What is the best AEO tool for vibe-coded apps?
AEO tools split into two jobs: testing whether AI engines CAN read and cite your site, and tracking whether they DO mention you. CheckVibe (from $0) is the readability tester built for vibe-coded apps — 46 AEO checks with a 7-engine matrix. Otterly ($29/mo) and Knowatoa ($59/mo) are the affordable mention trackers.
TL;DR
- Two tool categories, one goal: CheckVibe tests whether AI engines can technically read, parse, and cite your site; mention trackers (Otterly, Peec, Profound) monitor what AI answers say about your brand.
- Vibe-coded apps need the readability test first — client-rendered SPAs are invisible to AI crawlers no matter how good the content is.
- Cheapest full stack for an indie dev: CheckVibe free/$24 (can they read me?) + HubSpot AEO Grader free snapshot (what do they say?) + Otterly $29/mo when you need continuous tracking.
- Enterprise trackers (Profound $399+/mo real plans, AthenaHQ $295/mo) are excellent but priced for marketing teams.
- All prices verified against vendor pricing pages on June 12, 2026.
Answer Engine Optimization for a vibe-coded app starts with an unglamorous question: when GPTBot or ClaudeBot fetches your site, does it get content or an empty React shell? Most AI-built apps fail that test before any "brand mention tracking" could matter. So this list is organized by job: first the tool that tests machine readability (the prerequisite), then the trackers that monitor your presence in AI answers, ordered by what an indie developer can actually afford.
How we picked
- Does a real, distinct AEO job: readability/access testing, or AI-answer mention tracking.
- Live product with public, verified pricing (checked June 12, 2026).
- Accessible to a solo developer or small team — tools above ~$300/month are listed as honorable mentions with the price stated.
The picks
1.CheckVibe
Free (4 scans/mo) · $24–59/moThe "can AI engines read you?" tester — and the only tool on this list built for vibe-coded apps. 46 AEO checks: AI-crawler access (GPTBot, ClaudeBot, PerplexityBot…), JavaScript-free machine readability, llms.txt, answer-ready content structure, schema depth, entity grounding — scored per engine across ChatGPT, Claude, Perplexity, Google AI, Copilot, Meta AI, and Mistral. Plus 68 SEO checks and 100+ security checks in the same scan.
Best for: Testing AI readability of a vibe-coded app (the prerequisite)
2.HubSpot AEO Grader
Free (one-time snapshot); continuous tracking $50/moA free snapshot of how ChatGPT, Perplexity, and Gemini characterize your brand — sentiment, presence quality, share of voice. One-shot rather than continuous, which makes it the perfect zero-cost first look at the "what do they say?" side.
Best for: Free first snapshot of your AI-answer presence
3.Otterly.AI
From $29/mo (15 prompts, 4 engines); $189/mo standardThe cheapest real continuous tracker: monitors your chosen prompts across ChatGPT, Perplexity, Google AI Overviews, and more, showing when your brand and links appear. The natural step after your site passes the readability test.
Best for: Affordable continuous AI-mention tracking
4.Knowatoa
From $59/mo (3 engines); $199/mo for all 7; free auditAn "AI Search Console" tracking rankings and citations across 7 engines including Claude and Meta AI, with content-gap analysis and weekly reports. Solo-friendly positioning and a free audit to start.
Best for: Multi-engine rank tracking for small teams
5.Peec AI
From €85/mo (50 prompts, 3 models, unlimited users)The analytics-depth pick under ~$100: visibility, position, sentiment, and citation-source analysis across ChatGPT, AI Overviews/AI Mode, Copilot, Perplexity, and Gemini. Unlimited seats even on the starter tier.
Best for: Deeper AI-visibility analytics on a budget
6.Semrush AI Visibility Toolkit
$99/mo per domainAI Visibility Score, share of voice, sentiment, and 25 tracked prompts — plus a technical site audit for AI-crawler accessibility (the closest overlap with CheckVibe's job on this list). The pick if you already live in Semrush.
Best for: Teams already on Semrush
7.Profound
Starter $99/mo (ChatGPT only); Growth $399/mo (3 engines)The enterprise reference for answer-engine insights: prompt volumes, citation analytics, and AI-crawler traffic attribution across up to 10 engines on enterprise plans. The $99 starter is ChatGPT-only — budget $399+ for the real product.
Best for: Enterprise-grade answer-engine analytics
8.AthenaHQ
$295/mo self-serve ($245/mo annual)A GEO command center: monitoring across 8+ LLMs plus action tooling — managed robots.txt and llms.txt, citation intelligence, GA4/GSC integration. The "when you graduate" pick once AI search drives real revenue.
Best for: Full GEO operations for growing companies
Good tools we left off (and why)
- Ahrefs Brand Radar: $398–699/mo add-on on top of an Ahrefs plan — team budgets only.
- Scrunch AI: $250+/mo enterprise CX platform; its agent-experience layer is interesting but not indie-priced.
- Goodie AI: No public pricing (demo-only) as of June 2026 — can't be evaluated on cost.
Start with the free scan.
100+ security checks, 68 SEO checks, 46 AEO checks. One URL, about 30 seconds.
Run a free CheckVibe scanFAQ
What does an AEO tool actually do?
Two different jobs travel under the name. Readability testers (CheckVibe) verify AI engines can crawl, parse, and extract answers from your site — crawler permissions, JavaScript-free rendering, llms.txt, schema. Mention trackers (Otterly, Peec, Profound) run prompts against AI engines and report whether your brand gets named or cited. You need the first to have any chance at the second.
Why do vibe-coded apps specifically need AEO testing?
Because most ship as client-rendered SPAs. AI crawlers don't execute JavaScript at scale, so a Lovable or Bolt app typically serves them an empty HTML shell — invisible regardless of content quality. The readability test catches this; a mention tracker would just report zeros without telling you why.
What's the cheapest way to cover AEO completely?
Free tier: CheckVibe's free scan (can engines read you?) plus HubSpot's free AEO Grader (what do they currently say?). First paid step: fix what the readability scan found, then add Otterly at $29/mo for continuous mention tracking. Total: $29/mo — or $53 with CheckVibe Starter for ongoing re-scans.
Do I need both a readability tester and a mention tracker?
Eventually, yes — they answer different questions. But sequence matters: readability first. Tracking mentions of a site AI engines can't read just measures a flat zero. Once the scan shows engines can read and extract your content, tracking tells you whether the market is responding.
Does Google Search Console show AI citations?
No. GSC covers classic Google Search (and some AI Overviews impressions are folded into totals without being broken out). None of ChatGPT, Claude, or Perplexity offer a publisher console as of June 2026 — which is exactly the gap these tools fill.
Keep reading
Sources
Pricing and feature claims verified against these pages on June 12, 2026.