AutoTDK vs Similarweb (2026): which should you pick?

Pick AutoTDK if

• Fits if you look up a competitor's keywords and traffic while you're on their site
• Works for bloggers gathering long-tail ideas from Google, YouTube, Amazon and Pinterest suggestions

Look elsewhere if

• Watch out: the pricing page doesn't say how many credits a plan includes or what a credit buys, and one-time packs show no readable price
• Watch out: every plan is shown as half off a crossed-out price with no end date, and monthly credits expire after a month
• Not for you if you want a way back, as the pricing FAQ says refunds aren't supported
• Tight if you stay free, since the number of free daily credits isn't stated
• Skip it if you're not on Chrome, and note the developer hasn't identified itself as a trader, so EU consumer rights don't apply

Pick Similarweb if

• Fits if you want an estimate of how much traffic a rival gets and where it comes from
• Works for marketing teams sizing up a market by comparing lots of websites

Look elsewhere if

• Pricey if you want SEO tools, which start on the $333 plan, as the $125 plan covers traffic only
• Skip it if you need exact numbers for other sites, as these are Similarweb's estimates
• Tight if your team is bigger than one or you need more than 6 months of history, since both mean a custom package
• Watch out: the API, data feeds and integrations like Looker Studio and Salesforce need a business package with API access
• Watch out: the free version and extension show a high-level sample only, and there's no desktop or phone app

AutoTDK

• The pricing page does not say how many credits each plan includes or what a credit buys.
• The pricing FAQ says refunds are not supported.
• One-time credit packs are offered on a separate tab; their prices were not readable, and one-time credits last a year.
• The extension is listed for Chrome only, and the store notes the developer has not identified itself as a trader.

Similarweb

• Self-service plans cover one user and 3 or 6 months of history; extra seats and up to 37 months of history come in custom packages sold through sales.
• Keyword research, rank tracking, site audit and backlinks start with the $333 plan; the $125 plan covers traffic and competitor analysis only.
• The API, data feeds and integrations such as Looker Studio, Excel and Salesforce need a business package with API access.
• Traffic figures for other people's sites are Similarweb's estimates, not those sites' own analytics.

AutoTDK

Competitor keywords

On any site you visit, the extension lists the keywords that may drive its organic traffic, with search volume, keyword difficulty and competition.

Long-tail keyword ideas

The website expands a seed keyword with suggestions from Google, YouTube, Bing, Amazon, eBay, Pinterest and other engines, exportable as CSV, text or a mind map.

Traffic estimates

Shows a site's traffic trend, traffic sources and visitors by country, for sizing up competitors.

Backlinks and Whois

Lists backlink data and referring domains, and shows basic Whois and domain details for the site.

AI visibility and GEO audit

Checks how a brand may appear in AI answers; the website names ChatGPT, Gemini, Perplexity, Claude, Copilot, DeepSeek and Grok and adds a GEO audit and llms.txt generator.

AI writing tools

The website generates and rewrites page titles, descriptions, keywords, FAQs and testimonials, and includes an AI detector and humanizer.

Similarweb

Website traffic and engagement

Estimated visits, engagement, audience demographics and marketing channel mix for any website, set side by side with competitors.

Keyword research and rank tracking

Keyword research, keyword gap analysis and a rank tracker with SERP analysis, included from the Competitive Intel & SEO & AEO plan.

Site audit and backlinks

Technical site audits and backlink data sit in the same SEO bundle, alongside an organic search overview of any domain.

AI brand visibility

Tracks how a brand appears in AI chatbot answers, with 150 tracked prompts, sentiment and citation analysis, and traffic arriving from AI tools.

Ad intelligence

The top self-service plan shows competitors' ad creatives and campaigns, search and display ads, advertiser demand signals and ad spend.

Free browser extension

Shows traffic, AI chatbot visits, top keywords and ranking for the site in the current tab, on Chrome, Edge, Firefox and Opera.

AutoTDK

• Free$0

  Free daily credits, which keep coming after a purchase; the number per day is not stated.

• Basic$9.99

  per month; credits included not shown on the page

  Shown as a discount from a crossed-out $19.98, with no end date. Subscription credits last one month.

• Pro$29.99

  per month; credits included not shown on the page

  Marked most popular; shown as a discount from a crossed-out $59.98, with no end date.

• Premium$99.99

  per month; credits included not shown on the page

  The largest plan; shown as a discount from a crossed-out $199.98, with no end date.

Similarweb

• Competitive Intelligence$125

  per month, billed annually ($199 billed monthly)

  1 user and 3 months of history: traffic and engagement, demographics, marketing channels and competitor alerts. No SEO tools.

• Competitive Intel & SEO & AEO$333

  per month, billed annually ($399 billed monthly)

  1 user and 6 months of history. Adds keyword research, rank tracking, site audit, backlinks and 150 tracked AI chatbot prompts.

• Competitive Intel, SEO & AEO & Ads$542

  per month, billed annually ($649 billed monthly)

  Everything in the SEO plan plus ad intelligence: creatives, search and display ads, advertiser demand and ad spend. 1 user.

• Businesses & EnterprisesCustom

  Sold through sales: more seats, up to 37 months of history, country-level data, AI Studio, API, data feeds, SSO and managed services.

AutoTDK

No public discounts listed.

Similarweb

• Annual discount

  Lower monthly rate with annual billing

  Billed annually, Competitive Intelligence is $125 a month instead of $199, the SEO plan $333 instead of $399, and the Ads plan $542 instead of $649.