My journey building a fintech app that processed $1M+ in first 6 months

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1

I wanted to share my experience building PaySplit, a bill-splitting app that recently crossed $1M in transaction volume!

The Problem

Traditional bill-splitting apps either:

  • Charge high fees (3-5%)
  • Have terrible UX
  • Don’t integrate with Australian banks

Our Solution

PaySplit integrates with NPP (New Payments Platform) for instant, fee-free bank transfers between Australian accounts.

Tech Stack

Component Technology
Backend NestJS + PostgreSQL
Frontend React Native (Expo)
Payments NPP PayTo + Stripe
Infrastructure AWS (ECS + RDS)

Happy to answer questions! :money_bag:

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Congrats on the milestone! :tada: How did you handle the AUSTRAC licensing process?

3

How are you handling disputed transactions? That’s always a challenge in peer-to-peer payment apps.

4

The NPP integration is brilliant! Did you use a payment aggregator or integrate directly?

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We use a licensed payment aggregator (Zepto) which handles NPP connectivity. Direct integration would require ADI license!