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Ask HN: What apps have you created for your own use?

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Re: Ask HN: What apps have you created for your own use?

#111
The first original and complete (by which I mean not just hacking or prototyping) ‘app’ I wrote was a poker timer and blinds tracker that ran on a Windows CE HP ipaq. It was written in Compact .net. I wish I still had the source to look back at it. It was used by my group of friends for the next maybe 6 years regularly. It must have been around 2003.

Re: Ask HN: What apps have you created for your own use?

#113
I've just published https://zekefinance.com, it started as a personal app to handle investments, dividends and taxes, for the Brazilian Stock Market (B3), for myself and family members.

It supports company shares, real state funds, BDRs (Brazilian Depository Receipts) and day-trade with future contracts.

The main motivation was the taxes management (annual income taxes and 'darfs') as this things can be complicated considering the rules of swing-trade, day-trade, profit, losses and excemptions around here.

It was also a personal learning experience in Android development(Kotlin and Jetpack Compose) and Supabase (big fan of it).

In the end, it took me 2 years doing it on my spare time and as I was kept adding features, I decided to published it as well, since I don't know good alternatives (most people don't know how to do taxes in Brazil).

Any feedbacks are much appreciated.

Re: Ask HN: What apps have you created for your own use?

#115
I have an entire suite of python based CLI tools for data processing and RF/network/packet analysis with various ML and reporting scripts to assist with anomaly detection, OSINT, and mapping. Started out as a side project years ago, is now part of my consulting tool kit. Been working on a v2, so I maybe open source the current set.

Re: Ask HN: What apps have you created for your own use?

#116
post #107

https://github.com/alexpovel/srgn It grew out of a niche, almost historical need: using a QWERTY keyboard, but needing access to German Umlauts (ä, ö, ü, as well as ß). Switching keyboard layouts is possible but exhausting (it's much more pleasant sticking to one); using modifier keys is similarly tedious, and custom setups break and aren't portable. So this tool can do: $ echo 'Gruess Gott, Poeten und Abenteuergruet…

I also use a QWERTY keyboard and I use a custom keyboard layout that maps alt-a to ä, alt-u to ü, alt-o to ö, alt-s to ß (plus the same for uppercase for the first 3). That works well for me without the need to post-process. On macOS it's relatively easy to create using a tool called Ukulele ( https://software.sil.org/ukelele/ ). You can also download my layout here: https://alex.kirk.at/USUmlaut.keylayout

On macOS you can also access related symbols by long-pressing keys. Obviously for large blocks of text you're still going to want to switch layouts but for a quick IM reply or typing a couple of characters I think it's faster.

Re: Ask HN: What apps have you created for your own use?

#117
Browser for Kindle highlights: https://github.com/karlosos/kindle_clippings_webapp

- No account needed

- Importing `My Clippings.txt` from your Kindle, exporting as json or markdown

- Browsing highlights from books, bookmarking highlights

You can check the demo here: https://karlosos.github.io/kindle_clippings_webapp/#/demo

Re: Ask HN: What apps have you created for your own use?

#118
Not really public right now, but I have created a bunch of small services for tracking various data that is relevant to my life. For example: I only fill up at one brand of gas station (have a membership there) and I am interested which of theirs is the cheapest at which times in my area. So I have a scraper that uses their public website, dump it into a time series db and analyze it later. Now I pretty much only fil up on Sunday evenings from 18:15 to 18:45 at a cerain station because it reliably always has the lowest price of the week.

Re: Ask HN: What apps have you created for your own use?

#119
https://github.com/trypromptly/LLMStack - started working on this as a wrapper over OpenAI's endpoints for another product and it gradually became this.

Another project I worked on for my own use was a network isolated, lightweight video monitoring system. Around 5 years ago, I was looking to install a camera in our living room. I couldn't find anything I trusted that worked completely offline without some companion app pinging their servers. So I bought a basic IP camera on Amazon that supports rtsp and a raspberry pi. Created a fenced wifi network and added the camera to it.

Had an FFmpeg process read camera stream on demand and write to local buffers. Wrote a simple python server to listen for incoming connections on a different interface and stream the video on API requests. Then built an android app that talks to the python server to stream video on demand.

Also installed motion (https://github.com/Motion-Project/motion) on raspberry pi to detect motion in the video and store those snippets to local storage. With motion running, the adapter I was using wasn't delivering enough power resulting in storage occasionally unmounting and raspberry pi restarting taking the camera system offline. With motion detection disabled, the entire setup ran reliably for many years.

Re: Ask HN: What apps have you created for your own use?

#120
A few years ago, my wife and I decided to adopt a rescue cat from battersea.org.uk. However, it was a frustrating experience as the staff didn't always update the website regularly, and we'd find that any suitable cats would be snapped up before we'd even seen them.

I spotted that the website served its data to the frontend via an unsecured internal JSON API, so I built an Elixir app that would poll the API endpoint and upsert the cat data into the database. Any new records would get posted to a twitter account (a free way to get notifications on my phone).

It worked beautifully, and when a black cat called "Fluff" popped up, we both knew he was the right one, and we were able to phone them and arrange a meeting before anyone else. Fast forward five years, and he's sitting next to me on the sofa right now, purring away.

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