Instello reframes LeetCode prep as an Instagram-style scrollable feed

atomics423 built Instello to deliver LeetCode-style algorithm problems in a familiar infinite-scroll format, borrowing Instagram's feed UX to lower the friction of daily coding practice. For indie makers, it's a neat example of using a well-understood interface pattern to make a dry habit loop feel less like homework. Whether the novelty holds long enough to drive retention is the real question.