Stable income: Somewhat stable

I’d rate it a 3 out of 5 because while app development can provide a decent baseline income, it often comes with periods of unpredictability. Some months may bring in significant earnings from app sales or freelance projects, while others might be leaner. This inconsistency makes it moderately stable, as it’s not as unpredictable as a 2, but lacks the predictability of a 4.