Before you start
New here?
If you've ever opened GA4's own screens, that's enough. Sign in with the Google account you already use there, and we read the rest read-only.
Who this is for
This page is for a marketer, analyst, or developer running a GA4 data diagnosis for the first time. You don't need to be completely new to GA4, but you don't need to be fluent in it either.
One thing to have ready
A Google account that can open the GA4 property you want diagnosed. Viewer access is enough — you don't need permission to change any settings, and we never ask for it.
Don't have that access?
Copy the sentence below and send it to your GA4 admin or a colleague as-is. Fill in the brackets yourself.
Please add my account [email address] as a Viewer on the GA4 property [property name]. You can do this under GA4 Admin → Property Access Management.
[Temporary] We're still in Google's review
AnalyticScan is still going through Google's app review, so a first-time visitor may see a "Google hasn't verified this app" warning. Following the on-screen prompt (Advanced → Go to AnalyticScan) lets you continue. If access is blocked outright, the login screen's "Trouble signing in?" section lets you request tester access. This notice goes away once the review is complete.
What happens
From signing in to seeing a score usually takes under a minute.
- Sign in
- Pick a property
- Score in about a minute
How to read your result
You get a score out of 100 and a letter grade from A to F. Each grade comes with a one-line verdict.
- AHealthy — you can trust this data for decisions
- BGood — a few metrics have room to improve
- CCaution — some key metrics can't be trusted
- DAt risk — don't base decisions on this data
- FCritical — the collection setup needs a rebuild
Each of the 30 checks is shown in one of four states.
- Pass
- Warning
- Fail
- N/A
An item marked "N/A" is excluded from scoring — it's dropped from the denominator and the score is recalculated out of 100, so a check that doesn't apply to your site never counts against you.
Where free ends and paid begins
The score, the verdict on all 30 checks, and the numbers behind them are all free to see. Buy the full report (₩1,900, per property) only when you need to know what to fix and how, item by item.
What we don't do
The promise is short.
- Read-only access (GA4 · GTM) only
- Your raw data is never stored
- Disconnect at any time
Next step
If you have a Google account with viewer access ready, start the diagnosis now. If you need to sort out access first, send the request sentence above.