Why is the SPEEDi better?
I was 1 click away from purchasing a similar unit online until I researched them closely and found them to be expensive, flimsy, noisy, and manufactured using 3D printing. These components have extremely small and precise features that are near impossible to achieve via 3D printing, so I thought, “I can make one better”. Definitely not a walk in the park, researching, developing, finding the limits and perfecting the finish.
As opposed to electronic dongles, the SPEEDi is a fit and forget mechanical device, which doesn't change any factory settings or limits, installed with simple bike tools you probably already have.
Electronic dongles require a more in depth installation, sometimes including removing cranks with the purchase of special tools. They can include lots of pressing of buttons to activate and change settings, and if you don't do it correctly you risk throwing ECM trouble codes.
I don't know about you, but I like to just get on my bike and ride!