Purpose-built tools for the age of quick answers
Every tool here is an expert in one small problem. It knows which questions to ask, recomputes while you adjust, and hands you an output you can use. Free, in your browser, no account.
51 tools · no sign-ups · new tools every week
Live demos. Every tool here works like this.
The Toolkits
One purpose-built tool per problem, grouped by the job you're doing. Free, in your browser, no account needed.
The tools are the experts.
You never have to explain your problem to a text box. The inputs already know which details matter, so the answer can commit to a number.
Adjust
Every answer comes with knobs. Tune the inputs and the answer recomputes in front of you.
Hand it off
Outputs, not transcripts. Print the shopping list. Copy the summary. Download the file.
Exact
Committed numbers with units: 0.62 gal, 3 quarts, $41.25. Edge cases included.
Free
Every tool, in your browser, without an account. Nothing to install, nothing to pay.
From the blog
Guides, comparisons, and behind-the-scenes notes on the tools we're shipping.
Purpose-Built Tools for the Age of Quick Answers
Here is the whole thing in one sentence: every AppCrib tool is an expert in one small problem. It knows which questions to ask, it recomp...
Percentage Zones vs Offset Zones, and the Exponent Almost Nobody Checks
A swimmer goes 1:02.40 for the 100. The coach wants a 500 goal to put on the board, and the arithmetic looks like it does itself: a 500 i...
Why Your TDEE Number Stopped Working
There's a post I keep seeing, written in almost the same words every time. Someone is seventy pounds down. The calorie target that carrie...
