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Discern
Swipe left for AI, right for real. How good is your eye?
Discern is a swipe game that tests whether you can spot AI-generated photos. See a photo, swipe left for AI or right for real. An Elo system rates both you and the images so the game gets harder as you improve, while easier images find their way to newer players. The image library grows itself around the clock from real photo sources and multiple AI generators at different quality levels. No sign-up, no ads, no tracking. Free to play, open source.
Hey everyone! I built Discern because I noticed how hard it's getting to tell real photos from AI-generated ones. Most people are worse at spotting fakes than they think.
So I made a game out of it. You see a photo, you swipe. That's it.
What makes it interesting under the hood:
- Both players and images have Elo ratings. As you get better, the game serves you more convincing AI images. New players get the easier ones first.
- The image pipeline runs 24/7 with zero manual work. Real photos come from Unsplash, Pexels, and Pixabay. AI images come from four different generators (Gemini, Flux, Stable Diffusion, Workers AI) at varying quality levels, which creates a natural difficulty curve.
- The whole thing runs on Cloudflare's stack for nearly nothing. Open source if you want to poke around.
I built this solo over a few days. No accounts, no ads, no tracking. Just photos and your judgment.
Curious to hear: how good do you think you are at spotting AI photos? And if you play a few rounds, did your confidence match your actual accuracy?
About Discern on Product Hunt
“Swipe left for AI, right for real. How good is your eye?”
Discern was submitted on Product Hunt and earned 1 upvotes and 1 comments, placing #88 on the daily leaderboard. Discern is a swipe game that tests whether you can spot AI-generated photos. See a photo, swipe left for AI or right for real. An Elo system rates both you and the images so the game gets harder as you improve, while easier images find their way to newer players. The image library grows itself around the clock from real photo sources and multiple AI generators at different quality levels. No sign-up, no ads, no tracking. Free to play, open source.
On the analytics side, Discern competes within Open Source, Free Games, GitHub and Games — topics that collectively have 216.8k followers on Product Hunt. The dashboard above tracks how Discern performed against the three products that launched closest to it on the same day.
Who hunted Discern?
Discern was hunted by Sean Reid. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Discern including community comment highlights and product details, visit the product overview.
Sean Reid