A free app for Android, by Sawhney Systems.
PlanMode is a comprehensive financial planner and retirement planning app that allows you to analyze any financial situation, plan for it, and see the results of your plan in one place. With the app, you can analyze different scenarios, make forecasts, and get suggestions for how to best manage your money.
The app includes built-in income taxes for each country. It also allows you to set the income tax rate and the amount of taxes you're willing to pay. It's important to keep in mind that the results will be based on the current income and the amount of savings you have.