JYDMIX USB C to 3x USB3.0 and Micro SD/SD/TF/MMC Adapter. USB C OTG Hub and Card
No need to download APP but require Android smart phones/tablet to be OTG function supportive (NOT compatible with iPhone or iPad). ✅Speedy Sync- The three USB3.0 supports the connection of keyboard, mouse, USB flash drive, Kindle etc.