AAID - Advertising ID Checker

This app shows your device's advertising ID (AAID) the moment it opens. The value normally sits deep inside the system Settings app and is awkward to copy by long-pressing; here it is on the first screen in large type, with copy and share one tap away. ■ Your advertising ID, immediately · Open the app and the device's advertising ID (AAID/GAID) is already on screen. No digging through Settings. · The 36-character value is split into two readable lines, and you can long-press to select it directly. · Copy puts the whole value on the clipboard — the display wraps to two lines, but what gets copied is one unbroken string. · Share sends it straight to a messenger, notes app, or email. ■ Register an AdMob test device · The Guide tab walks through registering a test device in the AdMob console, in four steps. · If your own taps are counted as real ad clicks, they can be treated as invalid activity. A registered test device only ever sees test ads. · A shortcut to the system ads settings — where you can reset the ID or turn personalized ads off — is built into the app. ■ It shows the state too · Whether "Limit ad tracking" is turned on for this device. · When it is on, apps only receive a zero-filled ID. The app explains that on the same screen, so all-zeros does not read as a broken app. · Device model and Android version on one line, so you can tell which phone a value belongs to when you have several test devices. · Devices without Google Play services are called out separately — there is no advertising ID to read on those at all. ■ Never sent anywhere · The app only displays your advertising ID. It is never uploaded to a developer server and never stored on the device. · No account, no sign-in. There is no server at all. · The value lives in memory while the app is open and is gone when it closes. · Copying and sharing happen only when you tap those buttons. · No location, camera, contacts, or storage permissions. Internet access is used only to show ads. ■ Who it is for · App developers who need to register an AdMob test device · Anyone wiring up an ad SDK or analytics and checking device identifiers · Anyone who wants to know what their advertising ID is and how to reset it · Anyone looking for where to turn personalized ads off ■ How it was built · Failures are split into three distinct cases with different explanations, because "all zeros" and "cannot read it" have different causes. · Change the value in system ads settings and come back — the app re-reads it and updates right away. · Korean and English are both supported, and language and theme can be changed inside the app. · Light and dark themes are both supported. This is a free, ad-supported app. ---