Click Fraud K9 Alternatives 2026: 7 Tools That Actually Work (K9 is Defunct)
Abisola Tanzako | Mar 26, 2026
Last updated: April 2026
The best Lunio alternatives in 2026 are ClickPatrol (best for GDPR-compliant protection from €59/mo), ClickCease (best for competitive intelligence with session recordings), and ClickGuard (best for advanced customization). If you need mobile fraud detection, consider TrafficGuard. For budget-friendly protection, Fraud Blocker starts at $69/mo. Each tool has distinct strengths depending on your ad spend, platforms, and priorities.
Lunio is a UK-based (Manchester) invalid traffic protection platform, founded in 2018 and originally named PPC Protect. It uses a self-learning AI algorithm to detect and block fraudulent clicks across 13+ ad platforms. The company raised $15M in Series A funding (Smedvig Capital, 2022), achieved ISO 27001 and SOC 2 certifications, and claims to protect 35,000+ Google Ads accounts across 130 countries. Nick Morley took over as CEO in December 2024.
The pain points above are the primary reasons advertisers explore alternatives. To summarize: Lunio’s hidden pricing, limited self-serve billing controls, lack of Microsoft Ads auto-blocking, and a dashboard that trails newer competitors push many teams to look elsewhere. Particularly for advertisers with budgets under $10K/month or those who need full transparency and control over their subscription, the alternatives below offer compelling options.
Best for: European advertisers, agencies, and e-commerce teams who need GDPR-native click fraud protection with transparent pricing.
ClickPatrol is a Netherlands-based click fraud protection tool that analyzes 800+ data points per click with 99.97% bot detection accuracy. Unlike Lunio’s single-layer approach, ClickPatrol offers four protection modules (AdProtector, AudienceProtector, DataProtector, and FormProtector) covering the full fraud lifecycle from click blocking to CRM spam prevention.
Key features:
Supported platforms: Google Ads, META (Facebook & Instagram), Microsoft Advertising (Bing), DV360
Pricing:
| Plan | Price | Clicks/month |
|---|---|---|
| Traffic Insights (Free Trial) | Free for 7 days | Up to 5,000 |
| Traffic Security Starter | €59/month (annual) | Up to 75,000 |
| Traffic Security PRO | €69/month (annual) | Up to 75,000 |
| Agency / Brand | On request | Unlimited |
No setup costs, no lock-in contracts. 17% discount on annual billing.
What users say:
“Within 2 weeks our ROAS improved and the fake traffic just disappeared. The price pays for itself many times over.” – E-commerce ad manager, Trustpilot (March 2026)
“ClickPatrol feels like a tool designed by people who actually understand digital marketing pain points. The UI is clean, the fraud detection is accurate, and I can prove ROI improvements quickly to stakeholders.” – James W., Head of Marketing, G2 (September 2026)
“We were losing about 15–20% of our budget to junk clicks. Competitors clicking our ads, bots, you name it. ClickPatrol was super easy to set up… within the first week we could already see how many fraudulent clicks were being blocked.” – Dental clinic chain advertiser, Trustpilot (March 2026)
Pros:
Cons:
Ratings: G2: ~4.9/5 | Capterra: 5.0/5 | SourceForge: 5.0/5 (51 reviews) | Trustpilot: 4.3/5 (30 reviews)
Ideal use case: A mid-size e-commerce advertiser spending EUR 5,000 to 25,000/month on Google Ads and Meta in a competitive niche (legal, insurance, SaaS), dealing with rising CPAs and suspected competitor clicks, who needs fast setup with no developer resources and wants GDPR-proof protection from day one.
Recommendation: ClickPatrol is a strong choice for European advertisers who want transparent pricing and protection that goes beyond click blocking (audiences, data, forms). The four-module approach is unique at this price point. However, if you advertise heavily on platforms beyond Google and Meta (TikTok, LinkedIn, etc.), Lunio’s broader platform coverage may be a better fit.
Best for: Marketers who want click fraud protection combined with competitor ad monitoring and visual session recordings in one platform.
