Recommended ad free QR code scanning apps for Android phones

This is my list of recommended QR code scanners:

Based off the QR code engine from Denso Wave, inventors of QR code. No ads.
QRQR app:
https://play.google.com/store/apps/details?id=com.arara.q

From the ZXing dev team of the popular open source barcode decoder used by majority of QRcode apps. No ads, open sourced.
Barcode scanner:
https://play.google.com/store/apps/details?id=com.google.zxing.client.android

From member of ZXing, enhanced version of original barcode scanner app. No ads.
Barcode Scanner+ (Plus/Simple)
https://play.google.com/store/apps/details?id=com.srowen.bs.android
https://play.google.com/store/apps/details?id=com.srowen.bs.android.simple

Alternatively, most Android phones that include Google Assistant can use the Lens feature to scan QR code. It may require a few more taps though.
https://www.howtogeek.com/410037/how-to-scan-qr-codes-on-android/