Case Study · Personal Finance App
Balyria
A personal finance app for tracking bills, loans, debts, installments, income, expenses, and payday forecasts.
- React Native
- Expo Router
- Zustand
- SQLite
- Offline-first
- Google Play
Project overview
Money clarity before payday — not just after
Balyria is a personal finance app that helps people understand their money before payday. Instead of only logging past expenses, it brings bills, loans, debts, installments, income, and upcoming obligations into a single, clear picture of what is actually left to spend.
It is built for anyone who feels uncertain between paydays — people juggling recurring bills, active loans, and installment plans who want to know, at a glance, whether they are on track. Balyria turns scattered financial commitments into a forecast they can plan around.
Most money apps answer “where did it go?” Balyria answers the more useful question: “what is coming, and how much is safe to spend before my next payday?”
My role
I designed and built Balyria as a personal finance product — working across product planning, frontend implementation, application and data logic, on-device data modeling, and continuous user-experience improvements. It is a solo product I own end to end, from the first wireframe to the published Google Play release.
Product tour
Inside the app
A look at how Balyria turns scattered bills, loans, and income into one clear, forecast-driven view.
Key features
Everything that shapes a payday, in one place
Bills & payment tracking
Track recurring and one-off bills with due dates, so nothing slips past payday unnoticed.
Loans & debt management
Keep active loans and debts in one place, with balances and payoff progress at a glance.
Installments
Follow installment plans over time and see how each one affects upcoming cash flow.
Income & expenses
Record income sources and everyday expenses to ground every forecast in real numbers.
Payday forecasting
Project what is left before the next payday once obligations are accounted for.
Emergency fund insights
See how prepared you are for the unexpected, not just the everyday.
Dashboard summaries
A single dashboard that turns scattered commitments into a clear financial snapshot.
Planning before payday
Make spending decisions with the whole month in view, not just today’s balance.
The product challenge
Many people do not just need another expense tracker. They need to understand upcoming obligations, active loans, debts, installments, and the timing of their income — and how much money is genuinely left before the next payday. That picture is usually scattered across notes, banking apps, and memory, which makes confident decisions hard.
The solution
Balyria organizes financial obligations and cash flow into a clearer dashboard and forecasting experience. By bringing bills, loans, debts, installments, income, and expenses together, it shows users what is coming and what is safe to spend — so they can plan ahead instead of reacting after payday.
My contributions
What I built and shaped
Built the product experience around real financial-planning workflows.
Implemented tracking for bills, loans, debts, installments, income, and expenses.
Developed the dashboard and forecasting experiences.
Improved the UX for understanding upcoming payments and cash flow.
Designed the monetization structure with optional one-time Pro and Power upgrades.
Iterated on user flows based on testing and product review.
Tech stack
Built to be fast, private, and offline-first
App
React Native · Expo Router
State
Zustand
On-device data
SQLite · MMKV
Architecture
Offline-first, privacy-first
Payments
Google Play Billing · RevenueCat
Platform
Android · Google Play
Privacy-first by design: financial records stay on the user’s device — no remote database or account required.
Outcome & status
A real product, still evolving
Live on Google Play
Balyria is a real, publicly released Android app you can download today.
Solo-built product
Owned end to end — from first concept and wireframes to the published release.
Continuously improved
Evolving through ongoing product iteration, testing, and user feedback.
FAQ
Common questions
Is Balyria free to download?
Yes — Balyria is free to download on Google Play. It also offers optional one-time Pro and Power upgrades, but the core money-planning experience is free.
Is my financial data private?
Yes. Balyria is offline-first and privacy-first: your financial records are stored locally on your device, with no remote database or account required.
What platforms is Balyria available on?
Balyria is available on Android through Google Play.
What can I track in Balyria?
Bills, loans, debts, installments, income, expenses, and emergency-fund readiness — all feeding a payday forecast that shows what is safe to spend before your next payday.
What is payday forecasting?
Payday forecasting projects how much money is left before your next payday once upcoming bills, loan payments, and installments are accounted for — so you can plan ahead instead of reacting after payday.
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