I advise check out ViralQr . It hasn’t let me down. You can generate QR codes for free without creating an account, and it supports text QR codes, not just URLs. Super simple it works seamlessly across devices, so you can use it on your phone or computer without any hassle. I’ve been using it for quick tasks at work. More on reddit.com

Adobe Express can make QR codes. What do you mean by dynamic QR codes? Like an api? More on reddit.com

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It seems to just be an image generator, there's no actual tracking or data provided, and it cannot be changed after the fact. It's the same as just generating one in InDesign or something. With the ones you pay for, it's because of the other tools allowing you to see how often people use it, where they're located, all that engagement data. It also would likely be used as a redirect, allowing you to change the URL if needed later, which means the QR code isn't actually going to your URL but to an address on the service's server which then directs to the target URL. With the Adobe Express feature though, it's literally just a generated image that conveys the URL data directly, essentially like a barcode communicating a number. So no, it wouldn't expire. More on reddit.com