PlanProsper
A React Native financial planning app for iOS and Android — three calculators in one package: debt payoff, net worth, and retirement planning with charts and what-if scenarios.
Built from scratch
PlanProsper bundles three financial tools for Advantage Financial Planning: a debt reduction calculator, a net worth calculator, and a retirement planner. Each calculator has its own color theme and step-by-step flow, with live summary metrics at the top as inputs change.
Users can run calculations without an account. Sign in with Apple, Google, or email to save scenarios and sync them across devices through a Cloudflare Workers API. The marketing site at planprosper.app links to App Store and Google Play downloads.
What's included
Debt reduction calculator
Enter creditors with balance, interest rate, and minimum payment. Set a monthly budget and pick avalanche (highest interest first) or snowball (lowest balance first). See total interest paid, debt-free date, and a per-creditor payoff schedule.
Net worth calculator
Two-step flow for assets and liabilities. Add line items with names and amounts; totals and net worth update instantly in the summary dashboard.
Retirement calculator
Four-tab wizard: savings and contributions, asset allocation, income and spending, then results. Charts project savings over time. Answer questions like whether you are saving enough, how long funds will last, and how much you can spend in retirement.
Save, load, and sync
File menu on every calculator supports save, load, and clear. Named saves persist locally; signed-in users sync saved calculations and language preference to the cloud.
How it runs
Cross-platform mobile app built with React Native and Expo. Saved calculations sync through a Cloudflare Workers API. Published to the App Store and Google Play.
Debt reduction calculator
Track balance, interest paid, and debt-free date. Add creditors, choose avalanche or snowball payoff strategy, and review the payment schedule.
Retirement calculator
Multi-step retirement planner with savings chart, asset allocation, income and spending inputs, and what-if results.
Tools we used
Published on App Store and Google Play
- React Native
- Expo
- Cloudflare Workers
React Native · Expo · Cloudflare Workers
Building a mobile app with real calculations?
We can design and ship cross-platform React Native apps with native auth, cloud sync, charts, and App Store / Google Play submission.