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Case Study / FaithTech

AI-Powered Prayer & Bible App for iOS, Android & Web

A full native-to-Flutter rewrite of a Christian prayer app, pairing AI-generated, Scripture-fused prayers with a validated spiritual wellbeing tracker and a live community prayer wall.

AI-Powered Prayer & Bible App for iOS, Android & Web screens showing the My Journey wellbeing tracker, Discover library and Pray from Soul flow
Project Overview & Specs
Platforms
iOS · Android · Web
Backend
Firebase + OpenAI
Current Release
v3.1.3, July 2026
Category
Reference / Lifestyle
Codebase
406 Dart files, ~60K lines

01 / The Challenge

A full rewrite, without losing a single prayer

The app had shipped in 2023 and carried real users and years of prayer history on an older codebase. It needed to become a modern, null-safe Flutter app, stay strictly Bible-and-prayer in its content, and add a genuinely new way to track spiritual growth, without breaking what people already relied on.

The existing app was on an older, pre-null-safety codebase and needed a full rewrite onto modern Flutter without losing existing users or their prayer history

Generic guided-meditation apps blend traditions together; this app had to stay strictly Scripture-and-prayer, with every word either the user's own or drawn directly from the Bible

Traditional prayer chains break down within days, a request goes stale the moment someone forwards a text, so the community feature needed every intercessor praying the current story, not yesterday's

No existing prayer app paired validated wellbeing scales with day-to-day prayer habits in one connected dashboard

02 / Here is What We Did

A modern Flutter app, built on the same spiritual spine

We rebuilt the app as a single Flutter codebase for iOS, Android and web, wired to Firebase and OpenAI through Cloud Functions, then layered in the two modules that make it more than a prayer generator: a validated wellbeing tracker and a community prayer chain that stays current.

Every module plugs into the same Scripture spine, so a feature added later never has to fight the architecture that came before it.

STEP 01

Migration Mapping

Audited the prior codebase and Firestore schema before starting the null-safe Flutter rewrite, so existing accounts and prayer history carried over cleanly.

STEP 02

Core Prayer Engine

Rebuilt the AI prayer generation pipeline end to end, Cloud Functions calling OpenAI, backed by Provider-based state and Cloud Firestore.

STEP 03

My Journey & Community

Layered in the psychometric wellbeing tracker, the mood-based Pray from the Soul flow, and the Living Prayer Chain community module.

03 / Features

Everything a modern prayer practice needs

01

Four ways into Scripture: pray a topic from the curated Barker Chain-Reference library, pray straight through a Bible book, pray today's news mapped to Scripture, or start from a feeling in Pray from the Soul.

02

AI-generated prayers fuse the user's own words with curated Scripture chains, generated server-side by Firebase Cloud Functions calling OpenAI so no key ever ships in the client.

03

A Discovery Library of 385+ curated experiences; the codebase supports eight content types in total, including Personas, Resound and MYOB alongside the five headline formats.

04

My Journey wellbeing centre: four validated instruments, Stress (PSS-10), Anxiety (GAD-7), Fruit (WEMWBS-18) and Roots (SHALOM-36), rolled into a Christian Wellness Index and charted over time.

05

A community Living Prayer Chain, a public prayer wall plus open and closed prayer groups, where updating a request regenerates the Scripture-fused prayer for every intercessor already following it.

06

Voice Mode text-to-speech playback, Email/Google/Apple sign-in with multi-factor auth, and tiered RevenueCat subscriptions, hardened with Firebase App Check and reCAPTCHA v3.

04 / Technologies

Built as a single Flutter codebase for iOS, Android and web

Flutter
Dart
Provider
GoRouter
Auth
Firestore
Cloud Funcs
OpenAI
RevenueCat
Cloud Msging
App Check
Crashlytics
Hive

05 / Results & Impact

A production-scale content library, shipped on modern Flutter

406
Dart files in a single cross-platform codebase
66
NET Bible books bundled as offline JSON assets
71
Assessment questions across four validated instruments
3
Platforms shipped from one codebase: iOS, Android, web
4.5★
Average rating on the Apple App Store
3.7★
Average rating on Google Play, from 13 reviews
1K+
Installs on Google Play
App StoreGoogle Play

This app has enriched me and my prayer life exponentially. You succinctly state what is on your heart and it provides an appropriate Bible verse on that topic and AI creates a lovely prayer incorporating heart-felt Bible truth.

★★★★★ App Store review
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