ClickCease, now part of Israeli cybersecurity company CHEQ, is the largest click fraud tool in the SMB market with 14,000+ customers and 2M+ protected campaigns. It runs 2,000+ behavioral tests per visit, using CHEQ’s enterprise-grade technology, and includes unique features like AdSpy (competitor ad monitoring) and session recordings.
Key features:
Supported platforms: Google Ads, META (Facebook & Instagram), Microsoft Ads, YouTube
Pricing:
| Plan | Monthly | Annual (save 15%) | Websites |
|---|---|---|---|
| Starter | $84/mo | $63/mo | 1 |
| Pro | $104/mo | $78/mo | Up to 5 |
| Advanced | $124/mo | $93/mo | Up to 20 |
| Enterprise (CHEQ) | Custom | Custom | Unlimited |
7-day free trial included on all plans.
What users say:
“I saved more than 30% of my yearly budget for 2024–2026. The dashboards and reports are clear and easy to understand. And if something is not clear or does not work, the technical support team helps within a minute, literally a minute!” – Verified advertiser, Trustpilot (August 2026)
“I signed up after the pricing was presented as ‘$275/month.’ The page gave a strong month-to-month impression. Only in much smaller text was it indicated this monthly price was tied to an annual commitment.” – Verified reviewer, Trustpilot (January 2026)
“I checked session recordings and found that at least half of the most-blocked IPs belonged to legitimate users who were actively engaging with chat support.” – Capterra reviewer
Pros:
Cons:
Ratings: G2: 4.6/5 (~107 reviews) | Capterra: 4.7/5 (222 reviews) | Trustpilot: 4.4/5 (510 reviews)
Ideal use case: A digital marketing agency managing 5 to 15 client accounts on Google Ads, looking for fraud protection that also offers competitor ad monitoring (AdSpy) and visual proof of fraud via session recordings to show clients during reporting calls.
Recommendation: ClickCease is a solid choice for teams that want click fraud protection plus competitive intelligence in a single platform. The session recordings and AdSpy features are unique at this price point. Watch out for the annual billing commitment (often mistaken for monthly), and be aware that aggressive IP blocking can cause false positives that need monitoring.
Best for: Data-driven PPC managers and agencies who want maximum control over blocking rules, thresholds, and fraud forensics.
ClickGuard differentiates itself through deep customization. With 50+ configurable features, a four-layer protection system, and both automation and granular manual controls, it gives experienced advertisers the ability to fine-tune fraud detection to their exact needs. This is something Lunio’s automation-first approach does not offer.
Key features:
Supported platforms: Google Ads (all campaign types including PMax), Microsoft Ads, META (Facebook & Instagram)
Pricing:
| Plan | Monthly | Websites | Ad Spend Cap |
|---|---|---|---|
| Lite | $74/mo | 1 | Up to $5K |
| Standard | $119/mo | 3 | Up to $50K |
| Pro | $159/mo | Unlimited | Up to $100K |
| Custom | Contact sales | Unlimited | Unlimited |
20% off with annual billing. 7-day free trial, no credit card required.
What users say:
“ClickGuard has the most customization options I’ve seen in any click fraud tool. I can set different rules for different campaigns and actually see the forensic data behind every blocked click.” – Verified G2 reviewer
“Setup takes about 30–45 minutes to fully configure compared to 5 minutes for simpler tools. But once it’s dialed in, the level of control is unmatched.” – Agency PPC manager, Capterra
Pros:
Cons:
Ratings: G2: 4.7/5 (~30 reviews) | Capterra: 4.8/5 (~155 reviews) | Trustpilot: 4.9/5 (181 reviews) | TrustRadius: 8.5/10 (12 reviews)
Ideal use case: A data-savvy PPC manager at an agency handling $50K to $100K/month in ad spend across multiple clients, who wants to set custom blocking rules per campaign and needs forensic-level visibility into every blocked click for client reporting.
Recommendation: ClickGuard is the best option for teams that want full control over their fraud detection settings. The 50+ configurable features and forensic data are unmatched. But the 30 to 45 minute setup time and learning curve make it less suited for small teams or advertisers who prefer a hands-off approach. For those, ClickPatrol or Lunio are simpler alternatives.
