Marlon Joel Pitters

Marlon Joel Pitters is a solo iOS developer building Costify, an expense-tracking and bill-splitting app, largely out in the open. He describes himself simply as a "design-obsessed iOS dev, trying to build the best expense tracker ever" — and has run Costify's entire public journey on Threads, from its September 2025 TestFlight beta through its App Store launch in January 2026 and past its first 6,000 users in March 2026. What stands out about Pitters' approach isn't scale — Costify is still a small, early app — it's transparency. He posts development updates as they happen, replies personally to App Store reviews (including critical ones about performance bugs), and engages directly with prospective users on pricing and feature requests. In one exchange with a user in Pakistan concerned about app pricing relative to local income, he responded directly that he was considering regional pricing adjustments — the kind of pricing conversation that usually happens behind closed doors at larger companies. He's a single builder handling design, development, support, and community entirely on his own — the classic shape of an indie iOS developer betting that a tightly scoped, well-designed tool can find its audience without a team or outside funding behind it.