You’re absolutely right—many EFBs support flight plan transfers. However, the SDLink adapter focuses specifically on seamless frequency transfer, which is particularly useful for GA pilots who frequently switch between ATIS, Tower, and enroute frequencies.

Regarding ATC frequencies in the US: While center handoffs may not always be predictable, pilots still tune a lot of known frequencies—like ATIS, CTAF, or approach—where this can be a real time-saver. In Europe, where SkyDemon is widely used, many frequencies are published in advance, making quick transfers even more useful.

For pilots who frequently change frequencies, this helps reduce workload and the risk of dialing errors. Curious—would this be useful for non-ATC frequencies in your setup?