⚡ Quick Verdict:
- 価格: SpyFu starts at $29/mo vs Similarweb at $125/mo
- 最適な用途: SpyFu for competitor keyword research and PPC analysis, Similarweb for website traffic analysis and market research
- 主な違い： SpyFu focuses on SEO and PPC competitor spying with 19+ years of historical data. Similarweb focuses on traffic analytics, audience insights, and digital intelligence across websites and apps.
- Our pick: SpyFu for most users — it costs 77% less and covers keyword research, rank tracking, and Google Ads analysis for SEO professionals and digital marketing agencies
SpyFuとSimilarwebはどちらも、競合他社の秘密を明らかにすると謳っています。
しかし、それらは全く異なる問題を解決する。
SpyFu digs into keyword rankings, Google Ads campaigns, and PPC strategies.
Similarweb tracks website traffic, audience behavior, and market trends.
The price gap between them is massive too.
This comparison breaks down features, pricing, and use cases so you pick the right tool.
概要
This SpyFu vs Similarweb comparison covers pricing, features, and ease of use.
We also break down who each tool works best for.
Our sources include published specs, documentation, and G2 reviews.
Our writers also spent hands-on time with each platform.
Those observations appear in the “What Our Team Noticed” sections below.
SpyFuとは何ですか?
SpyFuは、SEOおよびPPCマーケター向けに開発された競合調査ツールです。
It lets you search any domain and see every keyword they rank for in organic traffic and paid search.
You also get their full Google Ads history, ad spend estimates, and backlink analysis data.
SpyFu stores 19+ years of historical data on paid keywords and organic keywords.
Most users choose it for competitor keyword research and SpyFu PPC analysis.
スパイフー
See every keyword your competitors rank for. SpyFu reveals their Google Ads campaigns, organic rankings, and backlinks in one dashboard.
SpyFuの価格設定
SpyFu is one of the more affordable SEO tools on the market. Here is what each plan costs in 2026.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 基本 | 月額29ドル | フリーランサー そしてソロマーケター |
| プロ＋AI | 月額89ドル | Growing teams needing API access |
| チーム／代理店 | 月額187ドル | 複数のクライアントを管理する代理店 |
Pricing verified April 2026.
無料トライアル: SpyFuは無料アカウントを提供しており、多くの機能を無料で試用できます。クレジットカードは不要です。
返金保証: 有料プランにはすべて30日間の返金保証が付いています。
📌 注記： SpyFu offers a 30% discount on annual subscriptions. You can also add extra user seats for $15/month on Basic and $30/month on Pro + AI.
⚠️ 警告： The Basic plan limits you to 10,000 row search results and 250 sales leads. If you need unlimited search results and data exports, you’ll need Pro + AI or higher.
SpyFuの主な利点
Here’s what makes SpyFu worth considering:
- Deep Historical Data: SpyFu provides 19+ years of SEO and PPC data. You can spot long-term performance trends and seasonal patterns.
- 競合他社のキーワード調査： Search any domain to see their top organic keywords and paid keywords. The Kombat tool visualizes keyword overlaps using a Venn diagram.
- Google 広告アドバイザー: The built-in advisor recommends profitable keywords based on competitor bidding history. It helps you find gaps in your Google Ads account.
- 検索回数無制限： Unlike many other SEO tools, SpyFu gives you unlimited searches and data exports on all plans.
- お手頃価格： At $29/month, SpyFu costs far less than Semrush or アーレフス. It’s a strong pick for 中小企業 and SEO beginners.
- 顧客向けレポート： SpyFu generates reports that summarize SEO data, PPC research, and competitive analysis. Perfect for digital marketing agencies.
