Hey Vikash,
Every order on baby-online-nz.myshopify.com attributed to “Mobile App” (at least in the past 30 days) was attributed to a private app of the same name. The app_id of this private app matches that which shows on the order.
Each private app on each shop will always have a unique ID, as each private app is its own instance of an API client, so across shops the ID will be different in this case. If the orders were in fact processed by the sales channel, then the ID would be the same across shops since any one channel can be installed across many shops.
Cheers.