Honest question, what's or who is this for? The UI is structurally the same. It may load an EVTX a bit faster but doesn't appear to be faster post-load. It presents privacy and/or security risks being a web app.
In terms of security/privacy - this runs entirely in browser. So nothing ever goes anywhere.
Which is fine to state as a claim, but even if fact, no serious IT security department would allow the use of this.