Useful tools for
questions that matter.
NeedTheseApps is a free collection of web apps that turn complicated questions into clear, practical answers — starting with savings and money. Every tool is free to use, runs in your own browser, and needs no sign-up. No professional language required.
We start with financial questions. We do not stop there.
Our first collection focuses on savings, income and financial planning. Over time, NeedTheseApps will grow into a broader library of practical web apps, all built around the same promise: make the question easier to understand.
Choose the question, not the jargon
Each category gets its own space as the collection grows.
Money & planning
Explore savings, income, growth and the choices that connect them.
Explore this collectionEveryday calculations
Useful calculations for common questions, explained in ordinary language.
See where we are headingLife & goals
Tools that help turn a future idea into something you can examine.
See where we are headingUseful & curious
Practical and unusual tools that make everyday questions easier to explore.
See where we are headingStart with the tool available today
Savings Withdrawal Calculator
The Savings Withdrawal Calculator shows how monthly withdrawals, investment growth and tax could change how long your savings last. It is free, it runs in your browser, and it does not ask you to sign up.
- Estimate sustainable monthly income
- See when savings may run out
- Compare different assumptions
How long could your savings last?
24 yearsIllustrative figures only
Different tools. The same standard of clarity.
A calculator, planner or everyday utility may answer a different question. The way it treats the user should stay consistent.
Start in your language
You should not need the professional term before you can find the right tool.
Show what it means
A result should explain the picture, not leave you alone with a number.
Keep limits visible
Assumptions, uncertainty and the boundary of each tool remain clear.
What useful tool should we build next?
Suggest a calculator, everyday utility or question that deserves a clearer way to explore it.