- 主な違い： Avast covers 10 devices and runs on アンドロイド TV. OysterVPN covers five and skips smart TVs entirely.
- 私たちのおすすめ： Avast SecureLine VPN, for its 60 day free trial and wider platform support.
Neither of these is the fastest VPN you can buy.
Both run small server networks by 2026 standards.
Neither has passed an independent 監査 of its no logs policy.
So the real question is what you get for the money.
Avast sells a bundle. OysterVPN sells a cheap one-time deal.
概要
This Avast VPN vs Oyster VPN comparison covers pricing, servers, speed, privacy and apps.
It also breaks down who each virtual private network actually fits.
Our sources are published specs, both vendors’ documentation and user reviews.
弊社のライター陣は、各アプリを実際に操作して時間をかけて検証しました。
それらのメモは、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。
Avast VPN とは何ですか?
Avast SecureLine VPN is the VPN service bundled with Avast antivirus.
インターネット接続を暗号化し、IPアドレスを隠します。
The network is small: around 700 servers in 34 countries.
Avast SecureLine runs on Windows, Mac, Android, iOS and Android TV.
One subscription covers 10 devices at once.
Most people meet it through other Avast products rather than by choice.
Here is a closer look at the app before we compare it.
アバストセキュアラインVPN
A 60 day free trial, 10 devices and Android TV support. Protocol choice covers OpenVPN, WireGuard and the in-house Mimic protocol.
アバストVPNの価格
Avast sells the VPN inside its security plans. Here is the current line-up.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 無料アンチウイルス | 無料 | Basic malware protection with no VPN |
| プレミアムセキュリティ | 初年度49.99ドル | Device security plus the VPN app |
| 究極の | 初年度49.99ドル | Security, VPN, cleanup and AntiTrack |
Pricing verified September 2026.
無料トライアル: Yes. A 60 day free trial, one of the longest in the category. You must add payment information first, but nothing is charged until day 61.
返金保証: Avast offers a 30 day refund window on paid plans bought directly.
📌 注記： Avast has dropped the monthly subscription for the VPN. Standalone SecureLine terms are sold yearly, and the app is included in the bundles above.
⚠️ 警告： Avast’s own pages have quoted standalone SecureLine terms near $4.59/month (one year), $4.29/month (two years) and $4.39/month (three years). Our table follows the plan データ above. Check the checkout total before you buy, because first-year prices renew higher.
Avast VPNの主な利点
Here is what you actually get:
- 60 day trial: Two months of full access beats the 7 day free trials most vpns hand out. You can test streaming and torrenting properly.
- Smart VPN mode: You set rules so the app can automatically connect on a public network or a banking site. Smart VPN also turns itself off where you don’t need it.
- Ten devices: One plan covers phones, laptops and a TV. Useful if you protect a household rather than one device.
- Protocol choice: You get the OpenVPN protocol, WireGuard and the proprietary Mimic protocol for restricted networks.
- Purpose-built servers: Avast SecureLine VPN servers include streaming optimized servers and torrenting servers, so you don’t guess which location works.
- キルスイッチ: If the connection drops, internet traffic stops instead of leaking your real IP address.
- Everyday privacy: Masking your location limits price discrimination and adds online privacy from an ISP that profiles your browsing data.
私たちのチームが気づいたこと
私たちの 作家 installed the Windows app and the Android app and ran both for everyday browsing. Here is what stood out, with the longer write-up in our Avast SecureLine VPN review.
The walkthrough below covers the same ground in video form.
Avast VPNのメリットとデメリット
✅ メリット
- 60 day free trial on every supported platform
- 10 simultaneous devices on one subscription
- Smart VPN mode sets automatic connection rules
- OpenVPN, WireGuard and Mimic protocol support
- Simple app that beginners can navigate
❌ デメリット
- No independent audit of the no logs policy
- FTC fined Avast $16.5 million in February 2024
- Only around 700 servers in 34 countries
- Speeds fall off sharply on distant servers
Oyster VPNとは何ですか?
OysterVPN is a smaller VPN provider run from Dublin, Ireland.
Ireland sits outside the 5/9/14 Eyes alliances.
