AI SEO and Content Optimization Tools: Prices and Free Tiers

Updated 2026-10-27 · No hands-on testing, no scores

All-in-one SEO suites, AI content optimizers, keyword tools and free audit tools, including tools that check visibility in AI assistants.

At a glance

Tool	Lowest listed price	Free tier or trial
Free Micro Apps (AI tools) (owned)	Free (no paid plans listed)	Free to use; most tools work without an account.
Smart SEO Scanner (owned)	Free (no paid plans listed)	The SEO report is free and needs no account. The AI visibility check is also free, with a small daily limit per visitor.
Alli AI	not stated: plan prices didn’t render in the page text we read on 2026-10-18	10-day free trial on all plans.
Frase	Starter: $39/month billed yearly ($49 monthly)	7-day free trial, no credit card.
Mangools	not stated: plan prices didn’t render in the pricing page text we read on 2026-10-18 (affiliate page example lists Basic at $49/month)	Free account with limited lookups (per site).
NEURONwriter	Bronze: $19/month yearly ($23 monthly)	Free trial.
Notra	Free: $0, AI traffic analytics and agent feedback up to 1M events/month (no prompt tracking)	Free plan for AI crawler and traffic analytics up to 1 million events a month; prompt tracking and the writer need a paid plan.
ReSO AI	Free: one-off AI visibility baseline report, 6 technical fixes and 1 AI-optimized blog	Free one-off audit (baseline report, 6 technical fixes, 1 blog). Ongoing free plan: not stated.
Scalenut	Starter: $59/month list; $24/month limited-time offer when checked (10 prompts)	7-day free trial.
SE Ranking	Core: $103.20/month billed annually ($129 monthly)	14-day free trial, no credit card.
Search Atlas	Starter: $99/month	7-day trial with free onboarding.
Semrush	SEO/AI search plans: $117.33, $165.17 and $248.17 per month billed annually (monthly prices higher)	Free account with limits; 7-day free trial on paid plans.
Surfer	Discovery: $49/month billed yearly	not stated on the pricing page text we read.
WriterZen	Keyword Research: $135 one-time	No free plan stated; 21-day money-back guarantee.

Prices are from each tool’s official pricing page on the date shown in its listing. Alphabetical, with products owned by this site’s owner first and labeled. The order isn’t a ranking.

The tools

Free Micro Apps (AI tools) Owned by the site’s owner

Free Micro Apps is a collection of about 70 small SEO and web tools. Three of them use AI: the AI Meta Title Generator, the AI Meta Description Generator and AI Keyword Cluster Ideas. Each takes a topic or keyword plus optional tone and audience and returns AI-written suggestions. The other tools on the site are standard lookups and generators, not AI.

For: Small business owners, site owners and bloggers, writers, developers and SEO or marketing freelancers (as stated on the site).
Skip it if: Anyone who doesn’t want their input stored: the AI tools page says input and generated text may be stored for evaluation. Also skip if you want an ad-free site (it shows Google AdSense ads).
Price: Free (no paid plans listed) · Free: Free to use; most tools work without an account. · checked 2026-10-18

Full listing and sources · Official site

Smart SEO Scanner Owned by the site’s owner

Enter a domain and Smart SEO Scanner runs 50+ checks in ten groups (search appearance, content, indexability, links, security, speed, mobile, social sharing, structured data and AI-search readiness such as llms.txt and AI crawler access). It gives section scores, the top five fixes in plain English, a PDF report and a site-vs-site comparison. The AI visibility check reads your homepage, writes buyer questions that leave out your brand, puts them to several AI assistants that search the web, and reports whether you were mentioned or cited, your share of voice against competitors, and a to-do list.

