Stable income: Somewhat stable

Custom Emoji Creator can be a moderately stable side hustle as a monthly income source. Based on online research and observed trends, some individuals have been able to consistently earn from this venture, while others experience fluctuations in income. If your best friend quit their job to pursue this full-time, it could be considered a moderate risk. I'd rate it a 3 out of 5 because while there is a decent baseline for income, there are periods of unpredictability that prevent it from being classified as stable.