Stable income: Somewhat stable

Smart API Design and Mockup Generator can be a moderately stable monthly income source for most people who try it. From online sources and my own experience, some users have reported consistent earnings, while others have faced fluctuations. While there is a decent baseline income, it may not always be predictable every month. I'd rate it a 2 out of 3 because there is a level of stability, but it may not be as dependable as a traditional job.