A profitable organically grown subscription-based iPhone Japanese learning app with no costs except Apple Proceeds and a differentiated Lock Screen learning experience. The product is mature, polished, and designed for recurring daily engagement, with clear expansion potential across content, localization, and lifecycle marketing.

Suite of growth tools for Substack Newsletters

Thiings is an online library featuring over 10,000 free AI-generated 3D icons. Key features include instant browsing by category, individual downloads without an account, and custom AI generation capabilities.

Italy mandates CAdES digital signatures (.p7m) for public-sector invoices, contracts and court filings — and nothing on Windows, macOS, iOS or Android opens them natively. P7M.io reads them in the browser, with no upload: the file never leaves the device. Three channels on one codebase: a web app, an iOS app and an Android app. Ranked #3 on Google for the core queries, 40,000 organic clicks a month, zero paid acquisition, zero staff.

AI assistant for social media comments and DMs on Facebook, Instagram and TikTok. It hides spam and negative comments, replies in the brand's voice using its own knowledge base, and opens a DM when a comment shows purchase intent. Built for brands, agencies and performance marketers running ad-heavy pages.