What Our Team Noticed
私たちの 作家 signed up for SpyFu and spent several days exploring the platform. Here’s what stood out:
SpyFuの長所と短所
✅ メリット
- 19年以上にわたるキーワードと広告の履歴データ
- すべてのプランで無制限の検索とデータエクスポートが可能
- Affordable starting price of $29/month
- Kombat tool makes keyword gap analysis visual and fast
- 無料アカウントが利用可能（クレジットカード不要）
❌ デメリット
- Backlink analysis is less detailed than Ahrefs
- データ更新は週単位で行われ、日次または時間単位ではありません。
- No website traffic analysis or audience insights
- 限定サイト 監査 features compared to full SEO suites
Similarweb とは何ですか?
Similarweb is a digital intelligence platform for traffic analytics and market research.
It tracks billions of digital interactions across websites, mobile apps, and social media.
The Similarweb platform shows you traffic sources, engagement metrics, and audience demographics for any site.
Similarweb features also include keyword research, rank tracking, and competitor benchmarking tools.
Most users choose it for website traffic analysis and understanding their competitive landscape.
シミラーウェブ
Analyze website traffic, benchmark competitors, and spot market trends. Similarweb delivers digital intelligence for enterprise teams and analysts.
Similarwebの価格
Similarweb pricing is built for mid-size and enterprise teams. Here’s what each plan costs in 2026.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 競合情報 | 月額125ドル | Marketers tracking competitor traffic |
| 競合情報とSEO | 月額335ドル | SEO teams needing keyword and rank data |
| 競合情報、SEO、広告 | 月額540ドル | Full marketing teams covering paid search too |
Pricing verified April 2026.
無料トライアル: Similarweb offers a 7-day free trial for new users. A limited free version is also available with restricted data.
返金保証: Contact Similarweb sales for refund policy details. No standard guarantee is published.
📌 注記： Similarweb also offers a Team plan priced from $14,000/year and an Enterprise plan with custom pricing. API access is available on higher tiers.
⚠️ 警告： G2 reviews mention that Similarweb’s data accuracy drops for low-traffic websites. Long-term subscribers have also noted rising costs over time.
Similarwebの主なメリット
Here’s what makes Similarweb worth considering:
- ウェブサイトのトラフィック分析： Similarweb breaks down traffic sources, engagement data, and geographic trends for any website. You can see where visitors come from and how long they stay.
- 競合他社のベンチマーク: Compare your performance against up to 25 competitors across traffic, keyword rankings, and engagement metrics.
- 市場調査： Spot market trends and seasonal patterns. The platform helps category managers and analysts understand consumer behavior across industries.
- AI SEO Agents: New AI agents turn keyword inputs into data-driven SEO plans. This is a 2025 addition that sets the Similarweb platform apart from older SEO tools and allows users to stay ahead of emerging trends.
- アプリのインテリジェンス： Track app traffic, app usage, and mobile performance alongside website data. Few of the best SEO tools cover both web analytics and mobile in one place.
- セールスインテリジェンス: Sales teams can use AI-driven prospecting tools to find high-intent leads and tailor outreach based on digital insights.
What Our Team Noticed
Our writer signed up for Similarweb and spent several days exploring the platform. Here’s what stood out:
Similarwebのメリットとデメリット
✅ メリット
- Deep website traffic analysis with real user data
- 最大25社の競合他社と一度にベンチマーク比較
- Covers web, mobile apps, and social media tracking
- AI-powered SEO strategy agents for keyword planning
- 7-day free trial with no commitment
❌ デメリット
- Starts at $125/month, expensive for freelancers
- トラフィックの少ないウェブサイトではデータ精度が低下する
- Limited free version with restricted data access
- No built-in PPC keyword spy or ad history tool
機能比較
Ready to dive into a detailed comparison of SpyFu vs Similarweb? We’ll explore 9 key features to help you determine which platform best suits your needs.