The service routes your traffic through a VPN tunnel to a VPN server.
That hides your physical location and your real IP addresses.
OysterVPN’s servers number roughly 400+ across 35+ countries.
The headline is lifetime access for a single payment.
The video below walks through the OysterVPN app.
オイスターVPN
AES-256 encryption, dedicated streaming servers and torrenting on every server. Every plan carries a 30 day money back guarantee, so you can test the service risk free.
Oyster VPNの料金
One feature set, three terms. Pick how long you want to pay for.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 1ヶ月＋2ヶ月無料 | 月額5.99ドル | Short trips and short tests |
| 1年 | 月額29.99ドル | Steady year-round use |
| 生涯アクセス | 月額59.99ドル | Paying once instead of renewing |
Pricing verified September 2026.
無料トライアル: None. OysterVPN has no free tier and no trial, so free trials are not part of the ピッチ.
返金保証: Every plan carries a 30 day money back guarantee.
📌 注記： To purchase OysterVPN you need a major credit card or PayPal. Cryptocurrency is not accepted.
⚠️ 警告： Public OysterVPN pages have advertised $9.99 monthly with three months free, $2.50/month on the yearly term and a $49.99 one-off for lifetime access. Our table follows the plan data above, so confirm the total at checkout. Our rating for OysterVPN also comes from our own review page, since the product row carries no stored score.
Oyster VPNの主な利点
The OysterVPN features that matter most in this matchup:
- 生涯アクセス: Pay once instead of renewing every year. That is the single strongest reason people buy an OysterVPN subscription.
- 専用ストリーミングサーバー: Netflix, Max and ESPN+ work on the streaming servers, and BBC iPlayer is usually reachable too.
- Torrenting everywhere: P2P runs on every server, with no separate list of torrent locations to hunt for.
- Layered leak protection: IP leak protection covers DNS requests and WebRTC, and DNS leak protection is on by default.
- Ad and malware blocking: The blocker is built in, so you skip extra browser extensions.
- DDoS protection: Useful for competitive gaming, where a flooded connection ends the match.
- Irish base: Outside the Eyes alliances, under GDPR, with a strict no logs policy on paper.
私たちのチームが気づいたこと
Our writer paid for OysterVPN and used it daily across desktop apps and mobile apps. Here is what came out of that time, with more detail in our OysterVPN review.
Oyster VPNのメリットとデメリット
✅ メリット
- Lifetime access removes yearly renewals
- Torrenting allowed on all of its servers
- 広告およびマルウェアブロッカー内蔵
- 近隣のサーバーは高速です
- 30 day money back guarantee on every plan
❌ デメリット
- Speeds drop around 55% on distant servers
- No third-party independent audit
- Only five simultaneous connections
- No native Linux, smart TV or console apps
機能比較
Here are the ten areas that decide this matchup. The table gives you the shape of it, then we dig into each one.
| 特徴 | アバストセキュアラインVPN | オイスターVPN |
|---|---|---|
| 開始価格 | $49.99/first yr (bundled) | 月額5.99ドル |
| Free Plan or Trial | ✅ 60日間無料トライアル | ❌ なし |
| サーバーネットワーク | ~700 servers, 34 countries | 400+ servers, 35+ countries |
| 同時デバイス | 10 | 5 |
| キルスイッチ | ✅ | ✅ |
| スプリットトンネリング | ✅ | ✅ Windows and Android only |
| 専用ストリーミングサーバー | ✅ | ✅ |
| 全サーバーでトレントが利用可能 | ❌ Specific servers | ✅ |
| Android TV App | ✅ | ❌ |
| 独立監査 | ❌ | ❌ |
| 最適な用途 | Households already on Avast | One-time payment buyers |
1. サーバーネットワークとサーバー設置場所
アバストセキュアラインVPN: Around 700 servers spread over 34 countries. That is small next to the big vpn providers, and coverage thins out in the Middle East, Africa and South America. If your work depends on one obscure server location, check the list before paying.
オイスターVPN: Roughly 400+ servers in 35+ countries, so it edges Avast on breadth of server locations while trailing on raw count. Published figures vary between OysterVPN’s own pages, which is worth knowing before you commit.
