🏦 NeoBank — Premium Digital Banking & Personal Finance App

A showcase-only Flutter project built with FlutterFlow & Firebase, tailored for the Tunisian market (TND).

⚠️ SOURCE CODE IS NOT AVAILABLE — This repository is a portfolio showcase of the application's architecture, design, and advanced business logic. The full source code is intentionally withheld. All screenshots and documentation are provided for demonstration purposes only.

🔐 For Hiring Managers & Recruiters: If you are interested in evaluating the implementation in more detail, I would be happy to share the full source code privately upon request.

📸 App Gallery

Dashboard — Dark Mode	Dashboard — Light Mode	Card Management

Sign In	Sign Up	Settings & KYC

Budget Limits	Add Card (OCR)	Card Parameters

New Transaction	Transaction Details + Map	Card Spending Analytics

Investment Portfolio	Portfolio Details	Bitcoin Live Tracker

🚀 Key Features at a Glance

Feature	Technology	Description
💳 On-Device Card OCR	Google ML Kit	Scan credit cards via camera, no API needed.
🤖 AI Financial Coach	Gemini 2.5 + Groq Llama 3.3	Context-aware French-language budget advisory.
🧾 Receipt OCR Scanner	OCR.space API	Auto-extract amounts and categories from paper receipts.
🔒 Biometrics + 2FA	local_auth + Twilio SMS	FaceID / Fingerprint login with OTP verification.
🗺️ Merchant Maps	Google Maps Embed	Interactive transaction location maps inside the app.
🚨 Fraud Detection	Custom Heuristic Engine	Risk scoring by amount, keywords, and transaction time.
💸 Spare Change Savings	Custom Math Logic	Rounds spending up to save micro-amounts automatically.
⚖️ Group Split Bills	Geoapify + Cloudinary	Geolocated shared expenses with media upload.
📈 Bitcoin Tracker	CoinGecko + TradingView	Live BTC prices with embedded candlestick charts.
📄 PDF Reports	pdf + printing (Flutter)	Exportable A4 budget and card statement reports.
💰 Konnect Payments	Konnect Gateway API	Recharge cards with e-DINAR (Tunisian market).
🔑 KYC Onboarding	Firebase Firestore	National ID card capture, Base64 encoding, and pending review flow.

🏗️ Technical Architecture & Ecosystem

NeoBank uses a hybrid architecture — combining on-device edge computing with Firebase cloud services and a constellation of external APIs.

graph TD
    A[Flutter App Frontend] -->|State Management and Navigation| B(FlutterFlow Core Engine)
    A -->|On-Device OCR and Biometrics| C[ML Kit and Local Auth SDK]
    A -->|Authentication and Realtime DB| D[Firebase Suite]
    A -->|Financial Advisory and Processing| E[External API Orchestrator]

    D -->|User Auth Tokens| D1[Firebase Auth]
    D -->|13 Collections and Security Rules| D2[Cloud Firestore]
    D -->|Media Storage Buckets| D3[Firebase Storage]

    E -->|Llama 3.3 70B Financial Advisory| E1[Groq API]
    E -->|Gemini 2.5 Flash Categorization| E2[Gemini API]
    E -->|French Receipt OCR Parsing| E3[OCR.space API]
    E -->|TND Payment Gateway| E4[Konnect API]
    E -->|Address Geocoding| E5[Geoapify API]
    E -->|Image Hosting| E6[Cloudinary]
    E -->|Realtime Crypto Market| E7[CoinGecko and TradingView]
    E -->|OTP and Email| E8[Twilio + EmailJS]

Tech Stack Summary

Layer	Technology	Version / Details
UI Framework	Flutter + FlutterFlow	Stable SDK `>=3.0.0 <4.0.0`
State Management	FlutterFlow App State	Reactive page-level state
Backend Database	Cloud Firestore	NoSQL Document Model
Authentication	Firebase Auth	Email/Password + Biometrics
On-Device ML	Google ML Kit	`google_mlkit_text_recognition`
Charts	fl_chart	Line, bar, and pie charts
PDF Generation	pdf + printing	A4 report export
Navigation	GoRouter	Declarative routing

🗄️ Database Architecture — Full Firestore Schema (13 Collections)

NeoBank's data model is designed around 13 Firestore collections with document references linking related entities.

