Our sites & apps

Everything we make at ChowChow Labs, an independent studio in Toronto, Canada.

Our sites

ChowChow Labs
Our company home, with every site and app we make.
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Ontario G1 Driver’s Test Prep
Free G1 mock exams with road signs and rules of the road.
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California DMV Prep 2026
Free California DMV permit mock exams with signs and road diagrams.
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Texas DMV Prep
Free Texas permit mock exams with signs and road diagrams.
You’re here
Canadian Citizenship Test Prep
Practice tests based on the official Discover Canada guide.
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US Citizenship Test Prep
Practice for the 2025 U.S. civics test, with interview practice.
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Canadian Take-Home Pay Calculator
See what you keep after tax, with 2026 federal and provincial rates.
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Canadian Mortgage Calculator
Mortgage payments, land transfer tax, affordability and more, the Canadian way.
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Brain and Senses
Ten quick challenges for reasoning, memory, attention and the senses.
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Sleep Buddy
Calming sleep sounds you can mix, with a timer and gentle alarm.
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WaterDen
An independent Waterloo student forum for co-op and campus life.
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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
Ontario G1 Driver’s Test Prep
G1 practice tests you can take anywhere.
App Store
California DMV Prep 2026
California permit practice tests on your iPhone and iPad.
Coming soon
Texas DMV Prep
Texas permit practice tests on your iPhone and iPad.
Coming soon
Canadian Citizenship Test Prep
Citizenship practice tests on the go.
App Store
Brain and Senses
Quick challenges for memory, attention and the senses.
App Store
Mortgage Calculator Canada
Canadian mortgage payments and affordability on your iPhone.
App Store
Sleep Buddy: Soundscapes
Sleep sounds, timer and alarm for iPhone.
Coming soon
Daily Buddy
A friendly daily tracker for water, medicines, pets and more.
Coming soon