2. Connection Speeds and VPN Protocols
アバストセキュアラインVPN: Reported speed tests show a fast connection on nearby servers and a steep fall on distant servers. You get the OpenVPN protocol, WireGuard and Mimic, which is built to get a vpn connection through networks that block the usual traffic.
オイスターVPN: The same pattern, only sharper. A typical speed test shows decent numbers on a nearby server, then OysterVPN’s speeds drop by around 55% at long range. Download speed holds up for browsing; upload speed and 4K streaming suffer. Secure vpn protocols include OpenVPN and IKEv2, with WireGuard missing from some apps.
⚠️ 警告： Neither is a fast vpn over intercontinental hops. Pick the fastest server near you and expect a slower internet connection on anything far away.
3．セキュリティ機能と暗号化
アバストセキュアラインVPN: The security features are the standard set: AES-256 encryption, a kill switch and DNS leak protection. Smart VPN mode adds a layer most rivals skip, letting the app connect itself on public Wi-Fi and stand down on your home wi fi network.
オイスターVPN: AES-256 encryption, an internet kill switch, IP leak protection and DDoS protection. The advanced security features lean toward gamers and torrenters rather than people worried about surveillance.
4. Privacy, Logs Policy and Independent Audits
アバストセキュアラインVPN: This is the weak spot. Avast records timestamps, data volumes and connection details, though it says nothing identifiable is kept. There is no independent audit, and the FTC fined Avast $16.5 million in February 2024 over the Jumpshot subsidiary that sold browsing data. The Czech Republic base is outside the major alliances, which helps a little.
オイスターVPN: A strict no logs policy on paper, backed by Irish jurisdiction and GDPR. But the zero logging policy has never been through independent audits either, so both companies are asking for the same trust. Neither has an audited no logs policy the way ノードVPN そうします。
5. Streaming Servers and Unblocking
アバストセキュアラインVPN: Streaming optimized servers handle popular streaming services like Netflix, Disney+ and Amazon Prime Video, with mixed results elsewhere. Hulu and BBC iPlayer are the usual sticking points, and the Android TV app means you can use Avast SecureLine VPN on streaming devices directly.
オイスターVPN: Dedicated streaming servers unblock several streaming services, including Netflix, Max, ESPN+ and BBC iPlayer. Hulu and Disney+ are the weak spots. There is no smart TV app, so geo restricted content has to come through a laptop, phone or router.
6. トレントとP2P
アバストセキュアラインVPN: P2P is allowed, but only on specific torrenting servers. You have to pick the right location, and those servers are tuned to avoid throttling during heavy transfers.
オイスターVPN: Torrenting runs on every server, with P2P-ready locations for the best download speed. For heavy downloaders this is the clearest practical win in the whole comparison.
7. Apps and Multiple Platforms
アバストセキュアラインVPN: The Windows app, Mac, iOS and Android app all look the same, and Android TV is covered. Ten devices on one plan is generous, and the layout is easy for beginners who just want to connect and forget.
オイスターVPN: The OysterVPN apps cover Windows and Mac desktop apps, an iOS app, an Android app and browser extensions. There is no native Linux client and no console support. Five simultaneous connections cover multiple devices but not a full household, and neither service offers unlimited connections.
8. Split Tunneling, Kill Switch and Leak Protection
アバストセキュアラインVPN: Split tunneling, a kill switch for connection drops and protection against DNS leaks. Smart rules can route banking sites outside the tunnel while the browser stays covered.
オイスターVPN: The split tunneling feature only works on Windows and Android, which is a real gap on Mac and iOS. Leak protection covers IP, DNS and WebRTC leak protection, and the kill switch cuts traffic the moment a vpn connection drops. That is the crucial feature for anyone downloading files, since it stops accidental data leaks.
9. カスタマーサポート
アバストセキュアラインVPN: A large help centre plus ticket support. Reviews of Avast’s customer support are mixed, with slow or scripted replies a common complaint.
オイスターVPN: Support is thinner. There is no phone line, chat support is limited, and email replies are reported as slow. That matters if an outage lands mid-deadline.