Entity Relationship Overview

erDiagram
    USERS ||--o{ WALLET : "owns"
    USERS ||--o{ CARDS : "owns"
    USERS ||--o{ INVESTISSEMENTS : "holds"
    USERS ||--o{ NOTIFICATIONS : "receives"
    WALLET ||--o{ TRANSACTION : "contains"
    BUDGETS ||--o{ DEPENSE_BUDGET : "tracks"
    CARDS ||--o{ TRANSACTIONS_CARD : "logs"
    GROUPES ||--o{ MEMBRES : "has"
    GROUPES ||--o{ DEPENSES_GROUPE : "records"
    INVESTISSEMENTS ||--o{ HISTORIQUE_VALEUR : "histories"

    USERS {
        string email
        string display_name
        string uid
        string kyc_status
        string cin_image_url
    }
    WALLET {
        string nomWallet
        double soldeCalcule
        double budgetLimite
        double depenseTotale
        double revenuTotal
        bool notif50Shown
        bool notif100Shown
    }
    CARDS {
        string card_number
        string card_network
        string status
        double daily_limit
        double savings_balance
    }

👤 `users` — User Identity & KYC

Field	Type	Description
`email`	`String`	Unique login email address
`display_name`	`String`	User's full name
`uid`	`String`	Firebase Auth unique ID
`created_time`	`DateTime`	Profile creation timestamp
`phone_number`	`String`	Mobile phone number
`photo_url`	`String`	Profile picture URL
`kyc_status`	`String`	`pending` / `verified` / `rejected`
`cin_image_url`	`String`	Base64 or URL of national identity card (CIN)

💼 `Wallet` — Financial Accounts

Field	Type	Description
`nomWallet`	`String`	Wallet label (e.g., "Compte Principal")
`soldeActuel`	`double`	Raw numeric balance
`soldeCalcule`	`double`	Reconciled balance via atomic Firestore transactions
`budgetLimite`	`double`	Max monthly budget cap
`depenseTotale`	`double`	Aggregated total expenses
`revenuTotal`	`double`	Aggregated total income
`objectifEpargne`	`double`	Saving goal target amount
`texteRecu`	`String`	Temporary OCR-parsed receipt text buffer
`reculmage`	`String`	Base64-encoded receipt image (stored in Firestore to avoid Storage costs)
`notif50Shown`	`bool`	Alert flag at 50% budget consumption
`notif70Shown`	`bool`	Alert flag at 70% budget consumption
`notif90Shown`	`bool`	Alert flag at 90% budget consumption
`notif100Shown`	`bool`	Alert flag at 100% budget consumption
`Transactions`	`List<DocRef>`	References to linked `Transaction` documents

💸 `Transaction` — Wallet Transactions

Field	Type	Description
`walletReff`	`DocumentReference`	Parent `Wallet` reference
`type`	`String`	`revenu` (income) or `depense` (expense)
`categorie`	`String`	Alimentation, Transport, Santé, Achat, etc.
`montant`	`double`	Numeric amount in TND
`description`	`String`	Narrative notes
`dateTransaction`	`DateTime`	Date of transaction
`methodePaiement`	`String`	Cash, Credit Card, Cheque, etc.
`localisation`	`String`	Merchant text location
`isRecurrent`	`bool`	Recurrence toggle
`frequence`	`String`	`Chaque jour` / `Chaque semaine` / `Chaque mois`
`nextDate`	`DateTime`	Next scheduled recurrence date

💳 `cards` — Payment Cards

Field	Type	Description
`user_ref`	`DocumentReference`	Reference to cardholder's `users` record
`card_number`	`String`	12–16 digit card number ("XXXX XXXX XXXX")
`card_holder_name`	`String`	Name printed on card
`expiry_date`	`String`	Expiry "MM/YY" format
`cvv`	`String`	3-digit verification code
`card_network`	`String`	Visa, Mastercard, or Poste Tunisie
`balance`	`double`	Available card balance
`currency`	`String`	TND, USD, EUR
`status`	`String`	`Active` or `Blocked`
`daily_limit`	`double`	Max daily spending (0–2000 TND)
`current_spend`	`double`	Cumulative spend in current 24h cycle
`savings_balance`	`double`	Spare-change savings pot balance
`created_at`	`DateTime`	Card creation date

🧾 `transactions` — Card Payment History

Field	Type	Description
`card_ref`	`DocumentReference`	Reference to parent `cards` document
`merchant_name`	`String`	Merchant name
`amount`	`double`	Payment amount in TND
`type`	`String`	`debit` or `credit`
`category`	`String`	Alimentation, Factures, Transport, Entertainment, etc.
`date`	`String` / `Timestamp`	Payment date

