The A1 symbol on Micro-SD cards tell you if it is fast enough for apps - NotebookCheck.net News
16GB Premier Micro SD Card MicroSDXC / SDHC USHS-I Class 10 TF Flash Memory Card with Adapter V10 A1 Spead up to 50 MB/s, Video Full HD - Walmart.com
A1 vs A2 SD Card Ratings Explained (2023)
Gigastone] Micro SD Card 32GB 5-Pack, Camera Plus, MicroSDHC Memory Card for Video Camera, Wyze Cam, Security Camera, Roku, Full HD Video Recording, UHS-I U1 A1 Class 10, up to 90MB/s, with
Gigastone - 128GB Micro SD Card, Camera Plus, UHS-I U3 A1 Class Gigastone