Best for: App marketers, performance agencies with mobile campaigns, and advertisers operating primarily in the Asia-Pacific region.
TrafficGuard is an ASX-listed Australian company (Adveritas Limited, ASX: AV1) that processes 1 trillion+ data points monthly. Its standout strength is mobile fraud detection, with native MMP integrations (Adjust, AppsFlyer, Kochava, Singular, TUNE) that cover the full funnel from click to post-install events. Lunio has no coverage in this area.
Key features:
Supported platforms: Google Ads (Search, PMax), META (Facebook & Instagram), Apple Search Ads, Mobile Apps (via MMP), Affiliate Networks
Pricing:
| Plan | Price | Details |
|---|---|---|
| Monitor (Free) | $0/mo | Detection only, up to $2.5K ad spend, 1 domain |
| Shield | 2% of ad spend | Full blocking, unlimited spend, up to 5 domains |
| Scale (Enterprise) | Custom | Unlimited everything, dedicated success manager |
| Social (Meta) | From $250/mo | Meta portfolio protection, up to 25 ad accounts |
| Mobile | From $2,500/mo | Full-funnel mobile verification |
Also available on Google Cloud Marketplace.
What users say:
“I was suffering from tons of wasted clicks from bots and competitors, but TrafficGuard managed to block almost 95% of those clicks, increasing my ROI on ads.” – Gur T., Marketing Manager, SourceForge
“The pricing model seems very fair, 2% of ad spend and when the system saves me 10% of ad spend from wasted clicks it’s a no-brainer.” – Paul T., Developer, SourceForge
“One of the worst click fraud services out there. The support never answer, they have a bot that sends you to a help portal and that would be it.” – Verified reviewer, Trustpilot
Pros:
Cons:
Ratings: G2: 4.4/5 (~30 reviews) | Capterra: 4.7/5 (18 reviews) | SourceForge: 4.7/5 (89 reviews)
Ideal use case: An app-first company or performance agency running mobile campaigns across multiple MMPs (Adjust, AppsFlyer), operating in Asia-Pacific markets, where mobile install fraud is the primary concern rather than desktop click fraud.
Recommendation: TrafficGuard is the only serious option if you need mobile app fraud detection with MMP integrations. The free monitoring tier is a risk-free way to start. But the 2% of ad spend pricing model gets expensive above $50K/month, and support quality varies. For desktop-only Google Ads protection, ClickPatrol or ClickCease offer better value.
Best for: Small businesses and solo advertisers spending $2K–$75K/month on Google Ads who need straightforward protection at a lower price point.
Fraud Blocker is a bootstrapped, Los Angeles-based tool founded by performance marketers. It focuses on doing the basics well at the most transparent pricing in the market. While it lacks the AI sophistication of Lunio or ClickPatrol, its proprietary fraud scoring, device fingerprinting, and automated IP blocking cover the fundamentals effectively.
Key features:
Supported platforms: Google Ads (all campaign types), META (Facebook & Instagram, still maturing), Microsoft Ads (manual effort required)
Pricing:
| Plan | Price | Clicks/month | Domains |
|---|---|---|---|
| Starter | $69/mo | 5,000 | 1 |
| Pro | $89/mo | 10,000 | 5 |
| Pro | $109/mo | 25,000 | 50 |
| Pro | $159/mo | 50,000 | 50 |
| Enterprise | From $469/mo | 250,000+ | Unlimited |
7-day free trial, no credit card required. 20% off annual billing.
What users say:
“Pays for itself and stellar customer service. Saves tons of money by stopping garbage and fraudulent ad clicks.” – Josh S., Business Owner, fraudblocker.com
“In one week Fraud Blocker saved me $200 on $4,000 spent on Google Ads… my client is very happy with the results.” – Abder-KINANE, AppSumo Member
“I tried to open a ticket a week ago and still have not received an answer. The FraudBlocker reports are completely wrong. They detect threats avoided in Meta (where everything has been turned off for months) and do not detect any clicks from Google.” – Verified purchaser, AppSumo
Pros:
Cons:
Ratings: G2: 4.3/5 | AppSumo: 4.3/5 (~80 reviews) | SourceForge: listed but 0 reviews
Ideal use case: A solo advertiser or small business spending $2,000 to $10,000/month on Google Ads in a local services niche, who needs basic click fraud protection without a big budget or technical complexity, and wants to see clear savings data to justify the cost.
