Privacy Policy — UUID Generator
Last updated 25 August 2026. Applies to the Android app com.tahatec.uuid_generator.
The short version
The app generates and inspects UUIDs on your device. No UUID you generate or paste in is ever transmitted anywhere, and the app needs no network connection to do its job. What network access it has is used by the advertising, crash reporting and analytics components described below, and by nothing else.
UUIDs you generate or inspect
These never leave the device. There is no server, no account and no sync. Generation happens locally, using the operating system's cryptographic random source; inspection is arithmetic on the value you pasted.
The app can keep a short list — at most 50 entries — of UUIDs you copy or inspect, so you can return to one. It is stored in the app's own private storage on the device. You can switch the list off in Settings, which clears what is already stored immediately, and uninstalling the app removes it.
Unlike some apps of this kind, that list is included in Android's own backup, so it may be copied to your Google account or to a new phone during device transfer along with your language, theme and format preferences. That is a deliberate choice: nothing the app stores is a credential, and it means your settings survive a new device. If you would rather it did not, turn the list off in Settings, or turn off backup for this app in Android's system settings.
Your MAC address
Versions 1 and 6 of the UUID specification include a "node" field which was originally the network hardware address of the machine. This app never reads your MAC address. It uses 48 bits from the cryptographic random source with the multicast bit set, which is how RFC 9562 says to mark a node that is not a hardware address, and it generates a new one each time the app starts. The app does not request, and does not hold, any permission that would let it read a hardware identifier.
What is collected, and by whom
The app itself collects nothing. Three third-party components do, under their own privacy policies:
Google AdMob — serves the banner and occasional full-screen adverts, and may use an advertising identifier and coarse device and usage signals to do so. Google's advertising policy. Meta Audience Network may serve adverts through AdMob's mediation, under Meta's policy.
Firebase Analytics — anonymous, aggregated usage events: which UUID version was generated, roughly how many at once, which output form, which language, which settings were changed, and which inspection findings appeared. No UUID, and no part of one, is ever included in an analytics event. Not the value, not a namespace, not a name, not the node field. Firebase privacy.
Firebase Crashlytics — if the app crashes, a stack trace plus device model and OS version, so the fault can be fixed. Crash reports never contain any UUID or any text you entered.
Firebase Cloud Messaging is used to send occasional notes about new versions of the app. Every install is subscribed to one broadcast topic; the developer does not hold a list of device tokens and cannot message an individual device.
Ad consent in the EEA, the UK and Switzerland
Where required, a consent form from Google's User Messaging Platform appears before any advert is requested, and your answer is respected for personalised advertising. You can change it at any time from Settings → Ad privacy choices, which appears in the regions where it applies.
Permissions the app requests
INTERNET — for adverts, analytics, crash reports and push notifications only. Generation and inspection do not use it, and the app is fully usable with no connection.
POST_NOTIFICATIONS — to show the notifications described above. You are asked once, after you have actually used the app, and declining costs you nothing else.
The app requests no access to your contacts, location, camera, microphone, files, phone state or network hardware identifiers.
Children
The app is a developer utility and is not directed at children. It collects nothing that identifies a person.
Your choices
Turn the recent list off in Settings — it is cleared at once.
Reset or delete your advertising identifier in Android Settings → Privacy → Ads.
Change your ad consent answer in Settings, where that applies.
Turn notifications off in Android's app settings.
Uninstall the app, which removes everything it stored on the device.
Changes
If this policy changes, the date at the top changes with it, and a material change will be noted in the app's release notes.
Contact
Questions about this policy, or about anything the app does:
support@tahatec.com.