| 特徴 | スパイフー | シミラーウェブ |
|---|---|---|
| 開始価格 | 月額29ドル | 月額125ドル |
| 無料プラン | ✅ 無料アカウント | ✅ 無料版には制限があります |
| キーワードリサーチ | ✅ | ✅ |
| PPC / Google広告調査 | ✅ Full ad history | ❌ Ads only on top tier |
| ウェブサイトトラフィック分析 | ❌ | ✅ |
| バックリンク分析 | ✅ 基本 | ✅ 基本 |
| ランクトラッキング | ✅ | ✅ |
| 市場調査 | ❌ | ✅ |
| アプリインテリジェンス | ❌ | ✅ |
| 最適な用途 | SEO/PPC competitor spying | Traffic analytics & market intel |
1. 競合分析
スパイフー: SpyFu lets you search any domain and see every keyword they rank for in organic and paid search. You also get estimated ad spend, ad history, and a full list of their competitors’ PPC campaigns. The Kombat tool uses a Venn diagram to show keyword overlaps and gaps between your domain and up to two competitor sites.
シミラーウェブ: Similarweb approaches competitor analysis through traffic data. You can see any website’s traffic sources, engagement metrics like bounce rate and visit duration, and audience demographics. It benchmarks your performance against up to 25 competitors across traffic, keyword rankings, and engagement data.
2. キーワードリサーチ
スパイフー: SpyFu’s keyword research tool shows search volume, keyword difficulty, and cost-per-click data. It automatically groups keywords into topic clusters for content planning. You also see related keywords, keyword overview data, and historical ranking positions going back years. The professional plan includes unlimited domain overview PDFs and API access for deeper keyword analysis.
シミラーウェブ: Similarweb’s keyword explorer focuses on search volume, search intent, and keyword performance trends. It draws from real user data and clickstream partnerships. The tool helps you identify emerging trends and high-performing keywords across your competitive landscape.
3. Google Ads & PPC Research
スパイフー: This is where SpyFu stands out. You can see every keyword a competitor has bought on Google Ads, their ad copy variations, and estimated monthly ad budgets. The Google Ads Advisor recommends profitable keywords based on competitor bidding history. SpyFu’s PPC research covers the full ad history for millions of domains. You can also connect your Google Ads account and Google Search Console to refine your SEO strategies and PPC strategies further.
シミラーウェブ: Similarweb offers paid search data, but only on the top-tier plan ($540/month). It shows ad strategies and competitor ad spend, but lacks the deep ad history and keyword-level PPC insights that SpyFu provides. For dedicated PPC analysis tools, SpyFu is the stronger pick.
⚠️ 警告： If Google Ads campaigns are your priority, Similarweb’s entry-level plans don’t include ad data. You’d need the $540/month plan to get PPC insights.
4. Website Traffic Analysis
スパイフー: SpyFu does not provide website traffic analysis. It focuses on keyword rankings, search traffic estimates, and PPC data. If you need to know how many visitors a website gets, SpyFu won’t help.
シミラーウェブ: Website traffic analysis is Similarweb’s core strength. It shows total visits, traffic sources, bounce rates, visit duration, and geographic breakdowns. It aggregates data from clickstream partnerships, web crawlers, and direct integrations. This is the feature that sets Similarweb apart from most other SEO tools.
5. ランクトラッキング
スパイフー: SpyFu lets you track keyword rankings over time for both organic and paid keywords. It monitors weekly ranking changes across major search engines. The daily performance tracker shows how your SEO efforts are trending.
シミラーウェブ: Similarweb includes a rank tracker that monitors keyword rankings over time. It also ties ranking data to traffic estimates, giving you a clearer view of how rank changes affect your website traffic. The tool connects with Google Analytics for deeper analysis.
6. バックリンク分析
スパイフー: SpyFu includes backlink analysis that focuses on quality over quantity. The Backlink Kombat feature shows links pointing to multiple competitors but not to you, helping identify outreach opportunities. However, SpyFu’s backlink database is less detailed than dedicated tools like Ahrefs.