For: Local businesses, agencies and freelancers doing pre-sales audits, site owners and marketers, and developers catching missing tags and broken links (as stated on the site).
Skip it if: Anyone who needs repeated AI visibility checks every day (there’s a small daily limit per visitor), or who expects a high score to guarantee rankings (the site says it doesn’t).
Price: Free (no paid plans listed) · Free: The SEO report is free and needs no account. The AI visibility check is also free, with a small daily limit per visitor. · checked 2026-10-18

Full listing and sources · Official site

Alli AI

Alli AI applies on-page SEO, schema, internal links and speed changes across a site through a code snippet, and helps AI crawlers read your pages.

For: Agencies and sites on platforms that are hard to edit directly.
Skip it if: Anyone who wants permanent changes: reviewers note optimizations sit in a JavaScript layer and disappear if you stop paying.
Price: not stated: plan prices didn’t render in the page text we read on 2026-10-18 · Free: 10-day free trial on all plans. · checked 2026-10-18

Full listing and sources · Official site

Frase

Frase builds content briefs from search research, drafts with an AI agent in your brand voice, scores content for Google and AI search, and includes a hosted blog option.

For: Freelancers and content teams producing SEO articles.
Skip it if: AppSumo lifetime-deal buyers: reviewers say lifetime accounts were abandoned or stopped working.
Price: Starter: $39/month billed yearly ($49 monthly) · Free: 7-day free trial, no credit card. · checked 2026-10-18

Full listing and sources · Official site

Mangools

Mangools bundles KWFinder (keyword research), SERPChecker, SERPWatcher (rank tracking), LinkMiner and SiteProfiler in a beginner-friendly package.

For: Bloggers and small sites doing their own keyword research.
Skip it if: Teams needing enterprise-scale data or an all-in-one marketing suite.
Price: not stated: plan prices didn’t render in the pricing page text we read on 2026-10-18 (affiliate page example lists Basic at $49/month) · Free: Free account with limited lookups (per site). · checked 2026-10-18

Full listing and sources · Official site

NEURONwriter

NEURONwriter analyzes top search results to guide content, writes drafts with AI, suggests content ideas and tracks AI visibility, with MCP access for AI agents.

For: Bloggers and small agencies wanting content optimization at a low price.
Skip it if: Writers expecting polished drafts (a reviewer called AI posts superficial) or high query limits on lower plans.
Price: Bronze: $19/month yearly ($23 monthly) · Free: Free trial. · checked 2026-10-18

Full listing and sources · Official site

Notra

Notra tracks how AI assistants talk about your brand. You add the questions buyers ask (typed in, generated from your site, or synced from Google Search Console), pick engines such as ChatGPT, Claude, Gemini, Perplexity, Google AI Overview, Grok and others, and it scans them on a schedule. The dashboard shows mention rate, position and share of voice per engine, prompt and language, keeps every full answer with the pages each engine cited, and can follow a simulated buyer through follow-up questions. For gaps, its writer plans a guide, listicle or comparison from your brand, sitemap and competitors, and then drafts the piece. A developer SDK (@usenotra/geo, for Next.js, Nuxt, Astro, SvelteKit and others) labels visits from 66 known AI agents as training crawls, indexing, live answer fetches or human click-throughs, without a script tag. There is a REST API, an MCP server, an optional zero-data-retention mode, and the code is public on GitHub under the AGPL license. It also keeps its older Studio product for drafting changelogs and posts from GitHub, Linear and Slack. Notra, Inc. is governed by California law per its partner terms; this launch was #6 on Product Hunt on October 27, 2026.

For: Startups, developer-tool companies and agencies that publish content regularly and want to measure, and improve, whether AI assistants recommend them.
Skip it if: Small sites on a tight budget: tracking starts at $100 a month and the free plan only covers AI crawler and traffic analytics, not prompt tracking. Also skip if your site isn’t on one of the supported frameworks and you want the traffic attribution, and remember that AI answers vary from run to run, so treat mention rates as trends rather than exact rankings.
Price: Free: $0, AI traffic analytics and agent feedback up to 1M events/month (no prompt tracking) · Free: Free plan for AI crawler and traffic analytics up to 1 million events a month; prompt tracking and the writer need a paid plan. · checked 2026-10-27

Full listing and sources · Official site

ReSO AI

ReSO tracks whether your brand is named and cited when buyers ask ChatGPT, Perplexity and Google AI Overviews (Claude, Copilot and Gemini on custom plans), maps the buyer prompts that matter, finds citation gaps, and delivers AI-optimized pages and blogs plus technical fixes such as schema, crawler access and indexing issues. Paid plans include monthly strategy calls, so it sits between software and an agency retainer.

