coldcaller.pro is a French B2B prospecting SaaS selling qualified cold-calling leads to solopreneurs and agencies. Leads come enriched with the owner's direct mobile + email. Subscriptions €19–99/mo, no free trial, ~9% visitor-to-paid conversion, €2.4k MRR with minimal fixed costs (93% margin). 100% community driven acquisition (word of mouth). Runs solo — big upside with paid ads or a sales team.

HYGILAS ACADEMY

An ad-free, text-based RPG for iOS and Android. It has generated steady revenue for months and attracts organic traffic through the app stores. The game has maintained an active player base for months, with players logging in daily. some of them passing 1000+ hours playtime. Its progression systems give them long-term goals without requiring constant new content. We run bonus diamond (iap currency) promotions on package purchases twice a month, so expect a two-day revenue spike each month.

Viral AI party games that you can play with friends and also meet random users online.

Indie Hacker