# Similarweb alternatives

> Six Similarweb alternatives for competitor research, SEO and ad data, with what each does best and prices read off their own sites on 20 Oct 2026.
- **Author**: Marxx
- **Published**: 2026-11-06
- **Category**: Ad research tools
- **URL**: https://marxx.ai/library-alternatives/similarweb-alternatives

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The main Similarweb alternatives are Semrush, Ahrefs and SE Ranking for SEO and competitor research, SpyFu for competitor keywords at a low price, and Sensor Tower if app data matters. Similarweb's self-serve Competitive Intelligence package lists $125 a month billed yearly, or $199 a month (checked 2026-10-20).

## Why teams look for an alternative

Similarweb is a web intelligence suite. Its self-serve packages cover website performance, traffic and engagement, customer demographics, marketing channels, competitor alerts, SEO, AI search visibility and, in the top package, ad intelligence. Business and enterprise plans go through sales.

Teams look elsewhere for price, for team seats, or because they need only one part of the suite. Each self-serve package lists 1 user. The entry package lists 3 months of historical data, and the next two list 6 months.

Say three people need access. Ahrefs Lite includes 1 user and lets you add 2 more at $40 a month each, so $129 + 2 x $40 = $209 a month. Similarweb's self-serve packages list 1 user each, so ask sales about team seats.

## Quick comparison

| Tool | Best for | Starting price |
|---|---|---|
| Similarweb | Traffic, channels, SEO and ads in one suite | $125/month billed yearly, $199 monthly |
| Semrush | SEO and competitor research | SEO plan $139/month |
| Ahrefs | Backlinks, keywords and site research | Lite $129/month |
| SE Ranking | SEO and AI visibility for marketing teams | Core $129/month |
| SpyFu | Competitor keywords and ads | Basic $39/month |
| Sensor Tower | App and web data, with ad data | Not listed publicly |
| Marxx | The ad side: competitor ads and your own accounts | See [pricing](/pricing) |

Prices read on each company's own site on 20 October 2026, in dollars.

## Semrush

Its SEO plan is $139 a month, or $117.33 a month billed yearly. It covers 5 websites, 500 tracked keywords, competitor analysis, Position Tracking and Site Audit. Ad research is a separate toolkit. See [Semrush Ad Research alternatives](/alternatives/semrush-ad-research-alternatives).

## Ahrefs

Lite is $129 a month, Standard is $249 and Advanced is $449. Annual billing saves up to 17%. The plans list Site Explorer, Keywords Explorer, Rank Tracker, Web Analytics and Brand Radar. Lite includes 1 user.

## SE Ranking

Core is $129 a month on monthly billing, or $103.20 billed yearly. It lists 2,000 tracked keywords, 100 AI prompts a day and unlimited keyword, competitor and backlink research. There is a 14-day free trial with no card.

## SpyFu

Basic is $39 a month, or from $29 a month billed yearly. It lists domain and keyword search, competitor results and 10+ years of ad history. See [SpyFu alternatives](/alternatives/spyfu-alternatives).

## Sensor Tower

Covers mobile app data, digital advertising data (sold as Pathmatics), audience data and web insights, including total visits and unique users. It customises pricing for each customer. See [Pathmatics alternatives](/alternatives/pathmatics-alternatives).

## Marxx

We make Marxx, so weigh this. It covers the ad side. It tracks competitor ads on Meta and Google, with an AI search over 100M+ ads back to 2022, and it reads your connected Meta ad account in full. See [competitor tracking](/features/competitor-tracking).

## How to choose

1. Name the question: traffic, search, apps or ads.
2. Check how many users the plan includes.
3. Check historical data. Three months will not show a seasonal sale.
4. For the ad question alone, see [how to find a competitor's ad spend](/guides/how-to-find-competitor-ad-spend).

## FAQ

### Is there a free Similarweb alternative?

Similarweb itself shows free data on its site, but only a high-level sample. For ads, the Meta Ad Library and Google Ads Transparency Center are free.

### Which alternative is cheapest?

SpyFu Basic at $39 a month is the lowest paid price here. It is a keyword and ad tool, so check that it answers the questions you use Similarweb for.

### Does Similarweb have a free trial?

Yes. Its self-serve packages show a "Try for free" button, and its FAQ says you can start a free trial.

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