10. 価格設定とコスト
Side by side, the plans look nothing alike.
| プラン | アバストセキュアラインVPN | オイスターVPN |
|---|---|---|
| 無料プラン | Free Antivirus: Free | ❌ |
| エントリー料金プラン | プレミアムセキュリティ：初年度49.99ドル | 1-Month +2 Months free: $5.99/month |
| 中間計画 | アルティメットプラン：初年度49.99ドル | 1-Year: $29.99/month |
| Long-term option | Yearly terms only | Lifetime Access: $59.99/month |
| Risk-free window | 60日間無料トライアル | 30日間返金保証 |
アバストセキュアラインVPN: You are buying a security bundle, not just a vpn app. If you already want antivirus, cleanup and AntiTrack, the VPN rides along at no extra cost. If you only want a tunnel, you are paying for parts you will never open.
オイスターVPN: OysterVPN offers a single feature set at three price points, so there is no upsell ladder to climb. The lifetime option is the draw, but it also means trusting a small vpn service to still exist in five years.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| To test before paying | アバストセキュアラインVPN | 60 day trial, no charge upfront |
| One payment, no renewals | オイスターVPN | Lifetime plan exists |
| 大量のトレント | オイスターVPN | すべてのサーバーでP2P接続が可能 |
| Cover a whole household | アバストセキュアラインVPN | 10 devices, Android TV included |
| Split tunneling on Mac | アバストセキュアラインVPN | Oyster limits it to Windows and Android |
| Verified privacy claims | どちらでもない | No independent audits on either side |
💰 あなたの予算
OysterVPN wins on entry price and on the pay-once route. Avast only makes financial sense if you want the antivirus and cleanup tools in the same purchase.
🔌 あなたの技術スタック
Linux users and console gamers should stop at OysterVPN’s app list, because neither is covered. Avast supports more multiple platforms, including the living room.
📝あなたのオンライン活動
Torrenters get more from OysterVPN. People who mainly want a private browser session on café internet get more from Avast’s rules-based setup.
🎓 あなたの経験レベル
Both are beginner-friendly, with a user friendly interface and intuitive apps that need one tap to connect. Avast’s smart rules are the only part that rewards fiddling.
🆓 無料トライアルとデモ
Avast lets you run the full app for two months before paying, though it takes card details upfront. OysterVPN has no trial, so the refund window is your only test drive.
🛟 サポートオプション
Avast has the bigger help centre and ticket system. OysterVPN’s customer support is email-first and slower, which matters if a VPN outage blocks your work.
切り替えガイド
Already paying for one of them? Here is what changes if you move.
🔄 Switching from Avast SecureLine VPN to OysterVPN?
✅ 得られるもの：
- Lifetime pricing instead of yearly renewals
- Torrenting on every server, not a shortlist
- A built-in ad and malware blocker
❌ 失うもの：
- Five device slots and the Android TV app
- Smart VPN rules that connect automatically
- Split tunneling on Mac and iOS
📋切り替え方法：
- Cancel auto-renewal in your Avast account first
- Buy a plan, then install OysterVPN on each device
- Turn on the kill switch before your first session
🔄 Switching from OysterVPN to Avast SecureLine VPN?
✅ 得られるもの：
- Ten device slots plus streaming devices support
- Mimic protocol for restrictive networks
- Antivirus and cleanup tools in the same plan
❌ 失うもの：
- The one-time payment structure
- P2P access on all of its servers
- Built-in DDoS protection for gaming
📋切り替え方法：
- Claim a refund inside the 30 day window if you qualify
- Start the Avast trial and add your payment information
- Download the apps, then set your smart rules
私たちのレビューで取り上げられなかったこと
We focused on everyday home use: browsing, streaming, torrenting and public network safety. We did not run lab-grade stress tests, measure every server location, or check either service inside China. 仕事 licensing and router setups also sit outside this comparison. If you need a VPN for censorship-heavy 旅行, treat these findings as a starting point rather than an answer.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | オイスターVPN |
| 🌍 サーバーネットワーク | ネクタイ |
| ⚡ スピード | アバストセキュアラインVPN |
| 🔐セキュリティ機能 | アバストセキュアラインVPN |
| 🕵️ Privacy Record | オイスターVPN |
| 📺 ストリーミング配信 | アバストセキュアラインVPN |
| 📥 トレント | オイスターVPN |
| 💻 Apps and Platforms | アバストセキュアラインVPN |
| 🏆総合優勝 | アバストセキュアラインVPN |
🏆 WINNER: AVAST SECURELINE VPN
Avast SecureLine VPN takes 4 of 8 categories, with OysterVPN on 3 and one tie.
