How to Promote Your Price Comparison App in a Niche Reddit Community

Reddit niche communities are perfect for launching tools tailored to specific interests. Here’s how one creator promoted a running shoe price comparison site to r/RunningShoeGeeks.

Algorithm:

1. The creator built a website that lets users compare prices and find deals on running shoes across 50+ US and 40+ Canadian retailers.
2. They posted directly in r/RunningShoeGeeks, a community of over 270k members dedicated to running shoes, ensuring a highly relevant audience.
3. The post title was clear and functional - “I built a website to help you compare prices and find deals on running shoes” - immediately communicating the value.
4. In the body, they:
   • Shared links to the US and Canada versions of the site
   • Outlined existing features like filtering by size, width, and gender, plus a deals page
   • Listed planned features (price alerts, more countries, advanced filters)
   • Invited feedback from the community
5. Early adopters in the comments shared positive experiences using the site, which acted as organic testimonials and encouraged others to check it out.

Why It Worked:

• The subreddit’s audience perfectly matched the tool’s purpose.
• Providing immediate value with links and a working product built trust.
• Community members validating the tool in comments amplified credibility.

How to Scale This:

• Post in other related communities like r/running, r/BuyItForLife, and r/frugalmalefashion.
• Follow up with feature updates, tagging early supporters who engaged.
• Encourage satisfied users to share their finds or savings as new posts.

Related Ideas:

• Comparison tools for cycling gear in r/cycling.
• Price trackers for outdoor equipment in r/CampingandHiking.
• Deal aggregators for tech products in r/buildapcsales.

This Is How It Looks Like

What users say

• “Just snagged a pair of Superblast from Fleetfeet using this site... Great site!”

By posting in a hyper-relevant subreddit with a ready-to-use tool and engaging directly with feedback, the creator reached their ideal users without paid ads.

Final Notes

• Go where your exact target audience spends time on Reddit.
• Lead with a functional, helpful product before asking for anything.
• Encourage early users to share results to build credibility.