I run a Substack where I show programmers how to turn advanced math papers into C and Python code. I'm a math guy who codes and I do it for fun. I'm shocked people are interested in this stuff. LeetArxiv Substack: https://leetarxiv.substack.com/
Ask HN: Those making $500/month on side projects in 2025 – Show and tell
411–420 of 575 posts
Re: Ask HN: Those making $500/month on side projects in 2025 – Show and tell
#412https://www.condoally.com/ and https://www.hoaally.org/ - Simple yet powerful tools for running small/self-managed HOAs. The site is 15 years old now and pretty solid. I dreamed much more for it, but I still can't figure out the marketing. The front-end is open-source: https://github.com/CommunityAlly/CommunityAllyWebApp
Re: Ask HN: Those making $500/month on side projects in 2025 – Show and tell
#413I made Whenish cause i was frustrated with apps taking you outside of group chats to schedule events and find out dates when people are available. Whenish is an iMessage extension app and it works pretty nicely so far.
recently got my first user feedback email which was really exciting!
hope to figure out how marketing works to get some more users and hopefully double downloads + sales next year.
Re: Ask HN: Those making $500/month on side projects in 2025 – Show and tell
#414My long-running website damninteresting.com and its affiliated projects (e.g., omiword.com) earn me a combined ~$700/month profit on average. Donations have been declining, however, so I don't know if I'll be piping up in next year's thread.
I love your website. I stumble upon it again every other year and I'm always amazed by the quality of the content and writing. I was reading your articles on my Windows Mobile phone, ages ago! Have you also had a decline in traffic in the last 18 months? It seems like the entire independent web is getting strangled out.
Site traffic is indeed down in recent years. The largest decline was when Facebook introduced "boosting," and stopped showing our posts to 90%+ of our Facebook followers overnight. I despise advertising, so I was unwilling to cave to their demand to "boost" our posts into ads. I'd have been happy to pay a reasonable monthly fee to reach our audience there, but that option was never available.
That big dip in traffic came with a big dip in donations, and as a consequence I eventually had to move from a part-time day job to full-time. The sharp reduction in free my time led to a sharp reduction in original content on Damn Interesting, which further shrunk the pool of people willing to donate.
This is a spiral that some would classify as "death," if I were willing to let it die. But it settled into an equilibrium where it pays for itself, makes a modest profit, and remains rewarding. Frankly I'd probably still do it even if donations dried up entirely, the research and writing give me a sense of purpose that would be difficult to replace.
I used to hope that a wealthy benefactor would discover us, and decide to fully fund our project for a few years, giving us space to realize more of the project's potential. But such offers come with strings attached, and I don't have the stomach for most of those. Perhaps I am broken.
Re: Ask HN: Those making $500/month on side projects in 2025 – Show and tell
#415Re: Ask HN: Those making $500/month on side projects in 2025 – Show and tell
#416I launched Filestash [1] as my response to the infamous “Dropbox should just be FTP” comment. Once I had a decent FTP experience, I kept going: adding support for pretty much every storage protocol, plugins to expose Dropbox (or anything else) over FTP, SFTP, MCP, or S3, and all the features I wished Dropbox had, with plugins to customize everything. The base product is open-source and I make money from custom builds…
It was basically a backend for generating STS credentials on the fly using a more ergonomic interface. It never went anywhere and I haven't thought about it in years, but I still believe it was a good idea that I just didn't have the organizational clout or time to push forward.
Edit: apparently I contributed at some point too? I *barely* remember that. Glad to see the project is still succeeding!
Re: Ask HN: Those making $500/month on side projects in 2025 – Show and tell
#417https://dreamandcolor.com/ has been a fun solo bootstrapped side project for me for the past 2.5ish years - (specialize in converting photos to coloring pages for parents, educators, etc) I started it primarily wanting to take a shot at productizing an image diffusion model (Stable Diffusion 1.5 when I started) in a novel (at the time) way and it ended up growing legs of it's own. She's steadily chugging along, growi…
Re: Ask HN: Those making $500/month on side projects in 2025 – Show and tell
#418I’m still selling Computer Engineering for Babies. And I just launched a new book called Simple Machines Made Simple on Kickstarter a month or two ago. Both books are basically just simple interactive demos for kids and adults. https://hackylabs.com
Re: Ask HN: Those making $500/month on side projects in 2025 – Show and tell
#41926.3% of jobs found on company websites are not advertised on any job boards but found using this tool.
The app scrapes company's directly (24/7) and give the user:
- a head start over other job seekers
- access to thousands of jobs not listed anywhere else
- daily job filter emails with ability to be highly curated to reduce noise
Re: Ask HN: Those making $500/month on side projects in 2025 – Show and tell
#420BudgetSheet ( https://www.budgetsheet.com ) -> $6k MRR avg. for the year. Will likely have my first $10k month in January. Live Bank Transactions + Google Sheets. Links accounts with Plaid to track transactions and balances over time with some helpful templates. All the data is yours in your own spreadsheet to do with what you want. Revenue is somewhat seasonal. Most revenue comes in Q1+Q2 and trails off in Q3+Q4. Us…
Is this self hosted or giving the cloud the keys to the kingdom?
This is a Next.js app hosted on Render.com, which is a managed VPS offering similar to Heroku. BudgetSheet is also of course completely reliant on Google Cloud though with Google Apps Script and the Workspace Marketplace where it is listed.