Photo by Growtika on Unsplash

Financial tools I built

I build tools from scratch to address real scenarios that off-the-shelf calculators can’t fully handle. By combining financial thinking with my tech background, I create tailored tools that bring clarity and context to complex decisions.

Investment calculator interface showing estimated ending balance with input fields and a stacked bar chart illustrating contributions and growth over time.

Investment growth projection calculator

# retirement

# compound-interest

Your consistent contributions and compound growth can build substantial wealth over time.

Buy vs. rent calculator showing key home purchase inputs alongside a breakeven monthly rent result, with house and apartment illustrations highlighting the comparison.

Buy vs. Rent calculator

# property

# opportunity-cost

Compare buying vs renting by factoring in opportunity cost and the full cost of ownership.

Monthly budget spreadsheet with a financial overview chart, alongside features like expense tracking and auto calculations.

Monthly budget tracking

# cash-flow

# spending-tracking

Get a complete view of your cash flow with built-in tracking, breakdowns, and savings insights.

A home ownership cost calculator showing inputs for mortgage, taxes, and insurance with a summarized monthly payment result.

Home ownership cost breakdown

# affordability

# mortgage

# home-ownership

Calculate the monthly cost of owning a home by factoring in mortgage, taxes, and ongoing expenses.

Hiring, curious, or willing to share your experience?

Crafted with 🦊 curiosity, spreadsheets, and debug tears.

© 2026 Celine.Xu

Hiring, curious, or willing to share your experience?

Crafted with 🦊 curiosity, spreadsheets, and debug tears.

© 2026 Celine.Xu

Hiring, curious, or willing to share your experience?

Crafted with 🦊 curiosity, spreadsheets, and debug tears.

© 2026 Celine.Xu

Create a free website with Framer, the website builder loved by startups, designers and agencies.