# Identifier for vendor (IDFV)

An Apple identifier shared by qualifying apps from the same vendor on a device.

An Apple identifier shared by qualifying apps from the same vendor on a device.

## An example

A developer compares permitted activity across its own apps using the vendor identifier.

## Why it matters

It is not an unrestricted cross-company advertising identifier, and its lifecycle follows Apple's rules.

## Reference

[Apple vendor identifier documentation](https://developer.apple.com/documentation/uikit/uidevice/identifierforvendor).


## Related terms
- [Attribution](https://jolts.xyz/resources/glossary/attribution)
- [Device ID](https://jolts.xyz/resources/glossary/device-id)
- [Mobile measurement partner (MMP)](https://jolts.xyz/resources/glossary/mobile-measurement-partner)
- [Privacy thresholds](https://jolts.xyz/resources/glossary/privacy-thresholds)

## Next step

[Explore advertising](https://jolts.xyz/advertisers) or [monetize your AI app](https://jolts.xyz/publishers).