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Ask HN: What are you working on? (July 2025)

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371–380 of 900 posts

Re: Ask HN: What are you working on? (July 2025)

#371
I'm working on Waywo, a semantic search engine for "What are you working on?" threads powered by new features in Redis 8 like the vector set data structure for semantic search.

Waywo will help users quickly digest hundreds of project descriptions, explore similar projects, deduplicate projects across threads from previous posts, visualize a graph of all projects, and more! I'll be documenting my approach to building this with coding Agents like cursor and Gemini CLI

I'm building Waywo for the Redis Hackathon on DEV.to that is running from now until August 10! Follow me on DEV/GitHub/X (@briancaffey) to see how this project turns out!

Re: Ask HN: What are you working on? (July 2025)

#372

Have you ever wanted to write your life story but found it too overwhelming? I’m developing an app that acts as your personal interviewer, guiding you through your memories and helping you share them with your loved ones. The app is designed for older adults who enjoy reminiscing but struggle to organize their thoughts into a coherent narrative. The goal is to preserve their hard-won insights and pass them down—to fa…

Have you heard of https://www.autobiographer.com/ ? Is it similar, different?

Re: Ask HN: What are you working on? (July 2025)

#373
I’ve been working on an animal management app for the last two years or so. It’s a hobby project so it’s not going very fast. Recently I’ve released a new version with support for one model of a UHF RFID reader. It allows me to count and identify my chickens from up to 15 feet away.

https://youtu.be/_iGn_pZ3IkY?si=x4ijZdAP-suhuJ7Y

https://apps.apple.com/us/app/manger-animal-manager/id674269...

Re: Ask HN: What are you working on? (July 2025)

#374

Earlier quoted context omitted.

Sounds nice! A word of advice, instead of claiming 120 languages, I feel it would be better to focus on a few an ensure that they work well with native speakers.

You are talking about a very different product :) I have spent over a year making sure everything works for many languages. The whole point is to have one interface, for all my languages, big and small. Additionally, please try it out before assuming they’re just claims. I’ve been using it daily for 3 months in 18 languages (roughly one from each major language family), and been in pretty constant contact with native…

Yes, it's a religious website, but it's also the site with the most languages of any site on the 'net, at 1100+ right now. Some of them are downloadable content only, most are web content as well. The translations are done at least in part by native speakers of the target language.

Figured you'd appreciate the complexity of having that many languages on a site. jw.org.

Re: Ask HN: What are you working on? (July 2025)

#375
Some folks I work with have a terabyte of short string records that they regularly scan with regexes to develop classification criteria; it's a prime application for a substring index that can accelerate their queries, but the scale is daunting.

I came up with a suffix-sorting index for this domain that's interestingly simple. Most algos for this use a generalized suffix tree that's built by concatenating all the strings into one giant string and feeding it into a conventional suffix sort, but that has some big constants on the indexing throughput, due I think to the overhead of handling one giant string instead of a bunch of small independent records.

In the latter case, by making the structure slightly simpler and search slightly harder, I can get indexing throughput in the GBps, at least for the sorting part.

The output of that in its simplest form is a 4n or 8n-sized set of int's, but it can be fed further into a compressed rank/select data structure for various space/indexing time/retrieval time tradeoffs, and I don't think those are slow (eg Roaring Bitmaps)

I'll post this on show HN if anybody's interested; I'm still writing up the details, as I've barely gotten the POC code working.

Re: Ask HN: What are you working on? (July 2025)

#376

I'm continuing the work on Cellm, an Excel extension that let's you call LLMs in cell formulas like =PROMPT(A1, "Rate the sentiment of the customer feedback as positive, neutral, or negative"), and then drag the formula down to apply the same prompt to thousands of rows. I built it after my girlfriend had to manually classify 7,500 research papers. Cellm automates that kind of repetitive work. Since we added MCP and…

That’s pretty interesting. I’ve using Airtable’s “field agents” for a similar use case, but would love to use this instead. Does it automatically cache values? (Don’t want to pay for repeat prompts just because one input cell updated)

Re: Ask HN: What are you working on? (July 2025)

#377
post #145

I'm working on an update to my flashcards app, Fresh Cards. The current version has a lot of limitations, so I've been working on a rewrite that improves all aspects of the app, for nearly a year now. Most recently, I've been incorporating a lot of improved UX design. The app has always used a playlist metaphor, i.e. your database of flashcards is your library and you can sort them in different ways and then hit Play…

What's your design process? Any sketches, wireframes, other people testing? Also do you have a video demo or screencast?

Re: Ask HN: What are you working on? (July 2025)

#379

I have been unemployed for the last few months, and there's only so much TV and YouTube I can watch without going utterly insane between interviews, Since WGU just started doing masters degrees in CS, I decided it would be a way to kill large amounts of time while getting at least a little out of it, so I registered for it. I've been a professional software person for like fourteen years, so I was able to knock it ou…

What did the total cost for your MS?

Re: Ask HN: What are you working on? (July 2025)

#380

I have been unemployed for the last few months, and there's only so much TV and YouTube I can watch without going utterly insane between interviews, Since WGU just started doing masters degrees in CS, I decided it would be a way to kill large amounts of time while getting at least a little out of it, so I registered for it. I've been a professional software person for like fourteen years, so I was able to knock it ou…

What did the total cost for your MS?

Not very much, around $4,400. https://www.wgu.edu/online-it-degrees/computer-science-maste...

WGU charges "per term", and you can take as many courses as you'd like per term, as long as you can complete them.

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