Start Here
Find the right starting point.
NJL Design Lab covers financial independence, real estate, productivity, and life systems. Use this page to find the tool or article that matches where you are right now.
Choose your path
What are you working on?
Financial Independence
I want to plan my path to FI.
Start with FI Architect — a free web app for modeling financial independence scenarios, testing assumptions, and running long-range projections with your actual numbers.
Real Estate
I want to analyze a deal.
Start with Deal Analyzer — a free web app for real estate underwriting. Run cash flow projections, test financing scenarios, and evaluate deal economics with more structure.
Productivity & Systems
I want to optimize how I operate.
Start with 1% Better — a free web app for capturing small wins, repeatable improvements, and the daily systems that make life easier to run.
Just Exploring
I want to browse everything.
See all the tools and apps in one place, or head to the blog to read what’s been published. There’s no wrong starting point — pick what sounds most useful right now.
All resources
Everything NJL Design Lab offers.
Free Tools
- FI Architect
Financial independence scenario planner - Deal Analyzer
Real estate underwriting tool - 1% Better
Small wins and life-systems tracker - See All Tools →
Premium Spreadsheets
- FI Architect Spreadsheet
Financial independence planning model - Debt Payoff Planner
Snowball vs avalanche payoff planning - Money Map Budget Tracker
Budget and net worth tracking - Browse the Etsy Shop →
Mobile Apps
- FI Architect for iOS
Mobile FI planner with saved scenarios and AI co-pilot - My Farmers Market (iOS)
Recipe costing, pricing & market planning for vendors - Download FI Architect →
Stay in the loop
New tools and articles drop regularly.
FI Architect for iOS is live. New web apps are coming. The blog is updated weekly. Check back often — or start with what’s already here.