A little curiosity.
A lot of possibilities.

Public apps, internal projects, and work in progress.

Open an app for its summary, support information, and privacy note.

See the public apps on the App Store

Finance, data & learning14

Bar Chart Race

AvailableiPhone & iPad

Turn changing data into animated bar-chart stories.

Calc Forex: Currency Converter

AvailableiPhone, iPad & Apple Watch

Convert currencies and work with current public exchange-rate information.

Distributions

AvailableiPhone & iPad

Explore statistical distributions with interactive calculations and visual explanations.

Epicycle Gallery

AvailableiPhone & iPad

Watch rotating circles reconstruct curves in a hands-on Fourier series studio.

Fin Calc

AvailableiPhone & iPad

A practical financial calculator for everyday calculations and planning.

Learn Graphs

AvailableiPhone & iPad

Learn about mathematical functions and graphs through interactive examples.

Longevity SA

AvailableiPhone & iPad

Explore South African life expectancy using official mortality tables, interactive charts, and practical retirement insights.

Noisy Alpha

AvailableiPhone & iPad

A statistics and data exploration app for working with noisy numbers and distributions.

Option Greeks

AvailableiPhone & iPad

Explore option pricing and the Greeks with a practical analytical tool.

SA Tax

AvailableiPhone & iPad

South African tax tools for exploring salary, tax, and related calculations.

UK Mortality

Coming sooniPhone & iPad

Explore UK life expectancy with period and cohort tables, interactive charts, and on-device insights.

UK Tax

AvailableiPhone & iPad

A UK tax calculator for exploring personal tax figures and take-home pay.

US Mortality

Coming sooniPhone & iPad

A US mortality data exploration project currently shown as work in progress.

US Tax

AvailableiPhone & iPad

A US tax calculation and learning tool.

Games & play11

Tools & utilities14

Internal apps3

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