PostHogCustomAppProperties

Name	Type
`$app_build`	`string \| null`
Build number like "1.2.2" or "122"
`$app_name`	`string \| null`
Name of the app as displayed below the icon like "PostHog"
`$app_namespace`	`string \| null`
Namespace of the app usually like "com.posthog.app"
`$app_version`	`string \| null`
Human friendly app version like what a user would see in the app store like "1.2.2"
`$device_manufacturer`	`string \| null`
Manufacturer like "Apple", "Samsung" or "Android"
`$device_model`	`string \| null`
Model identifier like "iPhone13,2" or "SM-S921B"
`$device_name`	`string \| null`
Readable model name like "iPhone 12" or "Samsung Galaxy S24"
`$device_type`	`string \| null`
Device type ("Mobile" \| "Desktop" \| "Web")
`$locale`	`string \| null`
Locale (language) of the device like "en-US"
`$os_name`	`string \| null`
Operating system name like iOS or Android
`$os_version`	`string \| null`
Operating system version "14.0"
`$timezone`	`string \| null`
Timezone of the device like "Europe/Berlin"