Hi PH, I m Andriana, co-founder of k dlo.

k dlo is a sales workspace for people who build B2B products.

After our launch here we looked at our data and saw a clear pattern: asking for a card was stopping people before they even saw what the product does. So we acted on it. k dlo now has a 7-day trial with no card.

This isn t an easy decision for a small team with no funding. Every trial costs us real money in AI tokens. We re doing it because right now one honest opinion from a real user is worth more to us than anything else!

Last spring, I asked ChatGPT, Perplexity and Gemini the same buyer questions ("best X for Y") via live API and logged who they recommend. Two numbers rewired how I think about AI search visibility:

• On ~98% of commercial questions, the engines name specific brands.

• All three engines agreed on a common pick on just 56% of questions.

Bonus: Perplexity's most-cited source is Reddit on ~87% of questions.

Yesterday, I announced Product Hunt Gems, a Reddit community and newsletter for great products that were not featured on Product Hunt.

Our team has looked for such "hidden gems" since the beginning of the year, and below you will find some of the best ones that were launched in January. You'll find several more in our newsletter. I will post gems from February here tomorrow.

Hi PH! I built Advance Poster, a Chrome extension that automatically posts to your Facebook groups.

Write one post, pick your groups, and it publishes everywhere with pauses between posts, a unique wording for each group, and a link to every post. It can also write texts and create images with AI.

Free for 5 days, no card needed. I'd love your honest feedback: what's missing for you?
Advance Poster: post to all your Facebook groups in one click (1-minute overview)
Get Advance Poster

Hi everyone, I'm Jim, an independent iPhone developer. Cognilo launches on Product Hunt tomorrow, Oct 21.

Five puzzles. About six minutes. Your next personal best.

- The Daily 5: five short brain games picked for your level across memory, focus, logic, numbers, spatial and language.

- Untimed by default; choose Precision, timed Sprint or unrated Zen.

I'm building MediDue, a planned English-language iPhone app for home medicine inventory. The idea starts with a practical question: could a simple list make it easier to check what is at home, where it is stored, how much is left, and which expiry dates need a closer look?

I currently have a browser prototype. It records medicine names, expiry dates, quantities and storage locations, with views for inventory and expiry or low-stock tasks. Users check the information they enter. The iPhone app is still in development, with no public download available yet.

The design problem I'm working through is the effort needed to keep those records useful. Entering a quantity once is straightforward; keeping it accurate as things get used or moved is harder. Adding more fields might make the first record more complete while also making every later update more work. I don't have user research results to settle that trade-off yet.

I'd like to hear from people who have kept a household inventory, or built a tool people use only occasionally:

Hey everyone! Excited to share something we've been working on Img2Sheet is now offering a Lifetime Deal.

What is Img2Sheet? Img2Sheet converts images into structured spreadsheets instantly. Upload a photo of a table, invoice, receipt, or any data-heavy image and get a clean Google Sheet back in seconds.

The Lifetime Deal Two Tiers:

• Starter Pay once 1,000 credits/month

• Pro Pay once 5,000 credits/month

Vietnamese customs and beliefs are scattered: in older relatives' memory, in classical books few can read, and online in copied pages with no sources. That gap gets exploited. Families pay for rituals and charms they cannot check.

Nh t Nguy t builds the knowledge first:

- 1,710 articles in Vietnamese, English and Chinese, citing classical texts and licensed press line by line, each claim labelled as calendar fact, recorded custom or folk belief

- A lunar calendar computed in Vietnam time and tested against NASA and Paris Observatory data

If you re shipping an AI chatbot or agent and don t know where to start with security testing, I built five free tools in PromptBrake to help.

Get prompt-injection inputs to try, map risks to test ideas, plan release checks, and build response or agent tool-call test packs. No PromptBrake account needed.

You can use them on the web or through MCP in your AI assistant. For example, ask: Help me prepare tests for instructions hidden in documents my chatbot reads. You get test inputs to run against your own app.

Free tools: https://promptbrake.com/free-tools