No bc the unit itself takes real time pressure and temp readings. It gives you a shoot to firing solution. Your zero isn't impacted as the range is to short to make a difference.
Is that for a 100 yards zero only? Does the G7 accept environmental inputs for zeros that are beyond 100 yards, like 200 or 300?
Reason I ask is the Shooter app does not need original environment info for 100 yard zeros. But Shooter requires them for zeros beyond that since the additional time of flight for a 200 plus zero can start to affect the solution at varying altitudes/pressures.