📊 `budgets` — Category Budget Limits

Field	Type	Description
`nom`	`String`	Budget label
`categorie`	`String`	Alimentation, Transport, Shopping, Santé, Logement, Loisir
`montantMax`	`double`	Spending limit ceiling
`montantDepense`	`double`	Total amount spent so far
`montantRestant`	`double`	Remaining budget (`montantMax − montantDepense`)
`dateDebut`	`DateTime`	Budget start date
`dateFin`	`DateTime`	Budget expiry date

💸 `depense_budget` — Budget Expense Records

Field	Type	Description
`budgetRef`	`DocumentReference`	Reference to parent `budgets` document
`nom`	`String`	Merchant / item name
`montant`	`double`	Cost of purchase
`date`	`DateTime`	Date of purchase
`categorie`	`String`	Category (duplicated for indexing)
`description`	`String`	Notes

👥 `groupes` — Shared Expense Groups

Field	Type	Description
`nom`	`String`	Group name
`description`	`String`	Group purpose
`imageUrl`	`String`	Group avatar (Base64 or Cloud URL)
`lieuAdresse`	`String`	Geocoded meeting address
`latitude`	`double`	Geographical latitude
`longitude`	`double`	Geographical longitude
`hasLocation`	`bool`	Location enabled flag
`totalDepenses`	`double`	Cumulative group expenses
`memberCount`	`int`	Member count
`dateCreation`	`DateTime`	Group creation date

👤 `membres` — Group Participants

Field	Type	Description
`groupeRef`	`DocumentReference`	Reference to parent `groupes`
`prenom`	`String`	First name
`nom`	`String`	Last name
`fullName`	`String`	Cached full name (`prenom + nom`)
`avatarUrl`	`String`	Avatar image path or URL
`dateCreation`	`DateTime`	Join date

🧾 `depensesGroupe` — Group Expense Transactions

Field	Type	Description
`groupeRef`	`DocumentReference`	Reference to parent `groupes`
`montant`	`double`	Expense amount
`description`	`String`	Expense description
`payeurNom`	`String`	Name of paying member
`date`	`DateTime`	Date of expense

📈 `investissements` — Investment Portfolio

Field	Type	Description
`idUser`	`String`	Owner's Firebase Auth UID
`nom`	`String`	Investment name (e.g., "Tunisian Stocks")
`montantInitial`	`double`	Principal deposited
`montantActuel`	`double`	Current dynamic value
`montantCible`	`double`	Target amount goal
`dateDebut`	`DateTime`	Investment start date

📉 `historique_valeur` — Asset Value History

Field	Type	Description
`idInvestissement`	`DocumentReference`	Reference to parent `investissements`
`valeur`	`double`	Portfolio value snapshot
`date`	`DateTime`	Evaluation timestamp

🔔 `notifications` — In-App Notifications

Field	Type	Description
`user_ref`	`DocumentReference`	Target user reference
`message`	`String`	Notification body text
`is_read`	`bool`	Read / unread flag
`created_at`	`DateTime`	Timestamp

📦 The 5 Modules — Deep Dive

Module 1 · 💼 Wallet & Income Management (`gestion_wallet`)

Tracks global balance sheets, cumulative incomes/expenses, and enables physical invoice scanning.

Dashboard — Dark	Dashboard — Light

Advanced Business Logic:

Receipt OCR Pipeline: Encodes camera frame as Base64 → sends to OCR.space API → raw text parsed by extractMontant and extractCategorie custom Dart functions, identifying amounts and merchant categories from French receipt layouts (Carrefour, MG, Aziza, Monoprix, Clinique, Taxi).
Cost-Free Image Storage: Receipt photos are encoded to Base64 using imageToBase64 and stored directly in the reculmage Firestore field, avoiding Firebase Storage costs.
Budget Threshold Alerts: Four boolean flags (notif50Shown–notif100Shown) on the Wallet document trigger in-app notifications at 50%, 70%, 90%, and 100% consumption milestones.

Module 2 · 📊 Budgeting & AI Financial Advisory (`gestion_budget`)

Sets spending caps per category and provides AI-driven financial coaching using LLMs.

