I had different pads in my lifetime and none of them worked. Ended up with this one for around $10 with a super nice case that does 90% pf the job.
Regarding Cleanshot I can’t imagine what group is it aimed for. For devs standard screenshot is more than enough
For designers and creators they know how to use much powerful tools. Also screenshotting does not sound like a task for $2 per month 
