Similarweb alternatives: CompetitorBase vs Similarweb
Similarweb facts read on similarweb.com on 6 October 2026
Similarweb: Website traffic and engagement estimates for any domain, with SEO, AI-search and ad intelligence on higher plans.
CompetitorBase: Growth-channel report per competitor domain (ads, outbound, SEO, PR, backlinks, reviews, socials, founder audience, buzz), then a daily re-check with email alerts.
| CompetitorBase | Similarweb | |
|---|---|---|
| Entry price | $29/month | $199/month ($125/month billed annually) |
| How you start | 3-day free trial with a card, then $29/month; no demo | Free trial, then a self-service plan; larger packages through sales |
| What it covers | Website, pricing, ads (Meta, Google, LinkedIn, TikTok and X ad libraries), SEO, backlinks, socials, Reddit mentions, press and reviews | Website performance, traffic and engagement, customer demographics, a marketing channels overview and competitor alerts on the entry plan |
Similarweb estimates how much traffic a site gets and where it comes from. CompetitorBase reports which channels a competitor runs, shows the ads, and emails when pricing, positioning or a channel changes; it has no audience demographics and no app data.
Prices
Similarweb: Competitive Intelligence $199/month ($125/month billed annually); Competitive Intel & SEO & AEO $399/month ($333 billed annually); Competitive Intel, SEO & AEO & Ads $649/month ($542 billed annually); business and enterprise packages quoted by sales.
Each self-service plan includes 1 user seat. The entry plan holds 3 months of historical data and the two higher plans 6 months. SEO and AI-search data start at $399/month. Ad data (creatives, campaigns, ad spend) is only in the $649/month plan.
CompetitorBase: Starter $29/month (10 competitors); Pro $59/month (20); Scale $199/month (50). Monthly through Stripe; cancel any time.
What Similarweb has that CompetitorBase does not
- Traffic and engagement estimates for any website, with the split by marketing channel.
- Customer demographics for a site's audience.
- Keyword research, a rank tracker, a site audit and backlink data from the $399/month plan up.
- AI-search tracking (brand visibility, citations, 150 tracked prompts) from the $399/month plan up.
- Ad spend estimates in the $649/month plan.
What CompetitorBase has
- A lower entry price: $29/month for 10 competitors against $199/month for Similarweb's entry plan.
- Ad creatives on every plan, read from the Meta, Google, LinkedIn, TikTok and X ad libraries. Similarweb lists ad intelligence as not included below its $649/month plan.
- Changes to a competitor's pricing page and website, re-checked every 24 hours and sent by email.
- Cold outbound, press, review sites, the founder's audience and Reddit mentions, which Similarweb's plan table does not list.
Similarweb alternatives compared
| Tool | What it does | Entry price | Price read |
|---|---|---|---|
| CompetitorBase | Growth-channel report per competitor domain (ads, outbound, SEO, PR, backlinks, reviews, socials, founder audience, buzz), then a daily re-check with email alerts. | $29/month | 6 October 2026 |
| SpyFu | Search marketing data per domain: organic and paid keywords, Google Ads history, backlinks and rank tracking. | $39/month ($29/month billed annually) | 6 October 2026 |
More: all comparisons, best competitor monitoring tools, competitor monitoring cost.