Advanced Business Logic:

Llama 3.3 70B Budget Advisor (GeminiAnalyseCall): Sends budget category, target, days remaining, and current spend to Groq. Returns a structured French-language JSON with alerts, savings actions, and recommendations tailored to Tunisian spending (TND).
Gemini Pro Dart Action (analyserBudgetIA): A native Dart custom action calling gemini-pro:generateContent with a financial advisory prompt — returns a styled TND-context budget assessment.
Structured PDF Export (exportBudgetPDF): Generates A4 reports with category progress bars, color-coded risk indicators (green/orange/red), and spent/remaining ratios using the Flutter pdf and printing packages.

Module 3 · 💳 Card Management & ML OCR Scanner (`gestion_cartes`)

Manages all user cards with security controls, spending limits, transaction maps, and AI-powered fraud prevention.

My Cards	Add Card (OCR)	Card Limits	New Transaction	Tx Details + Map	Analytics

Advanced Business Logic:

On-Device ML Card Scanner (extract12DigitCard): Activates device camera → runs google_mlkit_text_recognition Latin model entirely on-device. Corrects OCR errors ('O'→'0', 'l'→'1'), then applies regex to extract 12–16 digit sequences. Auto-fills card form fields in real time.
Luhn Algorithm Generator (generateCardNumber): Produces mathematically valid Visa card numbers using the ISO/IEC 7812 Luhn (mod-10) algorithm.
Konnect Payment Gateway (InitPaymentCall): POST to Konnect API — returns a payUrl redirect for card top-ups in TND (e-DINAR / bank card).
Geocoded Merchant Map (getMapUrl): Resolves merchant names to coordinates. Wraps an <iframe> in a custom HTML string bypassing WebView sandbox restrictions.
Heuristic Fraud Detection (isTransactionFraudulent): Scores transactions by amount, merchant keywords, and hour of execution — flags if risk score exceeds 75.
Spare Change Round-Up (getSpareChange): ceil(amount) - amount micro-amount routed to card's savings_balance.
Card Statement PDF (generateStatementPDF): Pulls Firestore transaction records and builds formatted A4 credit/debit statements.

Module 4 · 👥 Shared Expense Groups (`gestion_group`)

Group wallets for split bills — roommates, trips, events.

Advanced Business Logic:

Geoapify Geocoding (SearchPlaceGeoapifyCall): GET to https://api.geoapify.com/v1/geocode/search — returns latitude/longitude coordinates stored on groupes documents, enabling geolocated expense tagging.
Cloudinary Media Upload (UploadImageToCloudinaryCall): POST group avatars and receipt images to Cloudinary using unsigned preset. Stores returned URL in Firestore.

Module 5 · 📈 Investment & Live Crypto Tracker (`gestion_invest`)

Tracks asset portfolios, computes growth, and shows live Bitcoin data.

Investment Details	Portfolio Balance	Bitcoin Tracker

Advanced Business Logic:

TradingView Live Charts: Flutter WebView embeds TradingView's interactive candlestick widget for real-time crypto visualization.
CoinGecko BTC Tracker (GetBitcoinPriceCall): GET to https://api.coingecko.com/api/v3/simple/price — returns BTC/USD rate and 24h change. calculateBTC applies conversion rates.
Monthly Savings Recommendation (calculRecommendationMensuelle): (montantCible - montantActuel) / monthsRemaining — recommends monthly deposit to hit the target goal on time.

🔒 Security, Authentication & KYC

Sign In	Sign Up	Settings

Advanced Business Logic:

Biometric Auth (local_auth): Toggle in General Settings binds FaceID or Fingerprint scanner to session authentication.
Twilio SMS 2FA (SendTwilioSMSCall): generateOTP produces a random 4-digit code → POST to Twilio → user enters OTP to verify identity.
KYC Identity Card Capture: Camera captures user's CIN → serialized with fileToBase64Image → stored in cin_image_url with kyc_status: "pending" until admin review.
EmailJS Onboarding (SendWelcomeEmailCall): POST to EmailJS API → sends a personalized welcome email upon registration.

