Startup Idea: Multi-stream Income Tracker Software

Startup idea to develop software that tracks time and earnings for various online tasks across multiple income streams. The software should provide visibility on profitability per hour and help identify the most profitable times for each activity. Also, suggestions on dropping lower-performing activities based on actual data analysis.

I work doing various tasks online. I do everything from Mturk, online transcribing, teaching English online, selling in-game currency and items, online video game streaming via twitch. Point is I have multiple income streams, I wish there was a program that monitored my time per task and earnings per hour doing each so that I can see when diminishing returns start to take effect doing a particular activity or even if an activity is unprofitable and should be dropped entirely. Also another feature would be to just tell me what times a most profitable to do which activity. I would pay a flat fee of 20 dollars or a monthly subscription fee of 1.99.