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 Prep ↗Canadian Citizenship Test Prep
Practice tests based on the official Discover Canada guide.
Visit Canadian Citizenship Test Prep ↗US Citizenship Test Prep
Practice for the 2025 U.S. civics test, with interview practice.
You’re hereCanadian Take-Home Pay Calculator
See what you keep after tax, with 2026 federal and provincial rates.
Visit Canadian Take-Home Pay Calculator ↗Canadian Mortgage Calculator
Mortgage payments, land transfer tax, affordability and more, the Canadian way.
Visit Canadian Mortgage Calculator ↗Brain and Senses
Ten quick challenges for reasoning, memory, attention and the senses.
Visit Brain and Senses ↗
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 Canada ↗Ontario G1 Driver’s Test Prep
G1 practice tests you can take anywhere.
App Store · Ontario G1 Driver’s Test Prep ↗Canadian Citizenship Test Prep
Citizenship practice tests on the go.
App Store · Canadian Citizenship Test Prep ↗U.S. Citizenship Test Prep
2025 civics test practice and interview practice on the go.
Coming soonBrain and Senses
Quick challenges for memory, attention and the senses.
App Store · Brain and Senses ↗Mortgage Calculator Canada
Canadian mortgage payments and affordability on your iPhone.
App Store · Mortgage Calculator Canada ↗Sleep Buddy: Soundscapes
Sleep sounds, timer and alarm for iPhone.
Coming soonDaily Buddy
A friendly daily tracker for water, medicines, pets and more.
Coming soon