The register
The register lists App Stores Ltd in Caxton, Papworth Everard as a licensed sponsor on Skilled Worker, an entry that goes back to at least 2026. The register records its rating as Worker (A rating).
Companies House lists it as App Stores Ltd, number 12305856, incorporated 2019: 6 years of filings behind the name. Registered office: 10 Fisherman Way, Godmanchester, Huntingdon, PE29 2PP, PE29 2PP. Its filed activity puts it in retail.
A licence says an organisation may sponsor; it does not say it is hiring today. The way to find out is the same as for any employer: the careers page, the job boards, and a direct approach with a UK-style CV that says early that sponsorship would be needed.