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ProductGapRadar
Find US App Store hits not yet available in Japan.
Discover apps gaining traction in the US that haven't been localized or released in Japan yet. An information hub for indie developers hunting their next opportunity.
Hi PH! 👋 I'm an indie developer based in Japan.
I kept noticing the same thing: apps blowing up in the US App Store that simply don't exist in Japan yet — no localization, no release, nothing. Every one of those felt like an open opportunity just sitting there, but tracking them by hand was painful.
So I built ProductGapRadar. Every day it surfaces US apps gaining traction that haven't landed in Japan yet — a running list of market gaps for indie devs looking for their next thing to build.
I'd love to hear: if you're a builder, what's the last "why doesn't this exist here yet?" moment you had? And for anyone who's localized an app across markets — what worked, what didn't?
Happy to answer any questions 🙏
About ProductGapRadar on Product Hunt
“Find US App Store hits not yet available in Japan.”
ProductGapRadar was submitted on Product Hunt and earned 4 upvotes and 15 comments, placing #80 on the daily leaderboard. Discover apps gaining traction in the US that haven't been localized or released in Japan yet. An information hub for indie developers hunting their next opportunity.
On the analytics side, ProductGapRadar competes within Web App, Developer Tools and Artificial Intelligence — topics that collectively have 1.1M followers on Product Hunt. The dashboard above tracks how ProductGapRadar performed against the three products that launched closest to it on the same day.
Who hunted ProductGapRadar?
ProductGapRadar was hunted by Ont4Mqz WorkBase. 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 ProductGapRadar including community comment highlights and product details, visit the product overview.
Ont4Mqz WorkBase