I build apps with Claude Code, and I test them by having the AI click through the UI with Playwright. That's enough to check that things work as specified and nothing is broken.

But I think the purpose is different when an AI tries it and when a person tries it. To put it in extreme terms, AI is for UI and people are for UX. People find UI problems too, though: in my music player, songs got blocked from playing in Safari on a real iPad, and I only found it by using it myself. The things found in this article, like the jokes that didn't land or not knowing what the tool even does, are on the side only people can find.

(I wrote this in Japanese and used AI to translate it.)

Around 2010 I made music videos for a Vocaloid producer. Back then, people sometimes said Hatsune Miku songs were worth less because a machine was singing. I didn't think so, and in the end the songs were accepted because they were good.

Of course, Vocaloid songs were still written by people, which is different from AI making the whole song. Even so, I think what matters to listeners is the quality.

(I wrote this in Japanese and used AI to translate it.)

Around 2010-2012, at the peak of the Vocaloid boom, I made music videos for a Vocaloid producer. I skipped university for days to edit videos, and it was honestly the most fulfilling time of my life. Lately Vocaloid songs seem to be showing up on YouTube again, so I thought now was the time to give something back. I built it together with Claude Code.

In my opinion, Vocaloid is mainly about the songs, not the videos. But there aren't many services focused on the songs. YouTube and Niconico are video services. YouTube Music mixes covers and unauthorized reuploads in with the originals, and its search isn't great, so it's hard to reach the song you want among the huge number of Vocaloid songs.

Features:

- Browse by voicebank, year, or producer

- Favorite songs and producers (sign in with Google to sync across devices)

- Continuous play, shuffle, and radio

- A picture-in-picture-like mini player

- Sleep timer

- Both YouTube and Niconico

- Add to home screen to use it as an app (Android, iOS, PC)

- Theme colors based on Vocaloid characters

Because of technical limits, background playback and continuous Niconico playback on iOS Safari are hard to support.

As of October 2026 there are about 30,000 songs, 800 producers, and 700 singers, and I add more every week. It's completely free. If a song you're looking for is missing, let me know.

English isn't my first language, so I wrote this in Japanese and used AI to translate it.

Comments URL: https://news.ycombinator.com/item?id=50045704

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Comments URL: https://news.ycombinator.com/item?id=49405173

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Instead of searching through calendar events manually, Galopen automatically detects upcoming events and opens the correct meeting link at the right time.

It’s macOS-only and built with Tauri. I originally made similar apps in Electron, but the bundle size was too large, so I migrated everything to Tauri to keep it lightweight.

Website: https://galopen.kkweb.io/

Curious what others think: - Would you prefer full automation or confirmation before opening? - Any edge cases I should consider?

Would appreciate any feedback.

Comments URL: https://news.ycombinator.com/item?id=47058928

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