SimplyScan vs vas
Both scan AI-built apps, but they are shaped differently. SimplyScan grades your whole app in one pass across many categories — security, speed, SEO, accessibility, GDPR — and also audits your GitHub source. vas is security-only and goes deeper on one thing: it signs in with test credentials to check whether one user can reach another's data. Full comparison below, including where SimplyScan wins.
Who wrote this: we build vas, so read accordingly. Every SimplyScan claim below comes from their own public site, checked in August 2026. Where they are better, we have said so.
The short answer
Choose vas if security is the point and your real worry is broken access control. vas signs in and tests whether one user can read another's rows across up to 150 pages, specializing in Supabase and Firebase row-level security.
Choose SimplyScan if you want one cheap report that grades security alongside speed, SEO, accessibility and GDPR, and you want GitHub source auditing in the same tool.
Where vas is stronger
It signs in and tests the access rules
Give vas optional test credentials and it logs in and attempts to read another user's records, across up to 150 pages. SimplyScan's site describes grading the live app and auditing GitHub source, not signed-in access-control testing. The most common critical Supabase mistake — a policy that lets any logged-in user read everyone's rows — only shows up once you are authenticated.
Focused, and backed by data
vas spends its whole scan budget on security depth rather than splitting it across six categories, and it publishes first-party data on the failure mode: across 1,215 AI-built apps, 39% of those on Supabase had a data-exposure finding.
Where SimplyScan wins
One report, many categories. SimplyScan grades security, speed, SEO, AI-visibility, accessibility and GDPR in a single pass. If you want a broad health check rather than a deep security one, that breadth is genuinely useful.
GitHub source auditing. SimplyScan audits your repository source and dependencies. vas reads the deployed app and does not scan source.
Cheap one-off report. SimplyScan's Pro Report is a $14.99 one-time purchase with two rescans, versus vas's monthly plans. For a single pre-launch check, that is lower cost.
Side by side
| SimplyScan | vas | |
|---|---|---|
| Authenticated (signed-in) testing | Not stated | Yes, with test credentials |
| Scope | Security + speed + SEO + a11y + GDPR | Security only, in depth |
| GitHub source auditing | Yes | No |
| Ongoing monitoring | Uptime monitoring | Weekly deep scan on Pro |
| Price | $14.99 report (2 rescans) | Go $19/mo, Pro $39/mo |
Frequently asked
What is the difference between SimplyScan and vas?
SimplyScan grades your whole app in one pass across many categories — security, speed, SEO, AI-visibility, accessibility, GDPR — and scans both a live URL and your GitHub repo. vas is security-only and goes deeper on one thing: it signs in with optional test credentials and checks whether one logged-in user can read another's data, especially through Supabase and Firebase row-level security. If you want one broad report, SimplyScan is strong. If your worry is data exposure through broken access control, vas specializes in it.
How much does SimplyScan cost?
SimplyScan offers a free scan and a Pro Report at $14.99 that includes two free rescans (early-adopter pricing). vas is free for your first scan, then Go is $19/month and Pro is $39/month with weekly deep scans that include authenticated testing.
Does SimplyScan do authenticated testing?
SimplyScan's site does not state signed-in / authenticated testing; it grades the live app and audits your GitHub source. vas signs in with optional test credentials specifically to test access-control rules that only appear once you are logged in, which is where the most common critical Supabase mistake hides.
Go deep on your app's access rules
Run your first vas scan free to see your security score and issue counts. Add test credentials on a paid plan and vas signs in to check whether one user can reach another's data.