Thymesnow against Search Atlas (OTTO)
OTTO finds the same problems and applies the fix by injecting it with JavaScript, which means AI crawlers never see it and it disappears the day you stop paying.
The context
Search Atlas is the closest direct rival to this platform and the comparison is genuinely narrow: both crawl a site, both find on-page, schema, internal linking and alt text problems, and both apply fixes rather than listing them. The disagreement is entirely about how the fix reaches the page.
OTTO works through a pixel. You add a script tag, and the script rewrites titles, meta descriptions, schema and internal links in the browser after the page loads. That is a real engineering achievement and it solves a real problem, which is that most people cannot get a developer to change their templates.
It also has two consequences that their marketing does not put next to each other. The first is that no major AI crawler runs JavaScript, so every fix applied this way is invisible to the exact engines their AI visibility dashboard measures. The second is that the fix lives in their script, not your HTML, so cancelling removes it. Their own documentation confirms the second point.
Side by side
| Category | Search Atlas (OTTO) | Thymesnow |
|---|---|---|
| How a fix reaches the page | Injected by a JavaScript pixel after the page loads | Written into your CMS through its API, so it is in the served HTML |
| Visible to GPTBot, ClaudeBot, PerplexityBot | No. Those crawlers fetch raw HTML and execute no client-side code | Yes. The change is in the HTML before any script runs |
| What happens when you cancel | Schema, meta changes and redirects revert, per their own docs | The change is in your CMS. There is nothing to remove |
| Undo | Remove the pixel, lose everything at once | Every publish reads and stores the previous value first. Reversing runs the same route backwards |
| Detecting the problem | Not reported | Three checks: content that needs JavaScript, meta set by script, and a named list of the injectors doing it |
| Audit cost | Paid plan required | Free, no account, no card, no API key |
Why people choose this
The fix is in your HTML, so an answer engine can read it
Vercel's crawler study and the 2026 measurements that followed agree that GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot, Meta-ExternalAgent and Bytespider fetch raw HTML and execute none of it. GPTBot downloads JavaScript on about 11.5% of requests and runs none. ClaudeBot about 23.8%, and runs none. A schema fix that only exists after hydration cannot help a visibility score those same engines produce.
Cancelling does not undo your SEO
A fix written into WordPress, Shopify, Webflow or a pull request is yours. It survives churn, a billing failure, or a decision to bring the work in house. That is the difference between owning an asset and renting one.
We check whether anyone is doing this to you
If a previous agency left an injection tool on the site, the audit names it. That check exists because the failure is silent: the dashboard says fixed and the served HTML says otherwise.
When to buy Search Atlas (OTTO) instead
These are real. If one of them describes you, we would rather you bought theirs than churned in month two.
You genuinely cannot change your own templates
If your site is on a platform with no API and no template access, and nobody will give you developer time, a pixel is the only mechanism that works at all. An invisible fix that ships beats a correct fix that does not. Be clear-eyed about what it buys you, which is Google, not the answer engines.
You want one dashboard across a large client roster
Their agency tooling, white-label reporting and client management are more developed than ours. We are per site, per month, and Scale is the tier that handles a portfolio.
You need their keyword and backlink database
They resell a large index. We read your Search Console directly and connect DataForSEO or Moz when you want volumes and link data. If the database itself is the product you are buying, buy theirs.
You want the fix applied in ten seconds with no CMS connection
Adding a script tag is faster than authorising a CMS. If the site is a brochure that will never be measured in an AI answer, the trade may be worth it to you.
What moving actually involves
There is no data to migrate, and that is the uncomfortable part: the fixes applied by the pixel were never in your site, so removing the pixel removes them. Run our audit before you cancel, take the generated fixes, and publish them into your CMS first. Then cancel.
Expect the audit to find work that their dashboard reported as done. That is not a disagreement about severity. It is the difference between a fix in a script and a fix in the HTML.
Questions
Do AI crawlers really not run JavaScript?
Not the major ones. GPTBot, ClaudeBot, PerplexityBot, OAI-SearchBot, Meta-ExternalAgent and Bytespider fetch raw HTML and execute no client-side code. Google's Gemini is the exception because it rides Googlebot's renderer, and Applebot renders too. Onely's February 2026 analysis found that 42% of JavaScript-rendered content never reaches AI systems at all.
So OTTO's fixes do nothing?
They work for Google, which renders JavaScript. They do not reach the answer engines. The specific problem is that the same product sells an AI visibility dashboard and a script-injected schema fix on the same screen, and the second cannot move the first.
Is this a reason to avoid all client-side SEO tools?
It is a reason to know which half of your traffic a given fix can reach, and to put anything you care about into the served HTML. For a site where AI answers are irrelevant, injection is a legitimate trade.
The audit is the comparison that matters
Run it on your own site. No account, no card, and you keep everything it produces.