This is a simple barcode reader.
No ads. No internet access.

Readable barcode types:
QR Code (EMVCo/JPQR parsing)
EAN-8
EAN-13
Code 128
Code 39
Code 93
UPC-A
UPC-E

Assist:
You are able to open barcode scan by home button long tap.
Settings > Apps & notifications > Advanced > Default apps > Assist & voice input > Assist app > choose barcode capture

History:
When read barcode, save it in device.

Support:
If you want any function about barcode, please let me know.