TL;DR
- Otterly is a focused, affordable AI-visibility monitor: it tracks how often ChatGPT, Perplexity, Gemini, and other engines mention your brand across a set of prompts. That's its whole job, and it does it across several engines.
- AuditSpark is a website audit that also scores your AI visibility. It evaluates your entire site across 15 categories, gives you a free AI/GEO readiness score, and — with the AI Visibility add-on — measures whether engines cite you. The difference: it tells you what to fix, not just what's happening.
- Pick Otterly if all you want is to monitor brand mentions across many AI engines.
- Pick AuditSpark if you want to understand and improve your whole website — for both human visitors and AI engines — with a free tier and a one-time option, not just a tracking dashboard.
At a glance
| AuditSpark | Otterly | |
|---|---|---|
| What it is | Full website audit + AI/GEO readiness + AI visibility | AI-visibility monitoring |
| Website audit (UX, SEO, conversion, performance…) | ✓ 15 categories | ✗ |
| Free AI/GEO readiness score | ✓ on every report | ✗ |
| Off-site AI citation tracking | ✓ (add-on) | ✓ (core) |
| Engines tracked (off-site) | Claude + web search today (more on the roadmap) | ChatGPT, Perplexity, Google AI Overviews |
| Tells you what to fix | ✓ prioritized roadmap | ✗ monitoring only |
| Free tier | ✓ (score + summary + readiness) | ✗ (7-day trial) |
| One-time option | ✓ $39 Pro Report | ✗ subscription only |
| Entry price | Free · $39 once · $79/mo | from ~$27/mo |
What Otterly does well
Credit where it's due: Otterly is purpose-built for one thing — telling you how visible your brand is inside AI answers — and it's affordable and multi-engine. If your only question is "how often do ChatGPT, Perplexity, and Gemini mention us, and is that trending up?", a dedicated monitor like Otterly answers it directly, and it watches more engines than AuditSpark's off-site add-on does today. If pure cross-engine monitoring breadth is your single most important requirement, that's a real point in Otterly's favor.
Where AuditSpark is different
AuditSpark isn't primarily a monitor — it's an audit. Monitoring tells you that you're under-cited; an audit tells you why, and what to do about it.
- It scores your whole site, not just your AI mentions. 15 categories — UX, conversion, messaging, SEO, performance, accessibility, trust, and more — because AI visibility doesn't exist in a vacuum: the same clarity and structure that helps humans convert is what makes a page citable.
- The AI/GEO readiness score is free, on every report. That's the deterministic, on-site half of AI visibility — schema, semantic HTML, E-E-A-T, AI-crawler policy (GPTBot, ClaudeBot, etc.). Otterly doesn't audit your site, so it can't tell you this.
- It tells you what to fix. Every audit ends in a prioritized 30/60/90-day roadmap. Monitoring shows you a number; AuditSpark shows you the next move.
- There's a free tier and a $39 one-time report. You can see where you stand for free, or buy a single full report without a subscription — neither of which a monitoring subscription offers.
Which should you choose?
- Choose Otterly if you specifically want ongoing, multi-engine monitoring of your brand's AI mentions and you don't need a website audit.
- Choose AuditSpark if you want to diagnose and improve your entire website — for humans and AI — in one tool, with the AI-visibility piece included as part of the bigger picture, plus a free tier and a one-time option.
They're not really the same product: one is a tracker, the other is an audit that happens to include AI visibility. Many teams would get more from understanding and fixing their site than from a mentions dashboard alone — but if you've already done the fixing and just want to watch the needle across every engine, a dedicated monitor is the right tool.
FAQ
Is AuditSpark an alternative to Otterly? Partly. AuditSpark includes AI-visibility tracking, so it covers Otterly's core use case — but it's built as a full website audit, not a pure monitoring tool. If you only want monitoring, Otterly is more specialized; if you want the audit and the visibility picture, AuditSpark does both.
Does AuditSpark track AI visibility across multiple engines? AuditSpark's free AI/GEO readiness check evaluates your site for all the major engines' crawlers. The paid off-site visibility add-on currently probes via Claude with live web search, with additional engines on the roadmap. Otterly tracks more engines for off-site monitoring today, so if multi-engine breadth is your priority, factor that in.
What does AuditSpark do that Otterly doesn't? A full 15-category website audit, a free on-site AI/GEO readiness score, and a prioritized roadmap of what to fix — plus a free tier and a $39 one-time report. Otterly is monitoring-only with no website audit.
How much does each cost? AuditSpark: free tier, $39 one-time Pro Report, $79/mo Freelance, $249/mo Agency. Otterly: subscription only, from about $27/mo (10 keywords) up to ~$989/mo (1,000 prompts), with a 7-day trial.
See where you stand — free
Run a free AuditSpark audit to get your score, executive summary, and AI/GEO readiness check in minutes — no account, no card.
See where your own site stands
Run a free AuditSpark AI & GEO Readiness audit — score, executive summary, and the fixes that matter, in minutes.
Run a free audit →Next in the series → AuditSpark vs My Web Audit
Information current as of June 29, 2026. Competitor pricing and features change frequently; check the vendor's own site for the latest before deciding.
Otterly is a trademark of Otterly.AI. This page is for informational purposes only and is not affiliated with, sponsored by, or endorsed by Otterly.AI. All trademarks are the property of their respective owners.