Alarmy maker DelightRoom acquires profitable $4M ARR learning app Noji

DelightRoom, a South Korea-based consumer app studio known for its flagship product Alarmy, has acquired Noji, a profitable flashcard and spaced-repetition learning app, for an undisclosed amount. The transaction was facilitated by DelightRoom's M&A arm, DelightHub, and was announced on May 7, 2026. Noji has demonstrated impressive growth since its launch in December 2020, boasting over 6 million lifetime users and generating $4 million in annual recurring revenue (ARR) with more than 100,000 active subscribers.

Noji, developed by Andrew Bondarenko, Maksim Abramchuk, and Danil Gontovnik, has carved out a niche in the educational technology sector by offering a user-friendly platform that enhances learning through effective memorization techniques. The app's unique cross-platform capabilities have resulted in over 20% of its revenue being generated through web-based subscriptions, a rarity among consumer mobile applications. This strategic positioning has allowed Noji to achieve significant organic growth, with 2.5 million installs in the past year alone.

DelightRoom's acquisition of Noji aligns with its broader strategy to scale high-performing consumer applications. Jay Shin, CEO of DelightRoom and DelightHub, emphasized the importance of preserving Noji's core strengths while leveraging DelightRoom's expertise in product development, monetization, and growth strategies. The acquisition is expected to facilitate increased investment in Noji's product offerings and expand its presence in key markets such as Japan and Brazil, where the app is already gaining traction.

The transaction comes at a time when the consumer mobile app sector is experiencing a surge in merger and acquisition activity. In 2025, technology M&A deal values rose by 31% year-over-year, while consumer app spending reached $155.8 billion, reflecting a 21.6% increase. This trend indicates a growing appetite among acquirers for companies that demonstrate strong retention rates, organic growth, and sustainable unit economics, moving away from the previous growth-at-all-costs mentality.

As DelightRoom integrates Noji into its portfolio, further acquisitions through DelightHub are anticipated in the near future. The acquisition underscores the increasing consolidation within the consumer app market and highlights the potential for innovative educational tools to thrive under the stewardship of established players in the industry. The strategic move not only enhances DelightRoom's product offerings but also positions it well to capitalize on the ongoing demand for effective digital learning solutions.