I hacked together an app that lets you charge anywhere in the US
Hi HN, Long time reader, first time poster. The EV charging infrastructure in the US is quite a mess (unlike the EU), where we have very few roaming options and the apps suck to use. Have been spending the past year building a native Swift app which lets you charge with over 7 networks, and it's really easy to use. I've seen a lot of threads on HN on this topic so thought I'd share it here :) iOS: https://apps.apple.com/us/app/porta-charge/id6449201933 Sorry that it's not on Android yet... I made a web app for the time being, which lets you start a charge from…
What it does
In the maker’s words, at launch
Hi HN, Long time reader, first time poster. The EV charging infrastructure in the US is quite a mess (unlike the EU), where we have very few roaming options and the apps suck to use. Have been spending the past year building a native Swift app which lets you charge with over 7 networks, and it's really easy to use. I've seen a lot of threads on HN on this topic so thought I'd share it here :) iOS: https://apps.apple.com/us/app/porta-charge/id6449201933 Sorry that it's not on Android yet... I made a web app for the time being, which lets you start a charge from our web app on mobile, but the MapKit JS library from Apple is very meh / slow and in the process of switching it out... https://portacharging.com Any feedback is super appreciated! Thank you
Does the same job
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- AFA free HN iPhone/iPad app I launched a few months ago2012 · itunes.apple.com · ▲40
I actually started it June 2011 to learn iOS, launched it in September, and have been steadily adding features and making improvements. It's something I use every day and I hope other people find it useful. Enjoy!



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Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
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