最適な用途: households with many devices, Android TV streaming, and anyone who wants to try a VPN properly before paying.
Avast SecureLine VPN wins on breadth. Ten devices, more platforms and a two-month trial give you room to decide without risk.
OysterVPN wins on cost and on torrenting. If you download a lot and hate renewals, that combination is hard to argue with.
Privacy is the uncomfortable part. Avast carries a real regulatory penalty on its record, and OysterVPN carries no verification at all. Paying more does not always buy more security.
Avast is a good vpn for a busy household on a budget. Many vpns run bigger networks, and both vpn services trail the leaders on online security proof, so if audited privacy is your priority, look at the best vpns with published audits instead.
More of Avast SecureLine VPN Compared
How Avast holds up against the rest of the field:
Avast SecureLine VPN vs NordVPN
Avast wins on: the length of its trial, 10 device slots versus 6, and the Mimic protocol for blocked networks
NordVPNが優れている点： audited logging claims, thousands more servers, and steadier long-distance throughput
Avast SecureLine VPN vs エクスプレスVPN
Avast wins on: bundled antivirus, a far cheaper first year, and automatic connection rules
ExpressVPNが優れている点： 90+ country coverage, router firmware, and consistent unblocking across services
Avast SecureLine VPN vs サーフシャーク VPN
Avast wins on: the two-month trial, Android TV polish, and a simpler settings screen
Surfsharkが勝利した点： device limits with no cap, cheaper multi-year terms, and independently reviewed infrastructure
Avast SecureLine VPN vs ピュアVPN
Avast wins on: trial length, security suite extras, and app consistency across Windows and Mac
PureVPNが優れている点： a much larger server count, dedicated IP options, and port forwarding for downloads
OysterVPNの比較をもっと見る
And how OysterVPN lines up elsewhere:
OysterVPNが優れている点： total cost over five years, torrenting on every location, and no upsell tiers
NordVPNが優れている点： verified privacy claims, speeds that survive long hops, and apps for TVs and consoles
OysterVPNが優れている点： the one-off payment option, DDoS filtering, and a simpler plan page
Surfsharkが勝利した点： connection limits, server count in the thousands, and split tunneling on every platform
OysterVPNが優れている点： lifetime pricing, built-in ad blocking, and P2P without location hunting
プロトンVPN 勝利したタイトル： a genuinely free tier, open-source clients, and Swiss privacy law
OysterVPN vs サイバーゴースト
OysterVPNが優れている点： pay-once pricing, a lighter app, and gaming-focused protection
CyberGhostが勝利した点： streaming-specific locations by platform, a 45 day refund window, and far wider server coverage
よくある質問
Avast VPNは本当に効果があるのか？
Yes. It encrypts traffic, hides your IP address and unblocks Netflix, Disney+ and Prime Video. Speeds hold up on nearby servers and fall away on long-distance connections.
Avast SecureLine VPNは安全に使用できますか？
The encryption and kill switch are sound. The trust problem is bigger: no independent audit, plus a $16.5 million FTC penalty in 2024 over data sold by a subsidiary.
Avast VPNの月額料金はいくらですか？
There is no monthly option now. The app ships inside Premium Security or Ultimate, both $49.99 for the first year, with standalone terms sold by the year.
Oyster VPNは良いサービスですか？
It is a decent vpn for budget users. Nearby speeds, torrenting and streaming all hold up. Distant servers, five connections and unverified privacy claims are the trade-offs.
Oyster VPNの本社はどこにありますか？
Dublin, Ireland. The country sits outside the 5/9/14 Eyes alliances and falls under GDPR, which gives the service a friendlier legal home than a US or UK base.
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