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Side-by-side comparison · SEO & Analytics

Screaming Frog SEO Spider vs Writesonic

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Best overall

Screaming Frog SEO Spider

4.0

From £199/user/yr

Writesonic

3.7

From $79/mo

Comparing 2 tools. Add one more if you like.

At a glance

Best overallBest value

Pick it if: Anyone who needs a thorough technical check of a site, especially before or after a redesign or migration.

Easiest to use

Pick it if: Marketing teams and agencies that want to measure and improve how AI assistants talk about their brand.

Overview

AttributeScreaming Frog SEO SpiderWritesonic
In one lineCrawls your whole site the way Google does and lists what's broken.Tracks how AI search talks about your brand and writes SEO content to improve it.
Pricing modelFreemiumPaid
Starting price£199/user/yr$79/mo
Free plan Yes No
Works with Claude Code Yes No

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeScreaming Frog SEO SpiderWritesonic
Overall rating4.0Winner3.7
Ease of useHow quickly someone non-technical gets value from it.
2.5
4.0
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.0
Output qualityHow good the results are before you fix them.
4.5
3.5
Value for moneyWhat you get for the price, including the free plan.
4.5
3.0
Speed & reliabilityHow fast it is and how often it falls over.
4.0
4.0

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeScreaming Frog SEO SpiderWritesonic
Access & platform
Free plan Yes No
Mobile app No–
Desktop app Yes–
Browser extension No–
API access No–
Teams & business
Team workspace No Yes
Enterprise plan or SSO No Yes
Connects to other apps Yes Yes
Open source or self-hosted No No
AI abilities
Works with your files Yes–
Understands images No–
Makes images No No
Makes video No No
Writes code No No
Runs agents or automations No Yes
Learns your brand or style No Yes
Works in many languages Yes Yes
Capabilities score5/ 176/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeScreaming Frog SEO SpiderWritesonic
Plans

Free

Free

Small sites and one-off checks.

Starter

$79/mo billed yearly

A single brand testing AI visibility.

Paid licenceOur pick

£199/user/yr

Agencies and anyone with a site over 500 pages.

Basic

$199/mo billed yearly

Small teams tracking more questions.

GrowthOur pick

$399/mo billed yearly

Teams actively working to raise AI visibility.

Enterprise

Custom

Large brands and agencies.

Which plan to pickThe free version is enough for most small businesses because it includes every feature and only caps the crawl at 500 pages. Buy a licence when your site or your clients' sites go past that. The price is listed in pounds with dollar and euro options at checkout.Start on Starter to see where you stand in AI answers. Growth is the plan for teams who will act on the findings each month, because that is where sentiment and suggested fixes come in.

Key features

AttributeScreaming Frog SEO SpiderWritesonic
Standout features
  • Full site crawl
  • JavaScript rendering
  • Google integrations
  • AI during crawl
  • Crawl comparison
  • Scheduling and command line
  • AI visibility tracking
  • Competitor comparison
  • Sentiment
  • SEO article writer
  • Site audits
  • Action Center

Pros and cons

AttributeScreaming Frog SEO SpiderWritesonic
Pros
  • The most complete technical crawl available
  • Free version includes every feature up to 500 pages
  • Crawl comparison makes migrations far safer
  • Connects to Google data and AI models during the crawl
  • Runs on your own computer, so your data stays with you
  • One of the most complete AI search visibility trackers
  • Shows competitors and cited sources, not just your own score
  • Pairs tracking with content and suggested fixes
  • Free trial without a card
Cons
  • Dated interface that assumes you know technical SEO terms
  • Desktop only, and big crawls need a lot of memory
  • No cloud dashboard or scheduled reports for clients
  • One licence per user adds up for a team
  • Expensive for small businesses, especially month to month
  • Lower plans track only three AI platforms
  • Long record of complaints about charges after cancelling and refused refunds
  • Credits and usage limits that do not roll over
  • Old lifetime-deal customers were cut off from newer features

Who each one is for

AttributeScreaming Frog SEO SpiderWritesonic
Best for
  • Finding broken links
  • Checking redirects after a migration
  • Auditing titles and headings
  • Exporting a full page list
  • Tracking brand mentions in ChatGPT and Gemini
  • Comparing AI visibility with competitors
  • Writing content aimed at AI citations
  • Site audits for SEO
You'll find it used by
  • Technical SEOs
  • Agencies
  • Developers
  • Web designers
  • Marketing teams
  • SEO agencies
  • B2B software companies
  • E-commerce brands

Questions people ask

Which is better, Screaming Frog SEO Spider or Writesonic?

Screaming Frog SEO Spider scores highest overall in our ratings (Screaming Frog SEO Spider 4.0/5 and Writesonic 3.7/5). Screaming Frog SEO Spider is best for finding broken links and checking redirects after a migration. Writesonic is best for tracking brand mentions in ChatGPT and Gemini and Comparing AI visibility with competitors.

Which is cheaper, Screaming Frog SEO Spider or Writesonic?

Screaming Frog SEO Spider: There's a free plan, and paid plans start at £199/user/yr. Writesonic: There's no free plan. Paid plans start at $79/mo.

Which is easier to use, Screaming Frog SEO Spider or Writesonic?

Writesonic rates highest for ease of use in our scores. Marketing teams and agencies that want to measure and improve how AI assistants talk about their brand.

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.

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