Recommendation: Fraud Blocker is the most budget-friendly option with honest, transparent pricing and easy setup. It handles the basics well for small to mid-size Google Ads accounts. However, the small team means support can be slow, and the detection engine is less advanced than ClickPatrol or ClickCease. If your ad spend grows past $25K/month or you need Meta protection, consider upgrading to a more capable tool.
Best for: Performance marketers running campaigns across a wide range of ad platforms (beyond just Google and Meta) who need a single tool to cover them all.
Spider AF originated in Japan (founded 2011 as Phybbit, rebranded 2020) and has expanded internationally with offices in Lisbon and New York. Its defining strength is the broadest ad platform coverage in the market (30+ platforms), combined with additional products for fake lead protection, website security scanning, and affiliate fraud.
Key features:
Supported platforms: Google Ads, META, Microsoft Ads, Yahoo Ads, TikTok, LinkedIn, X (Twitter), Taboola, Outbrain, and 20+ more
Pricing:
| Plan | Monthly | Annual (save 20%) | Clicks/month |
|---|---|---|---|
| Performance | $150/mo | $120/mo | Up to 500K |
| Elite | $990/mo | $790/mo | Up to 30M |
| Enterprise | Custom | Custom | Up to 100M |
Fake Lead Protection starts at $288/mo. 14-day free trial, no credit card required for detection. Unlimited domains on all plans.
What users say:
“Spider AF saved us around $10,300 in November and about $3,900 in April, which is incredible. This saved capital can now be invested in legitimate clicks.” – Darrius Garrett, Head of Double Up Marketing Group
“Since the introduction of Spider AF, the cost-effectiveness has been constantly improving, and we have recently recorded the lowest cost per acquisition.” – Digital Identity, FeaturedCustomers
Pros:
Cons:
Ratings: G2: 4.8/5 | Capterra: 4.6/5 (16 reviews) | FeaturedCustomers: 4.8/5 (1,373 ratings)
Ideal use case: A performance marketing team running campaigns across 10+ ad platforms (Google, Meta, TikTok, LinkedIn, programmatic networks) who needs a single dashboard to detect and block fraud across all channels, and values unlimited domain coverage.
Recommendation: Spider AF is the go-to tool if you advertise across many platforms beyond Google and Meta. The 30+ platform coverage and unlimited domains on all plans set it apart. Keep in mind that most of its customer base and case studies are still Japan-focused, and Western review data is limited. For teams that only run Google and Meta, ClickPatrol or ClickCease offer more proven options at a lower price.
Best for: Large brands and enterprises spending $100K+/month on ads who need full-funnel go-to-market security beyond just click fraud.
CHEQ is the parent company behind ClickCease and represents the enterprise tier of the same technology. While ClickCease (CHEQ Essentials) targets SMBs, CHEQ’s full platform extends beyond click fraud into bot mitigation, audience validation, data governance, and brand safety across the entire customer journey.
Key features:
Supported platforms: Google Ads, META, Microsoft Ads, and all major programmatic platforms
Pricing: Custom, typically five-figure annual contracts. Contact sales for a demo.
Pros:
Cons:
Ideal use case: A large enterprise brand spending $100K+/month across multiple channels, needing full go-to-market security (ad fraud, bot mitigation, audience validation, data governance) with dedicated account management and SLAs.
