Web
- Next.js
- TypeScript
02 — Personal finance product
Spendly
A private finance workspace for balances, transactions, budgets, goals, recurring reminders, and actionable insights across web, native iOS, and an Android beta.
- Web
- Native iOS
- Android beta
Live web + iOS · Android beta
My role
Web, native iOS, and Android product engineering, data model, and interaction design
Platforms
Web · Native iOS · Android beta
Stack
Next.js · SwiftUI · Kotlin · TypeScript · PostgreSQL · Recharts · InsForge
Technology topology
04 layersNative
- SwiftUI
- Kotlin
Insights
- Recharts
Platform
- InsForge
- PostgreSQL
System relationships · no usage percentages
01
The challenge
What needed to work
Personal finance tools become hard to trust when balances, transfers, recurring expenses, budgets, and account ownership drift apart across features or devices.
02
The approach
How I approached it
I built web, native SwiftUI, and Kotlin Android clients over the same protected finance model, with automatic balance synchronization, recurring reminders, CSV workflows, and clear budget and savings states.
03
Key decisions
Used ownership checks and PostgreSQL row-level security for user financial data.
Stored native sessions in Keychain and kept administrative credentials out of the iOS app.
Implemented native reminder banners, badges, and settings rather than wrapping the website.
Limited demo loading to empty workspaces so sample data cannot overwrite a real ledger.
04 — Outcome
Spendly delivers a complete finance workflow on the web and iOS, while its Kotlin Android beta brings the same protected finance model and core workflows to a third client without overstating its release status.
- Web + iOS + Android beta
- 8 finance data domains
- RLS-backed user data