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Free Tools

Free, in-browser calculators and reference tools. No sign-up, no email, no data saved. Math runs in your browser. Use them as much as you want.

Interactive calculators

Credit Card Payoff Calculator interactive

Enter balance, APR, and monthly payment. See your payoff date and total interest instantly. Math runs in your browser.

Wedding Budget Calculator interactive

Enter your total budget and guest count. See industry-standard category allocations (venue, photography, attire, etc.) instantly.

Reference + checklists

USDA Food Storage Chart reference

Complete fridge + freezer storage times for meat, dairy, produce, leftovers, and pantry. Based on USDA guidelines.

Weekly Meal Plan Template template

Realistic 7-day meal plan templates (carnivore, vegetarian, busy family). Plus the 5 rules that make plans survive past Wednesday.

Wedding Day Timeline Template template

Hour-by-hour wedding day schedule from morning prep to send-off. Plus the buffer rules that prevent the whole day from running 90 minutes late.

Wedding Day Emergency Kit Checklist checklist

60+ items organized by category. The kit your maid of honor or day-of coordinator carries all day.

How-to guides

How to Make a Budget guide

Step-by-step guide to building a budget that actually works, including the 50/30/20 rule, zero-based budgeting, and the "3 numbers" method.

How to Get Out of Debt Fast guide

The 7 levers that actually accelerate debt payoff — APR negotiation, balance transfers, side income, expense cuts, snowball/avalanche, windfalls, consolidation.

How to Plan a Wedding in 6 Months guide

Realistic month-by-month checklist for compressed wedding planning. What to do first, what to compromise on, what you can't shortcut.

How to Freeze Food Properly guide

Complete guide for meat, produce, bread, leftovers. What freezes well, what doesn't, freezer burn prevention.

How to Organize ChatGPT Prompts guide

A practical 7-step system for organizing your AI prompts so they're findable, reusable, and scalable. Includes folder structure templates.

About these tools

All tools and references are built and maintained by Chris Busbin, founder of a portfolio of indie iOS apps. The tools complement the apps — for example, the Credit Card Payoff Calculator handles one debt; the DebtFree iOS app handles your full debt payoff plan.

Calculators run entirely in your browser. Nothing is sent to a server. Refresh the page and your inputs are gone.