CASE STUDY / FLUTTER; AGORA; FIREBASE

A paid one-to-one audio service with agent presence and wallet billing.

A paid audio-talk service connecting users with advisors through one-to-one calls, agent availability and coin-based usage.

AVAILABLE ONGoogle Play ↗

BUILD FOCUSPaid one-to-one audio

ENGINEERINGFlutter

DELIVERYFlutter app

01 · PROJECT CONTEXT

The product challenge

Users need to know whether an advisor is available, what a call costs and when a session is active. The call lifecycle also has to remain reliable when the app moves into the background.

MY CONTRIBUTION

Built Flutter call and wallet experiences with Agora calling, agent presence, usage billing and background-call handling.

02 · IMPLEMENTATION

Implementation & engineering decisions

01Connected agent presence and availability with the user-facing call journey.
02Integrated Agora for one-to-one audio sessions and call-state handling.
03Implemented per-second coin pricing and wallet-related call flows.
04Handled background/foreground transitions and notifications around active calls.

ENGINEERING NOTES

Where the implementation needed care

Architecture

Flutter UI, Agora audio sessions and Firebase services work together around agent presence and a call lifecycle that drives coin usage.

Key challenge

Keep call status and billable duration understandable through incoming, active, ended and backgrounded states.

Delivered

Flutter audio-call experience, agent availability, coin-based usage flow and background-call handling.

03 · PRODUCT CAPABILITIES

Key features & flows

The implementation connects advisor availability and presence with one-to-one audio calls, supported by per-second coin usage and the integrations listed here.

Advisor availability and presence
One-to-one audio calls
Per-second coin usage
Wallet and payment flow
Call lifecycle handling
Background-call and notification support

AUDIOWALLETPRESENCE

ARCHITECTURE & INTEGRATION

A paid voice session ties advisor presence to time-based wallet usage.

The Flutter client combines advisor availability, session entry and call lifecycle handling. Agora carries the audio call, Firebase supports app services, and the wallet/coin flow tracks per-second usage. Background and foreground transitions are important because they affect an active paid session.

FlutterAgoraFirebaseWallet / coin billingAgent presence

HAVE A SIMILAR CHALLENGE?

Building something in paid one-to-one audio?

I can help shape the user journey, integration plan and delivery scope for a paid one-to-one audio product—from implementation through release.

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