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Posted by cvbox 12/18/2025

Ask HN: Those making $500/month on side projects in 2025 – Show and tell

It's the time of the year again, so I'd be interested hear what new (and old) ideas have come up. Previously asked on:

2024 → https://news.ycombinator.com/item?id=42373343

2023 → https://news.ycombinator.com/item?id=38467691

2022 → https://news.ycombinator.com/item?id=34190421

2021 → https://news.ycombinator.com/item?id=29667095

2020 → https://news.ycombinator.com/item?id=24947167

2019 → https://news.ycombinator.com/item?id=20899863

2018 → https://news.ycombinator.com/item?id=17790306

2017 → https://news.ycombinator.com/item?id=15148804

485 points | 560 commentspage 10
kobiguru 12/18/2025|
It's just been a month since I set up a proper website, and I've already received my first $ 500 in a side gig. The jobs started before I set up the website.

I help businesses automate their admin work if they already use Google Workspace products using App Script and Typescript.

https://mereth.dev/

hanamizuki 12/24/2025||
I built a GLP-1 tracker app for iOS/Android called mojo.

mojo connects your health data (apple health/health connect) and get real-time AI feedback when new data is logged. It proactively detects your changes and provide insights on achievements and suggestions.

So far it's around $1150 revenue per month with 200 paying users and 4000 downloads.

https://mojoapp.ai/

terrortib 12/19/2025||
I built a timesheet / activity report management app years ago.

In the French freelancing market, there’s a specific administrative hurdle: the Compte Rendu d’Activité (CRA). It’s a signed activity report that acts as the "source of truth" for billing. Most people use messy Excel sheets. I built Timizer to solve my own frustration with this workflow. What started as a side project for my friends eventually caught the eye of larger agencies. It’s now a nice $1k/month SaaS.

I recently translated the app in English so I can address larger markets, but I have no idea if this activity report is even a thing in foreign markets, like US, UK,...And if somebody has the answer here I would love to talk about it :)

My website is here : https://timizer.io

fullstackchris 12/18/2025||
I have a variety of education (books, courses) and run fintech SaaS, which combined are finally providing around $2K/month in profits since around July this year (for a long time, was hovering around that $500 mark)

My first successful SaaS, The Wheel Screener, a screener optimized for selling options: https://wheelscreener.com

A sister spin-off LEAPS Screener, for buying LEAPS options: https://leapsscreener.com

And, just launched in November, but already profitable, VannaCharm, a dashboard to view and watch in real time dealer hedging metrics: https://vannacharm.com

Looking to launch 1-2 more SaaS in 2026, trying to get to the point where I can do this full-time, let's get it folks!

willprice89 12/18/2025||
I'm developing Wallpunch, a censorship resistant VPN for people in China, Iran, and Russia. Userbase is pretty small as I'm still polishing things up, but I hope to expand my marketing efforts a lot in 2026!

https://wallpunch.net/

qiuweishi 12/29/2025||
Your website need i18n, for example, switch to Chinese automatically if `navigator.language === 'zh-CN'` ---- advice from a Chinese user.
huang-b62b5756 12/27/2025|||
Is it profitable at $7/month with unlimited bandwidth?
discordance 12/18/2025|||
How are you going to accept payments for this without outing yourself and becoming a target to authorities in those countries?
willprice89 12/18/2025||
Company is registered anonymously in another country. I also offer crypto payment options.
realsdx 12/18/2025||
Site is dead
willprice89 12/18/2025||
Really? What country are you connecting from? It should be accessible in China, US, Europe etc.
moinism 12/18/2025||
https://ffmpeg-api.com

As the domain (hopefully) indicates, A REST API for the FFmpeg service. So far, it's been a plain API, but now it's adding MCPs and AI endpoints, so you don't have to remember ffmpeg commands.

jacobp100 12/18/2025||
I do a few apps that get about this, but the one most interesting to the audience here is a scientific calculator for iOS, iPadOS and macOS

https://jacobdoescode.com/technicalc

One time payment, no subscriptions or IAPs

DamnInteresting 12/18/2025||
My 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.
nicbou 12/18/2025||
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.

DamnInteresting 12/18/2025||
Thanks! We had our 20th birthday earlier this year, so we've certainly been around for some vintage devices. Over the years our primary audience moved from desktop web browsers to mostly mobile readers, and now our largest audience is podcast listeners.

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.

nikole9696 12/18/2025|||
I love this site - have you considered monetizing with like e-books or other offline offerings, if you don't already?

Also, your traffic might not be counting those of us like myself who use an RSS feed (a la Feedly) - those links don't go to your site, they just go to, well, the link. =)

DamnInteresting 12/19/2025||
Thanks! We do indeed have a sort of e-book monetization; donating above certain thresholds gives one access to download an e-book version of our entire catalog.

And true enough that RSS traffic is largely uncounted, but there are many other indications of reduced visitor count--server-side logs, comment count on original content, number of email subscribers, and that sort of thing.

nicbou 12/18/2025|||
This is how I fear my own website will be if the trend continues. Platforms gave, and now they're taking away.

At least what you have built will endure. Even if your invested just enough to keep the lights on, you would still have a trove of fascinating content. It's something to be proud of.

DANmode 12/21/2025||
If you’ve recently dipped below, definitely still post.

I personally would still want to see your comment.

lhr0909 12/19/2025||
I built a receipt organizer and tracker app on iOS in May this year and now it has just past $200 in monthly recurring revenue and >$500 in December. Before this I have been collecting my own receipts and scanning them into a private website I built for myself, then one day I was like, why don't I make it into an app so it is easier to use and I can share it with others?

https://receipt-genie.com

https://apps.apple.com/us/app/receipt-organizer-receiptgenie...

aristofun 12/21/2025|
What do you use for OCR, I wonder

if it's LLM isn't that too expensive (or flaky if cheap) to be scalable?

lhr0909 12/26/2025|||
I was using an OCR service but I have migrated to use LLM recently. It is actually cheaper and more scalable because it is accurate enough and I can also get more information (guess currency and timezone, and translate, and even help tag the receipts) with a single prompt. Currently it sits just a tad bit cheaper than my previous OCR service per receipt scanned. Since I am providing this as an app instead of as an automation, there is UI for user to make edits and they seem to be happy enough about the results with very minimal need to edit.

I have also been playing with open source VLMs like Qwen3-VL and it was surprisingly not too far behind. I think the next generation I should be able to switch over and save a bit more on cost.

aristofun 12/26/2025||
Thanks for elaborating! Btw, what model is currently cheap yet accurate enough for you?
mesmertech 12/18/2025|
Got two websites but the second one is basically a clone of the first with better visuals and better tech stack that I actually want to work on

https://aieasypic.com - 3k per month (declining cause not working on it a lot, just maintenance) https://bestphoto.ai - 2k per month (increasing cause of better SEO)

Now trying my hand at an actual non-consumer product, not that b2b but something to make making ads easy because that’s where I find myself getting stuck on when doing fb ads or TikTok organic stuff : https://admakeai.com

rsanek 12/18/2025|
It doesn't seem like any of the photos on bestphoto.ai load for me. This is on Firefox on Mac; does seem to work in Safari.
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