I'm a graphic designer working in YouTube content production, and I love designing thumbnails. I wanted a way to check mine on my phone, surrounded by other videos, before publishing.

I'd seen web tools for this but couldn't find an Android app that did what I wanted. So I started working on TubePreview.

You add your thumbnail(s) and title(s), and it shows your "video" in a YouTube-style mobile feed. You can also compare up to three options, just titles, just thumbnails or both similar to the A/B testing feature on YouTube. Pull to refresh to cycle through them and shuffle the surrounding videos. There's light and dark mode too.

I'm also a CS student, and this is my first Android app. I used AI-assisted development to help build it. A lot of my time went into getting the UI to look right, especially the feed, since that's where you're actually judging your thumbnail.

I've been working on the idea and the app on and off over the past few months.

It's open source, and the APK is available on GitHub. I'm planning to put it on the Play Store too, with an iOS version after that. Here’s also a short video walkthrough.

If you make YouTube videos, I'd love for you to try it. Thanks!

PUBLIC SERVICE ANNOUNCEMENT:

Some people should not be allowed to play Marvel Rivals with their friends.

I am some people.

My friends are also some people.

We have officially reached the point where I don't know if we're playing the game or actively sabotaging each other.

New video is out. The evidence is available below.

https://youtu.be/QlAPxeAol6Q

At what point does a gaming session become a public safety concern?

Holding the deck solo in ARC Raiders when something falls out of the sky. I keep saying "that's not good." Spoiler: it wasn't.

https://youtube.com/shorts/fhfaXrLJKgg

Channel: WalterWackJob