There are two types of QR Codes that you can generate via Scanova—Static and Dynamic.
A Static QR Code is a basic QR Code (just like a barcode) that is permanent but lacks functionality such as editing content anytime, tracking scans and getting analytics, generating leads, etc. When a Static QR Code is generated, it will work forever without any subscription.
A Dynamic QR Code is an advanced QR Code that is editable, trackable, can be switched on/off, and can generate leads. But unlike a static QR Code, a dynamic works only till the time you have a subscription with QR Code service provider. See our Plans&Pricing.
So to sum it up, the validity depends on the type of QR Code (Static/Dynamic) you create. Note that creation of Static QR Codes is unavailable in Free Trial.