Hi, I'm theo

I build native apps with Swift and SwiftUI, and write about iOS development from time to time.

Originally from the Czech Republic, now based in Sydney, Australia.

X App Store GitHub

Writing

Occasional posts about building apps and things I learn along the way.

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Apps

A few apps I've built or worked on.

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Trade Position Size Calculator app icon

Trade Position Size Calculator

Plan Entry, Risk, SL & TP

App Store

A finance app for planning trade size, risk, stop loss, and take profit targets before entering a position.

  • Position sizing for futures, crypto, forex, and stocks
  • Long and short planning with multiple take profit targets
  • iPhone and Mac support
Calorimeter app icon

Calorimeter

Burned Calories, Macro Tracker

App Store

A health and fitness app for tracking burned calories, nutrition intake, macros, goals, charts, and widgets.

  • Apple Health and Apple Fitness integration
  • Nutrition, macros, goals, charts, and widgets
  • iPhone and Apple Watch support