I travel a lot. And every single time, I'm standing in an airport Googling "do I need an adapter for Thailand" while my boarding group is already lining up. The existing tools for this are bad. They're buried in blog posts from 2016 with popup ads, or they're a wall of text that doesn't actually answer the question. I already had most of the data. My destination guides on Vientapps cover dozens of countries, and each one tracks the local plug type and voltage. The pieces were sitting there. I just needed to turn them into something interactive. What it does You pick where you're from and where you're going. It tells you: do you need an adapter, do you need a voltage converter, or do you need nothing. It covers 221 countries, all 15 plug types (A through O), and links you to the right adapter on Amazon if you need one. There's a collapsible section with plug diagrams, a voltage comparison, and a converter guide. A table of popular routes (US to UK, US to France, etc.) with pre-computed answers.…