Our sites & apps
Everything we make at ChowChow Labs, an independent studio in Toronto, Canada.
Our sites
Ontario G1 Driver’s Test Prep
Free G1 mock exams with road signs and rules of the road.
Visit Ontario G1 Driver’s Test PrepCanadian Citizenship Test Prep
Practice tests based on the official Discover Canada guide.
Visit Canadian Citizenship Test PrepCanadian Take-Home Pay Calculator
See what you keep after tax, with 2026 federal and provincial rates.
Visit Canadian Take-Home Pay CalculatorCanadian Mortgage Calculator
Mortgage payments, land transfer tax, affordability and more, the Canadian way.
Visit Canadian Mortgage CalculatorBrain and Senses
Ten quick challenges for reasoning, memory, attention and the senses.
Visit Brain and SensesSleep Buddy
Calming sleep sounds you can mix, with a timer and gentle alarm.
You’re here
iPhone apps
Apps marked Coming soon are waiting for Apple’s approval.
Income Tax Calculator Canada
Take-home pay by province, right on your iPhone.
App Store: Income Tax Calculator CanadaOntario G1 Driver’s Test Prep
G1 practice tests you can take anywhere.
Coming soonCanadian Citizenship Test Prep
Citizenship practice tests on the go.
Coming soonSleep Buddy: Soundscapes
Sleep sounds, timer and alarm for iPhone.
Coming soonDaily Buddy
A friendly daily tracker for water, medicines, pets and more.
Coming soon