@waodao_ai · X

x1shir · V2EX

HowToWhistle：像唱 KTV 一样练习吹口哨 一直想提高吹口哨技巧，搜了一圈发现网上的教程都是文字和视频，练的时候根本不知道自己吹得对不对。 想到可以像 KTV 一样，有个音轨对比，于是干脆自己搓了一个练习网站：[https://howtowhistle.org/]( https://howtowhistle.org/) 核心思路是用浏览器的麦克风做实时音高检测，你对着麦克风吹，页面会显示你当前的音高和目标音的偏差，类似 KTV 唱歌时的实时评分。功能大概有： - 实时音高反馈，能看到自己吹的是哪个音、偏高还是偏低 - 从单音长音开始的渐进式练习，到音阶、再到简单旋律 - 纯前端实现，声音不上传，无需注册 目前还比较简陋，欢迎大家试玩和提建议。

carl_norson · Product Hunt

Linguar Language exchange with real people — and AI on your side

u/MainNail9026 · Reddit

Killing Luma and Partiful in 2026 I built an AI co-host that actually does the event logistics, not just the invite page Every group chat I've been in dies the same way: five people say "we should do something," someone suggests a date, three people don't reply, and it's dead. Currently the tools that exist (Partiful, Luma) are great at making a pretty invite and then sending to an RSVP list. But the invite is the last 10% of the work. The other 90% is picking a place,

@Mohadiz · X

if you love Duolingo but hate the heart limit, then it's yours, I built 100% free, unlimited vocabulary learning across dozens of languages! give it a try

lecsium · Product Hunt

Lecsium Learn languages by reading AI-generated interactive novels

@nopecode369 · X

This completely resonates. I actually poured my entire heart and passion into building for this exact reason. It’s designed as a dedicated home where real travelers, local guides, photographers, and trip planners can finally connect organically

@Palate_Food · X

@stack_panic · X

- marketing without guessing about ICPs.