Recommendation: CHEQ is the right fit only for large enterprises with the budget and need for full-funnel security beyond click fraud. For the vast majority of advertisers looking for a Lunio alternative, one of the six tools above will be a better match in terms of price and ease of use.
| Feature | ClickPatrol | ClickCease | ClickGuard | TrafficGuard | Fraud Blocker | Spider AF | CHEQ |
|---|---|---|---|---|---|---|---|
| Price (from) | €59/mo | $84/mo | $74/mo | Free / 2% of spend | $69/mo | $150/mo | Custom (5-fig.) |
| Free Trial | 7 days | 7 days | 7 days (no CC) | Free tier | 7 days (no CC) | 14 days (no CC) | Demo only |
| Google Ads | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| META Ads | Yes | Yes | Yes | Yes | Maturing | Yes | Yes |
| Microsoft Ads | Yes | Manual CSV | Yes | No | Manual | Yes | Yes |
| Bot Detection Accuracy | 99.97% | Not disclosed | Not disclosed | Not disclosed | Not disclosed | Not disclosed | Not disclosed |
| Data Points/Click | 800+ | 2,000+ tests | Not disclosed | 200+ algorithms | Proprietary score | AI/ML | 2,000+ tests |
| Form/Lead Protection | Yes | No | No | No | Yes (email) | Yes (separate) | Yes |
| Audience Protection | Yes | Pixel Guard | Yes | Yes | No | Yes | Yes |
| Data/Conversion Protection | Yes | No | No | No | Conversion tag | No | Yes |
| Mobile App Fraud | No | No | No | Yes | No | No | Yes |
| Session Recordings | No | Yes | No | No | No | No | No |
| Competitor Intelligence | No | Yes (AdSpy) | No | No | No | No | No |
| GDPR Compliant | Yes (EU-built) | Yes | Yes | Yes | Yes | Yes | Yes |
| G2 Rating | ~4.9/5 | 4.6/5 | 4.7/5 | 4.4/5 | 4.3/5 | 4.8/5 | 4.6/5 |
| Capterra Rating | 5.0/5 | 4.7/5 | 4.8/5 | 4.7/5 | N/A | 4.6/5 | 4.7/5 |
Choosing a Lunio alternative depends on your specific situation. Here is a framework organized by the criteria that matter most.
Budget and ad spend volume
Your budget determines which tools make financial sense. Fraud Blocker ($69/mo) and ClickPatrol (€59/mo) offer the best value for advertisers spending under $25K/month. TrafficGuard’s percentage-based pricing (2% of spend) becomes expensive above $50K/month. ClickCease and ClickGuard sit in the mid-range. Enterprise-level spend ($100K+/month) may warrant CHEQ’s full platform.
Supported ad platforms
If you only run Google Ads, any tool on this list works. For Google + Meta, ClickPatrol, ClickCease, and ClickGuard have the most mature integrations. For Microsoft Ads, ClickPatrol and ClickGuard offer native automated blocking. If you run campaigns across 10+ platforms (including TikTok, LinkedIn, programmatic), Spider AF has the broadest coverage. For mobile app campaigns, TrafficGuard is the only serious option.
Technical setup and implementation time
ClickPatrol and Fraud Blocker are the easiest to set up (under 5 minutes, no developer needed). ClickGuard offers the most customization but requires 30 to 45 minutes of configuration. TrafficGuard has a moderate learning curve. Spider AF’s advanced features may overwhelm teams without analytics experience.
Type of threats
Different tools excel at different threat types. ClickPatrol’s FormProtector specifically targets junk leads and CRM spam. ClickCease detects competitor clicks and offers visual proof via session recordings. TrafficGuard covers mobile install fraud. If your primary issue is bot traffic on Google Ads, most tools perform comparably. If you are dealing with sophisticated competitor clicking, form spam, or mobile fraud, pick a tool with specialized capabilities in that area.
Scale and growth
Solo advertisers and small businesses can start with Fraud Blocker or ClickPatrol’s Starter plan. Agencies managing multiple clients should look at ClickGuard (unlimited clicks, multi-domain), ClickPatrol (Agency/Brand plan with unlimited brands), or ClickCease Pro (up to 5 websites, white-label reporting). If you expect significant growth, verify that the tool’s pricing scales reasonably with your ad spend.
There is no single “best” Lunio alternative. The right tool depends on your priorities:
The most effective approach is to run a free trial with 2–3 tools that match your priorities and compare the invalid traffic data side by side. Every tool on this list offers a free trial or free tier. Take advantage of them before committing.
Request a free, no-obligation demo.