Free tool · Step 1

AdMob: from test ads to real ads

Every template ships with Google’s sample IDs so ads work while you test. Before release you swap in the IDs from your own AdMob account, publish an app-ads.txt file and tick a few switches. Paste your IDs below and this page tells you exactly what to change.

1AdMob switch 2Store kit 3Reskin 4iOS

1Which template are you using?

I’m also releasing on iOS (separate AdMob app and IDs)

2Paste your AdMob IDs

Open AdMob

In AdMob, add the app (choose “not published yet” if it isn’t on Google Play), then create one ad unit per format the game uses. IDs never leave your browser; they are checked right here.

Android

App ID *

AdMob → Apps → App settings. Contains a ~ (tilde).

Banner unit ID

Ad units → Banner. Contains a / (slash).

Interstitial unit ID

Ad units → Interstitial.

Rewarded unit ID

Ad units → Rewarded.

App open unit ID

Ad units → App open. Leave empty if you turn app open ads off.

3Make these edits in Unity

Enter a valid App ID and at least one ad unit ID above, with no red marks. Your exact edits appear here.

4app-ads.txt

AdMob reads app-ads.txt from the root of the website you enter as “Website” on your Google Play store listing: https://yourdomain.com/app-ads.txt. Only the domain counts, not the page; www. and m. are ignored, and AdMob looks at most one subdomain up.

A free page on a shared host (for example a site under someone else’s domain) can’t hold a root file, so you need a domain of your own. It can take up to 24 hours for AdMob to see the file.

Generate the file

Publisher ID

AdMob → Settings → Account information, or paste any of your ad IDs.

Other ad networks (optional)

Check it

Developer website (as in your Play listing)

Or paste your app-ads.txt

5Release checklist

0/11

Every test ID is replacedSearch your project for 3940256099942544. No results means no test IDs are left (scripts, assets and scenes).
App ID set in Google Mobile Ads settings tooAssets → Google Mobile Ads → Settings. The template only copies the App ID there when the field is empty.
Debug and test options offVerbose logging, debug mode, UMP debug geography and test devices are for testing only.
Consent message published in AdMobAdMob → Privacy & messaging → create and publish a GDPR message for the EEA, UK and Switzerland. The template shows it through Google’s UMP.
Privacy policy link setIn the template’s Monetization Settings and in the Play listing. Make one in the Store upload kit.
app-ads.txt live on your developer websiteAt the root of the domain you enter as Website in Play Console (step 4 above).
AdMob payment and tax info completeAdMob → Payments. Ads can serve before this, but earnings are held until it is done.
App linked to its store listing in AdMobAfter the app is live on Google Play: AdMob → Apps → App settings → Add app store details. AdMob only reviews and fully serves linked apps.
Closed test done (new personal Play accounts)Accounts created after November 2023 need 12 testers opted in for 14 days before production access.
Target API level 36Required for new apps and updates since 31 August 2026 (Player Settings → Android → Target API Level).
You never tap your own live adsUse test devices (or test IDs in a separate build) while testing. Invalid clicks can get an AdMob account limited.

Ticks are saved in this browser. Sources: Google AdMob Help (app-ads.txt, Privacy & messaging) and Play Console Help (testing requirements, target API level), checked October 2026.

Next step

Store upload kit