シミラーウェブ: Similarweb offers backlink intelligence for analyzing link profiles. It provides referral traffic data alongside backlink data, which helps you see which links actually drive visitors. Both tools offer basic backlink analysis, but neither matches Ahrefs for depth.
7. Market Research & Trends
スパイフー: SpyFu does not include market research tools. It stays focused on keyword-level SEO and PPC data. For market-level trends, you’d need a separate tool.
シミラーウェブ: Similarweb excels at market research. It helps you understand seasonal trends, benchmark against industry peers, and spot emerging trends before competitors. Category managers and 仕事 analysts use it to track consumer behavior across entire industries.
8. SERP Analysis & AI Features
スパイフー: SpyFu offers SERP analysis that shows who ranks for your target keywords and how positions have changed over time. The Pro + AI plan adds チャットGPT integration and AI-assisted keyword recommendations. SpyFu also provides a keyword overview with 簡略化された difficulty scoring.
シミラーウェブ: Similarweb introduced AI SEO Strategy Agents (AI agents) in 2025. These agents turn keyword inputs into full data-driven SEO plans. The Trend Analyzer Agent helps spot shifts in search queries and user behavior before they become obvious. The platform’s capabilities also include search intent analysis and advanced features for tracking key metrics across competitor sites.
9. 価格設定とコスト
料金プランを並べて比較してみましょう。
| 計画レベル | スパイフー | シミラーウェブ |
|---|---|---|
| 無料 | ✅ 無料アカウント | ✅ 無料版には制限があります |
| エントリ | 月額29ドル（ベーシックプラン） | 月額125ドル（競合インテル） |
| 中 | 月額89ドル（プロ版＋AI搭載） | 月額335ドル（インテル＆SEO） |
| トップ | 月額187ドル（チーム／代理店向け） | 月額540ドル（インテル、SEO、広告） |
スパイフー: SpyFu is the clear winner on price. The Basic plan at $29/month gives you competitor keyword research, PPC analysis, and rank tracking. Annual billing saves you 30%. Even the top Team/Agency plan at $187/month costs less than Similarweb’s cheapest paid option.
シミラーウェブ: Similarweb costs 4x more at the entry level. The $125/month plan covers traffic analytics and competitive intelligence but excludes SEO tools. To get keyword research and rank tracking, you need the $335/month plan. Full PPC data requires the $540/month tier.
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 | スパイフー | Starts at $29/month vs $125 |
| PPC競合他社のスパイ活動 | スパイフー | Full Google Ads ad history |
| ウェブサイトのトラフィックデータ | シミラーウェブ | Core traffic analytics platform |
| 市場調査 | シミラーウェブ | Industry trends and benchmarks |
| キーワードギャップ分析 | スパイフー | コンバットベン図ツール |
| App analytics | シミラーウェブ | Tracks mobile app performance |
| 初心者向け | スパイフー | よりシンプルなインターフェース、より低コスト |
💰 あなたの予算
SpyFu starts at $29/month. Similarweb starts at $125/month. If budget is your main concern, SpyFu gives you keyword research, rank tracking, and PPC data at a fraction of the cost.
🔌 あなたの技術スタック
SpyFu works as a standalone SEO and PPC research tool. Similarweb integrates with Google Analytics and offers API access for teams that need to pipe digital insights into their own dashboards.
📝 あなたのSEO戦略
If your SEO strategy focuses on keyword rankings and 上位 specific competitors, SpyFu fits better. If you need to understand broader traffic patterns and audience behavior, Similarweb is the right tool.
🎓 あなたの経験レベル
SpyFu has a simpler, more user-friendly interface that works well for SEO beginners. Similarweb is built for analysts and enterprise teams who already know how to interpret traffic data.
🆓 無料トライアルとデモ
SpyFu offers a free account with no time limit. Similarweb offers a 7-day free trial plus a limited free version. Try both before committing to a paid plan.
🛟 サポートオプション
SpyFu’s customer support is described as responsive across multiple channels. Similarweb’s support gets mixed feedback, especially around billing and contract changes.