For: Funded startups and marketing teams that want AI-search tracking and someone producing the content and fixes each month.
Skip it if: Solo founders and small sites on a budget: the only listed paid plan is $599 a month. Also skip if you just want a self-serve rank tracker; some fixes still need your own developer, per the FAQ.
Price: Free: one-off AI visibility baseline report, 6 technical fixes and 1 AI-optimized blog · Free: Free one-off audit (baseline report, 6 technical fixes, 1 blog). Ongoing free plan: not stated. · checked 2026-10-22

Full listing and sources · Official site

Scalenut

Scalenut tracks how your brand appears in AI answers, recommends actions and generates GEO/SEO content, and offers expert-led services.

For: Small teams starting to track AI search visibility.
Skip it if: Anyone who would buy before testing (a reviewer regretted it) or who dislikes heavy sales email.
Price: Starter: $59/month list; $24/month limited-time offer when checked (10 prompts) · Free: 7-day free trial. · checked 2026-10-18

Full listing and sources · Official site

SE Ranking

SE Ranking tracks keyword rankings, audits sites, researches competitors and backlinks, and tracks AI-search visibility (SE Visible), with local SEO and reporting tools.

For: Agencies and in-house teams wanting rank tracking and audits at a moderate price.
Skip it if: Anyone who needs uninterrupted rank data: reviewers report outages and inaccurate scans.
Price: Core: $103.20/month billed annually ($129 monthly) · Free: 14-day free trial, no credit card. · checked 2026-10-18

Full listing and sources · Official site

Search Atlas

Search Atlas automates on-page SEO fixes with OTTO, writes content, tracks rankings and AI visibility and offers white-label agency tools, billed in universal credits.

For: Agencies wanting automated SEO changes across client sites.
Skip it if: Anyone who needs predictable billing: reviewers report unexpected plan charges and refund trouble.
Price: Starter: $99/month · Free: 7-day trial with free onboarding. · checked 2026-10-18

Full listing and sources · Official site

Semrush

Semrush covers keyword research, competitor analysis, site audits, rank tracking, backlinks and content tools, plus tracking of how brands appear in AI answers. It also offers an API and MCP server.

For: Marketing teams and agencies who want one broad SEO data platform.
Skip it if: Anyone testing it casually: many recent reviewers say trials converted to charges and refunds were refused.
Price: SEO/AI search plans: $117.33, $165.17 and $248.17 per month billed annually (monthly prices higher) · Free: Free account with limits; 7-day free trial on paid plans. · checked 2026-10-18

Full listing and sources · Official site

Surfer

Surfer scores and optimizes content against top-ranking pages, drafts articles with AI, builds topical maps and tracks brand visibility in ChatGPT, Gemini and other AI search.

For: Content teams optimizing articles for Google and AI search.
Skip it if: Long-time users on old plans may face big price rises (a reviewer’s bill went from €66 to over €230).
Price: Discovery: $49/month billed yearly · Free: not stated on the pricing page text we read. · checked 2026-10-18

Full listing and sources · Official site

WriterZen

WriterZen offers topic discovery, keyword research and clustering, and an AI-assisted content editor, sold for a one-time payment.

For: Budget SEO writers who prefer a one-time purchase.
Skip it if: Anyone wanting an actively updated tool: a recent reviewer says it hasn’t been updated since 2024.
Price: Keyword Research: $135 one-time · Free: No free plan stated; 21-day money-back guarantee. · checked 2026-10-18

Full listing and sources · Official site