Login

u/Tadpole-Engineer

I built 35 free Canadian financial calculators in plain HTML/CSS/JS — no frameworks, no paywalls, no BS
▲ 2 r/prettyusefulwebsites+2 crossposts

I built 35 free Canadian financial calculators in plain HTML/CSS/JS — no frameworks, no paywalls, no BS

I built 35 free Canadian financial calculators in vanilla HTML/CSS/JS — no frameworks, no npm, no paywalls.

Started as a weekend project. Turned into 8 months of Canadian tax math hell.

Covers mortgage (semi-annual compounding — yes, Canada is different), take-home pay for all 13 provinces, EI, CPP/OAS, Express Entry CRS score, RSU tax, FIRE, immigration checklists and more.

Would love brutal feedback from the dev community — anything broken, wrong, or missing.

https://canadacalculator.ca

u/Tadpole-Engineer — 18 hours ago
▲ 7 r/ExpatFinance+1 crossposts

Canadian financial calculators that actually use Canadian math – built this after one too many frustrating Google searches

Every mortgage calculator I found used monthly compounding. Every retirement tool had no TFSA, no FHSA, no CPP. Every tax calculator defaulted to American brackets.

So I spent the last while building canadacalculator.ca. 22 free tools built around how Canadian money actually works. Correct semi-annual mortgage compounding, TFSA room by birth year, FHSA and HBP stacking, rent vs buy with opportunity cost, CPP and OAS estimates, take home pay for all 13 provinces and more.

https://canadacalculator.ca

No signup, no popups, runs entirely in your browser.

What would you add? This community would be the first to find anything I missed.

canadacalculator.ca
u/Tadpole-Engineer — 5 days ago
▲ 10 r/wearables+1 crossposts

Google Just Killed WHOOP's Business Model With a $99 Tracker. No Subscription. No Screen. Ships May 26.

Finally got through everything Google confirmed this morning and wrote it all up. The Fitbit Air is basically a Charge 6 without the screen — same sensors, same health tracking, just 12 grams and no display pulling your attention.

The part I found most interesting is the dual-device support — you can run a Pixel Watch during the day and switch to the Air at night for sleep tracking. Both sync to the same Google Health account simultaneously. That's genuinely clever.

Full breakdown here if anyone wants the deep dive: techtravelkit.com/fitbit-air-review-price-specs-digital-nomads-2026/

https://preview.redd.it/rhzw3zen7uzg1.png?width=1365&format=png&auto=webp&s=db08d393996c72909af557c6a12341ddde0e6fb0

reddit.com
u/Tadpole-Engineer — 12 days ago