Transport minister Grant Shapps said the NHS app might need to change with the rules in just under two weeks.
Removing England’s one-metre plus distancing rule means developers will have to adjust the app’s sensitivity.
He told BBC Breakfast: “As our restrictions change, of course, the app needs to change.
“Things like replacing the one metre plus rule on July 19 might well lead to a review of the way the app itself needs to function.”
When active, it detects the distance between users and the amount of time within this perimeter.
The Government defines close proximity as being within two metres for up to 15 minutes.