Image: Envato Truecaller just crossed a milestone most apps never reach. The challenge now is proving that scale can still translate into growth. In March, the company said it had passed 500 million monthly active users and added 50 million users over the previous year. That is a major milestone, but it arrives as the business faces a more difficult stretch in India, where user growth is slowing, competition is shifting closer to the telecom layer, and newer revenue lines are being asked to do more of the work. Why India matters more now India is still the center of Truecaller’s business. According to TechCrunch , the company has more than 350 million users there, roughly 70% of its global base. That same report said downloads in India fell 16% year over year in 2025, while global downloads fell 5%. That does not mean the app is suddenly losing relevance.…