FitMetricLab
Science-backed tools for training, nutrition and recovery that keep progress honest: macros, training load, readiness, and the numbers underneath them.
What defines it
Featured tools
Other brands
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FinToolSuite
Personal finance and investment calculators that remove the guesswork.
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FireMathLab
FIRE and retirement-date calculators that show their working.
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BuildMetricLab
Construction and engineering calculators for faster, sharper estimates.
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PrintablesWorld
Printable kits, planners, puzzles, and smart PDF utilities.
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RunTheTests
Free browser-based device, network, and privacy tests.
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MotorMath
Pure-math car calculators for total cost of ownership and EV comparison.
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PlainEstimate
Estimates and invoices that stay on your own machine.
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Expense Diary
A local-first spending diary for iPhone, iPad and Android: safe to spend, bills, jars, reports and a road to financial independence.
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Plain Estimate: Invoice Maker
Quote at the door, get it signed on the spot, invoice it later. No account, nothing capped, and your documents stay on your phone.