iSpionage vs SimilarWeb in 2026: A shut-down PPC tool against the most complete digital intelligence platform available
iSpionage has not functioned since July 9, 2025. SimilarWeb is the live alternative with AI chatbot traffic tracking across six platforms, though the price gap between the two is enormous even setting the discontinuation aside.
iSpionage
SimilarWeb- iSpionage was discontinued on July 9, 2025 and cannot be purchased, logged into, or used for any competitive research today.
- SimilarWeb tracks AI chatbot referral traffic from ChatGPT, Claude, Perplexity, Gemini, Grok, and DeepSeek, a capability that did not exist in iSpionage at any point in its history.
- SimilarWeb's paid plans run from roughly $199 to $799+ per month with custom enterprise pricing above that, a very different budget than iSpionage's old positioning as a low-cost PPC tool.
- SimilarWeb's free tier exists but is capped enough (around 3 months of data, limited metrics) that it will not replace what a paying iSpionage customer used to get.
- SimilarWeb data becomes unreliable for websites under roughly 50,000 monthly visits, a limitation that matters for agencies whose clients run smaller sites.
- Neither tool offers white-label delivery, so agencies reporting to clients need to build their own presentation layer around whatever data they export.
Comparing iSpionage and SimilarWeb only really works as a before-and-after snapshot. iSpionage was discontinued on July 9, 2025 and no longer functions in any capacity: no new accounts, no data refreshes, no support. SimilarWeb is very much alive and, if anything, has grown into a far larger tool than iSpionage ever was, covering competitive traffic analytics, keyword research, sales intelligence, and retail data across more than 100 million websites, with AI chatbot traffic tracking for ChatGPT, Claude, Perplexity, Gemini, Grok, and DeepSeek layered on top. The two were never really peers in scope, even when iSpionage was operating; iSpionage was a focused, affordable PPC research tool, and SimilarWeb is an enterprise-grade digital intelligence platform with pricing to match. The honest comparison here is less "which tool is better" and more "here is what a former iSpionage budget actually buys you now."
The tools at a glance
iSpionage
Discontinued digital marketing analytics platform, now succeeded by TapClicks
iSpionage was built around PPC competitive intelligence: competitor Google and Bing ad tracking, estimated spend, keyword overlap, and ad copy monitoring, wrapped in a GA4 integration that agencies used for blended paid-and-organic reporting.
None of that is accessible anymore. iSpionage was officially discontinued on July 9, 2025, and the platform stopped accepting new accounts, updating data, and supporting existing customers on that date.
TapClicks is the named successor, but it is a marketing operations and reporting platform rather than a competitive intelligence tool, so it does not restore any of iSpionage's original PPC research functionality.
| Feature | Discontinued Not available |
|---|---|
| Platform status | Shut down July 9, 2025 |
| New account creation | ✗ |
| Data updates | ✗ |
| API access | ✗ |
| Support | ✗ |
SimilarWeb
Digital intelligence platform with AI chatbot traffic tracking across ChatGPT, Claude, and Perplexity
SimilarWeb is a digital data intelligence platform covering traffic analytics, keyword research, audience data, sales intelligence, and retail analytics across more than 100 million websites. It estimates traffic using panel data, ISP partnerships, and crawling, then models it out at scale, which works well for mid-to-large sites and gets noticeably less reliable under about 50,000 monthly visits.
The feature most relevant to a former iSpionage user is AI chatbot traffic monitoring: SimilarWeb tracks how much referral traffic a domain gets from ChatGPT, Claude, Perplexity, Gemini, Grok, and DeepSeek, and lets you benchmark that against competitors. This measures actual traffic referrals rather than prompt-level citation data, a different and in some ways more concrete signal than most AI visibility tools provide.