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？切り替える場合、どのような変更が予想されますか？
🔄 SpyFuからSimilarwebに切り替えますか？
✅ 得られるもの：
- Website traffic analysis with real user data and engagement metrics
- Market research tools for tracking industry trends and consumer behavior
- App intelligence for mobile analytics alongside web data
❌ 失うもの：
- Deep PPC research with full Google Ads ad history and ad spend data
- Kombat keyword gap tool with Venn diagram visualization
- Affordable pricing — Similarweb costs 4x more at entry level
📋切り替え方法：
- SpyFuからキーワードリストと競合レポートをエクスポートします。
- Sign up for Similarweb’s 7-day free trial to test the platform
- Set up your competitor benchmarks and keyword tracking in Similarweb
🔄 SimilarwebからSpyFuに切り替えますか？
✅ 得られるもの：
- Full PPC research with competitor ad history, ad copy, and budget estimates
- 19+ years of historical keyword and ad campaign data
- Massive cost savings — SpyFu starts at $29/month vs $125/month
❌ 失うもの：
- Website traffic analysis with visitor counts and engagement data
- 市場調査ツールと業界ベンチマーク
- App intelligence and mobile analytics capabilities
📋切り替え方法：
- Similarwebからトラフィックレポートとキーワードデータをダウンロードしてください。
- Create a free SpyFu account to test the interface
- Import your target domains and set up competitor tracking in SpyFu
What Our Review Didn’t Cover
This comparison focused on individual users and small-to-mid-size teams. We didn’t test enterprise-level deployments or custom API integrations at scale. Similarweb’s stock intelligence and shopper intelligence modules weren’t evaluated. SpyFu’s RivalFlow AI partnership wasn’t covered in depth. For a full Similarweb review or SpyFu keyword deep-dive, see our individual reviews linked above. If you’re managing a large enterprise team with 50+ users, your needs may differ — but the valuable insights in this comparison should give you a strong starting point.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | スパイフー |
| 🔍キーワード調査 | スパイフー |
| 📊 PPCリサーチ | スパイフー |
| 🌐 交通分析 | シミラーウェブ |
| 📈 市場調査 | シミラーウェブ |
| 👶 使いやすさ | スパイフー |
| 🔌 連携機能とAPI | シミラーウェブ |
| 🏆総合優勝 | スパイフー |
🏆 優勝：SpyFu
SpyFuは7部門中4部門で受賞した。
最適な用途: Competitor keyword research, PPC analysis, SEO professionals on a budget
SpyFu and Similarweb serve different types of marketers. SpyFu is built for SEO professionals and PPC managers who want to spy on competitor keywords and Google Ads campaigns. Similarweb is built for analysts and enterprise teams who need website traffic data and market intelligence.
Similarweb is the better choice if your job depends on traffic benchmarking and audience insights. It covers web analytics, app intelligence, and industry trends that SpyFu simply doesn’t offer.
However, for most SEO and PPC professionals, SpyFu delivers more actionable data at a fraction of the price. At $29/month versus $125/month, the value gap is hard to ignore.
