Self-Promotion
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6d ago

Our 60-second mental math game now runs in the browser, no install needed

Hi PH We launched Math Game here in September as an iOS app. A lot of people don't want to install an app just to try something, so we built a version that runs straight in the browser.

What it is: 60-second rounds of mixed +, , and . Every wrong answer is explained right away, so you learn from the miss instead of just losing points. A little fox keeps you company. Free, no ads, no account.

Try a round: https://mathgameapp.app/en

It's also available in 10 other languages: /ja /ko /es /pt /fr /de /id /hi /tw /cn

Watching VertoX improve week by week is exciting

One of the things I enjoy most while building VertoX is seeing the technology improve week by week.

Patrick Lumban Tobing, our AI/ML Engineer, recently integrated Qwen3-TTS Streaming into our Streaming Speech Translation framework, and honestly, it s exciting to watch everything slowly come together.

Lower latency.
More natural voice output.
Better real-time multilingual communication.

There s still a lot to improve, but seeing the system evolve like this is a great feeling.

Memory turned out to be my retention feature, not my chat feature

When I built Shayari NHE-01, an AI companion with memory and personality, I thought of memory as a chat feature. Something that makes individual conversations better.

A few weeks of watching people use her taught me it's actually a retention feature.

How we got our ChatGPT plugin approved in 6 hours

Hey makers

Last week we submitted mailX to OpenAI as a ChatGPT plugin. It got approved about 6 hours later.

A few people asked me how we did it, so here is everything.

What OpenAI asks for

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14d ago

Free place to copy the exact prompt behind AI images (Halloween edition)

Hi, I'm Yash, the solo founder. I kept seeing great AI images online and wondering what words made them, and the prompt almost never got shared. So I built Promptclay.
What it does: every prompt is free to copy, no account needed. Each prompt page shows which model it was written for (Gemini / Nano Banana, ChatGPT and others) and has a fix for the usual problem of your face changing.
For launch day it's dressed up for Halloween, with 21 prompts: https://promptclay.com/halloween/
It's version one and rough in places. Promptclay doesn't generate images itself, you paste the prompt into the app you already use.
What I'd like feedback on: is the "copy and go" flow clear in the first 10 seconds? What's missing?

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1yr ago

Introducing the Virtual Card Feature — Secure, Transparent, and Flexible

Hey Product Hunt!

We're excited to announce the launch of our Virtual Card feature, designed to solve some of the most common challenges businesses face with shared business cards.

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28d ago

Export invoices + packing lists without retyping buyer details — Trade Paper AI

Invoice: 120 units. Packing list: 100. Which version are you about to send?

This is a fictional example of a document mismatch, not a customer incident. Before sending a revised shipment, compare the invoice reference and buyer, item names and units, quantities, actual cartons and weights, and the two final PDF attachments.

Preparing export invoices and packing lists in separate Word or Excel files? Trade Paper AI lets small export teams save company, buyer and item details, reuse them for a Commercial Invoice, and prepare a separate Packing List PDF. I'm Seonghwan, its founder.

Starter costs KRW 29,000/month for unlimited documents and first-use guidance. It renews monthly until cancelled. Review the final amount and cancellation/refund terms before paying.

VertoX update — getting very close to launch

Hey everyone

Quick update on VertoX.

We ve made a lot of progress on the backend and core systems. We re building our own open-source ASR NMT TTS pipeline and aiming for ~1 second real-time translation.

Right now, we support 17 output languages and 10 input languages, with plans to expand further.

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1mo ago

Launching tonight at midnight PDT: A 3D remake of Lunatic Fringe for iPhone/iPad/macOS

I'm a tech lawyer and ex-founder. I can read code, but beyond HTML and CSS I can't write it. Since my first vibe-coded app in July 2025, I've shipped 15 apps and websites.

The latest two are games for iPhone, iPad and Mac: Lunatic Fling, a 3D tribute to Lunatic Fringe; and Paperwing, a paper-airplane game inspired by Glider, co-developed with our 5-year-old (turns out he's an amazing PM). Both went from prototype to App Store approval in under a week. A third (much bigger) project is currently in the works.

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1yr ago

🎉 We hit #4 on Product Hunt! Here’s what happened

Hey everyone,

I m Alex, solo maker of CoLaunchly, and yesterday I launched it on Product Hunt for the very first time.

I didn t expect much. My only goal was to get into the top 10.

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