The cost of all this is real. Paid plans run from roughly $199 to $799+ per month depending on feature depth and data history, pricing above the free tier requires a sales conversation, and there is no white-label option for agencies who want to present the data as their own.
| Feature | Free $0 | Starter ~$199/mo | Team ~$399/mo | Business ~$799/mo | Enterprise Contact |
|---|---|---|---|---|---|
| AI chatbot traffic data | ✗ | ✓ | ✓ | ✓ | ✓ |
| Historical data depth | 3 months | 6 months | 12 months | 24 months | 36+ months |
| API access | ✗ | ✗ | ✓ | ✓ | ✓ |
| Sales intelligence | ✗ | ✗ | ✗ | ✓ | ✓ |
Head-to-head feature comparison
| Feature | iSpionage | SimilarWeb |
|---|---|---|
| Platform status | Discontinued July 9, 2025 | Active |
| Competitive traffic and audience data | Was PPC-focused only, no longer functional | Yes, across 100M+ websites |
| AI chatbot/referral traffic tracking | No | Yes |
| AI platforms covered | None | ChatGPT, Claude, Perplexity, Gemini, Grok, DeepSeek |
| Keyword research | Was available (PPC keywords), no longer functional | Yes |
| Sales intelligence | No | Yes (Business tier+) |
| API access | No | Yes (Team tier+) |
| White-label delivery | No | No |
| Free tier | No | Yes (limited) |
| Starting price | Cannot be purchased | $0 free / ~$199/mo paid |
Need AI visibility tracking without SimilarWeb's enterprise price tag?
SimilarWeb tracks AI chatbot referral traffic (how many visitors a domain gets from ChatGPT, Claude, Perplexity, Gemini, Grok, and DeepSeek) starting around $199/month, with API access gated to the Team tier and no white-label option at all. AI Peekaboo measures a related but different signal: prompt-level citation tracking across ChatGPT, Gemini, Perplexity, Google AI Overviews, and Google AI Mode, with a read and write API and white-label delivery included on every plan from $50/month. If you specifically need to know which prompts surface your brand rather than how much traffic AI platforms are sending you, AI Peekaboo answers that question at a fraction of SimilarWeb's cost.
Read the AI Peekaboo review →Which should you choose?
SimilarWebSimilarWebSimilarWebiSpionage not being purchasable removes any real tension from this comparison. The more useful question for a former iSpionage customer is whether SimilarWeb's price makes sense for what you actually need. If you want AI referral traffic data at real scale alongside deep competitive analytics, SimilarWeb is currently one of the only tools that provides it, and it comes at enterprise pricing to match. If your original iSpionage use case was lightweight PPC keyword research on a modest budget, SimilarWeb is a considerable overcorrection; SpyFu sits much closer to iSpionage's original price and scope.
Bottom line
iSpionage is gone, so there is no live comparison to make. If your team can absorb SimilarWeb's roughly $199 to $799+ per month range, it is the more capable platform by a wide margin and the only one of the two tracking AI chatbot referral traffic across six platforms. If budget was the reason you liked iSpionage in the first place, SimilarWeb is not a natural next step; look at SpyFu for PPC intelligence at a comparable price point instead.
Frequently asked questions
Is iSpionage still operating in 2026?
iSpionage has been fully discontinued since July 9, 2025 and does not accept new accounts, update data, or provide support to existing customers, so it should be treated as permanently shut down rather than temporarily unavailable.
Does SimilarWeb replace what iSpionage used to do?
SimilarWeb covers a much broader scope than iSpionage ever did, including traffic analytics, keyword research, sales intelligence, and AI chatbot referral tracking, but it does not specifically replicate iSpionage's PPC ad and spend research, and it costs considerably more.
Which AI platforms does SimilarWeb track for referral traffic?
SimilarWeb tracks referral traffic from ChatGPT, Claude, Perplexity, Gemini, Grok, and DeepSeek, letting you see how much traffic a domain receives from each AI source and compare that against competitors.
Is SimilarWeb worth it for a small agency that used to run iSpionage on a tight budget?
SimilarWeb's paid plans start around $199/month and the free tier is limited to a few months of capped data, so for agencies specifically replacing iSpionage's low-cost PPC research, SpyFu is a closer price match than SimilarWeb, which is built for teams with larger competitive intelligence budgets.
How accurate is SimilarWeb data for smaller websites?
SimilarWeb's traffic estimates become unreliable below roughly 50,000 monthly visits, sometimes showing zero traffic or inaccurate numbers for smaller sites, so its real value is in competitive analysis of mid-to-large domains rather than small or emerging sites.
Can I get white-label reports from SimilarWeb for client delivery?
SimilarWeb does not currently offer a white-label option, so agencies need to export data and build their own client-facing presentation layer around it rather than delivering SimilarWeb-branded reports directly.