SpyFuの比較をもっと見る
SpyFuが他の競合製品と比べてどうなのか、以下に示します。
SpyFuが勝利した点： Lower pricing ($29 vs $139/mo), unlimited searches on all plans, deeper historical ad data going back 19+ years
Semrushが優れている点： Larger keyword database, built-in site audit tool, content marketing toolkit with topic research
SpyFuが勝利した点： PPC campaign research with full ad history, budget-friendly entry plan, Kombat keyword gap visualization
Ahrefsが勝利した点： Larger backlink database with hourly updates, stronger content explorer, more detailed site audit reports
SpyFu vs SEランキング
SpyFuが勝利した点： Deeper historical data archive, unlimited search results on all plans, stronger Google Ads research tools
SEランキングで勝利した項目： Built-in site audit and on-page SEO チェッカー, white-label reporting for agencies, social media management tools
SpyFu vs ユーバーサジェスト
SpyFuが勝利した点： Full PPC competitor spying, Kombat keyword overlap tool, 仕事 lead generation features
Ubersuggestが勝利した点： Lower lifetime pricing option, simpler interface for beginners, built-in content ideas ジェネレータ
Similarwebの比較をもっと見る
Similarwebが他の競合他社と比べてどうなのか、以下に示します。
Similarwebが勝利した点： Website traffic estimates with real user data, market research and industry benchmarks, app intelligence for mobile analytics
Semrushが優れている点： More affordable starting price ($139 vs $125 but with SEO tools included), deeper keyword database, built-in content and social media tools
Similarwebが勝利した点： Traffic analytics and audience demographics, competitor benchmarking across 25 domains, market-level trend analysis
Ahrefsが勝利した点： Larger backlink index with hourly refreshes, more granular keyword difficulty scoring, stronger site audit capabilities
シミラーウェブ vs モズ
Similarwebが勝利した点： Full website traffic analysis beyond just SEO metrics, AI-driven SEO strategy agents, app and shopper intelligence modules
Mozが勝利した点： More accessible pricing for small teams, Domain Authority metric widely used in the SEO industry, stronger local SEO features
シミラーウェブ vs コンテンツラプター
Similarwebが勝利した点： Website traffic data and audience insights, competitive benchmarking at scale, market research for enterprise teams
Content Raptorが勝利した点： AI-driven content creation and optimization, lower entry price for content-focused teams, built-in content scoring and briefs
よくある質問
SpyFuの用途は何ですか？
SpyFu is an essential tool for competitor keyword research, PPC analysis, and rank tracking. It shows you every keyword a competitor ranks for in organic search and every ad they’ve run on Google Ads. Marketers use SpyFu’s keyword research to find profitable keywords, lucrative keywords, and relevant keywords their competitors target. The SpyFu API also gives developers access to keyword search data and domain contacts for lead generation.
Similarwebは何に使われていますか？
Similarweb is used for website traffic analysis, market research, and competitive intelligence. The Similarweb platform shows traffic sources, audience demographics, engagement data, and website rankings for any site. Enterprise teams and analysts rely on it for competitor benchmarking, conversion analysis, and tracking market trends with data-driven insights and real-time insights.
Is SpyFu or Similarweb better for SEO?
SpyFu is better for keyword-level SEO work like finding target keywords, valuable keywords, and tracking keyword rankings across organic traffic and PPC keywords. SpyFu’s keyword analysis covers core keywords, competitors’ PPC campaigns, and competitors’ PPC strategies. Similarweb is better for understanding overall traffic patterns, user behavior, and AI traffic trends. For most SEO professionals using keyword research tools and competitor analysis, SpyFu offers more actionable data at a lower price.
Similarwebの料金はいくらですか？
Similarweb cost starts at $125/month for the Competitive Intelligence plan. The Web Intelligence Starter plan is the entry point for digital strategy teams. The professional plan with full SEO tools costs $335/month. Adding paid search data brings the price to $540/month. A team plan is available from $14,000/year, and the enterprise plan offers custom pricing with API pricing based on usage. Premium stocks data and stock performance tracking are available through the stock intelligence module.
SpyFuの無料版はありますか？
Yes. SpyFu offers a free account that lets you access many features with limited data. No credit card is required. The free account is a good way to test the SpyFu PPC and SEO research tools before upgrading. The user-friendly interface makes it easy for SEO beginners to start with keyword search and competitor research. Similarweb also has a limited free version and a 7-day free trial for new users.
English 
Spanish 
Chinese 
German 
French 
Arabic 
Russian 
Portuguese 
Japanese 
Korean 
Italian 
Turkish 
Dutch 
Polish 
Indonesian 
Thai 
Vietnamese 