[evilduck]

From your description of usage I would say it's not worth it for you.

It is however completely worth it if you want to develop on iOS over SSH. Blink is the only one I've found that has (and can, due to Mosh being GPL) provide Mosh support on iOS, and Mosh is the only thing that makes developing over SSH on iOS tolerable for me for "real work", i.e. a full day's work and not just popping into a server for 10 minutes to configure something. Panic tried to make it work by having Prompt alert you before iOS backgrounds the app and closes the connection but it still means that you can't get up and run to the kitchen or bathroom without losing your connection or really delve into an article or documentation without having to re-foreground Prompt every few minutes. Running tmux/screen helps with any inadvertent disconnects, but Blink just lets you cmd-tab back and resume where you left off and is much less frustrating on spotty connections.

As an aside, Blink is open source and you can build and sideload it yourself pretty easily if you have a paid Apple Developer account. You can also do it on a free account, but you'll need to know a bit more about iOS dev to configure/disable a few things that you can't do for free. Personally after a year or so of that I just ponied up the money and bought the app store version.