💻 Core Business Logic — Key Algorithms

1 · Luhn Algorithm — Valid Card Number Generation

// Generates a Visa-prefix (4) card number passing the Luhn mod-10 check
final random = math.Random();
String digits = "4"; // Visa prefix
for (int i = 0; i < 10; i++) digits += random.nextInt(10).toString();

int sum = 0;
bool alternate = true;
for (int i = digits.length - 1; i >= 0; i--) {
  int n = int.parse(digits[i]);
  if (alternate) { n *= 2; if (n > 9) n = (n % 10) + 1; }
  sum += n;
  alternate = !alternate;
}
int checkDigit = (10 - (sum % 10)) % 10;
String full = digits + checkDigit.toString();
// Returns "XXXX XXXX XXXX"
return "${full.substring(0,4)} ${full.substring(4,8)} ${full.substring(8,12)}";

2 · Heuristic Fraud Detection Engine

// Scores transaction risk — flags as fraudulent if score > 75
int riskScore = 0;

// Factor 1: Transaction amount
if (amount >= 1000)      riskScore += 60;  // High risk
else if (amount >= 500)  riskScore += 30;  // Medium risk
else if (amount >= 200)  riskScore += 10;  // Low risk

// Factor 2: High-risk merchant keywords
final highRiskKeywords = [
  'crypto', 'casino', 'bet', 'pari', 'transfert inconnu', 'western union'
];
if (highRiskKeywords.any((k) => merchantName.toLowerCase().contains(k)))
  riskScore += 45;

// Factor 3: Suspicious execution hour (2 AM to 5 AM)
final hour = DateTime.now().hour;
if (hour >= 2 && hour <= 5) riskScore += 25;

return riskScore > 75; // true = flagged as fraudulent

Fraud Scoring Table:

Trigger Condition	Risk Points Added
Amount >= 1,000 TND	+60
Amount >= 500 TND	+30
Amount >= 200 TND	+10
High-risk merchant keyword match	+45
Transaction between 2 AM and 5 AM	+25
Fraud flag threshold	> 75 points

3 · Atomic Firestore Balance Reconciliation

Prevents race conditions when wallet balances are updated concurrently across multiple sessions.

// Atomically delete a transaction and revert its effect on wallet balances
await FirebaseFirestore.instance.runTransaction((txn) async {
  final txDoc     = await txn.get(transactionRef);
  final walletDoc = await txn.get(walletRef);

  final montant = ((txDoc['montant'] ?? 0) as num).toDouble();
  final type    = (txDoc['type'] ?? '').toString()
                    .toLowerCase().trim().replaceAll('é', 'e');

  double solde    = ((walletDoc['soldeCalcule'] ?? 0) as num).toDouble();
  double depenses = ((walletDoc['depenseTotale'] ?? 0) as num).toDouble();
  double revenus  = ((walletDoc['revenuTotal']   ?? 0) as num).toDouble();

  if (type == 'depense') {
    depenses -= montant;
    solde    += montant;  // revert: add back the deducted expense
  } else if (type == 'revenu') {
    revenus -= montant;
    solde   -= montant;  // revert: subtract the added income
  }

  txn.update(walletRef, {
    'soldeCalcule': solde,
    'depenseTotale': depenses,
    'revenuTotal': revenus,
  });
  txn.delete(transactionRef); // atomic: both operations succeed or both fail
});

4 · On-Device ML Kit OCR — Card Number Extraction

// Uses google_mlkit_text_recognition — runs entirely on-device, zero network latency
final textRecognizer = TextRecognizer(script: TextRecognitionScript.latin);
final RecognizedText recognized = await textRecognizer.processImage(inputImage);

for (TextBlock block in recognized.blocks) {
  for (TextLine line in block.lines) {
    String cleaned = line.text
      .replaceAll('O', '0')  // Correct OCR artifact: letter O -> digit 0
      .replaceAll('l', '1')  // Correct OCR artifact: letter l -> digit 1
      .replaceAll(' ', '')   // Strip whitespace
      .replaceAll('-', '');  // Strip dashes

    // Match sequences of 12 to 16 digits (standard card number lengths)
    RegExp cardRegex = RegExp(r'\b\d{12,16}\b');
    final match = cardRegex.firstMatch(cleaned);
    if (match != null) return match.group(0); // Return extracted card number
  }
}

🔌 Full API Integration Table

Service	Method	Endpoint	Purpose
Konnect Gateway	POST	`api.preprod.konnect.network/api/v2/payments/init-payment`	TND card top-ups via e-DINAR
OCR.space	POST	`api.ocr.space/parse/image`	French receipt text extraction
Groq (Llama 3.3 70B)	POST	`api.groq.com/openai/v1/chat/completions`	AI budget advisory in French
Groq (Llama 3.1)	POST	`api.groq.com/openai/v1/chat/completions`	Auto transaction description generator
Gemini 2.5 Flash	POST	`generativelanguage.googleapis.com/...gemini-2.5-flash:generateContent`	Merchant categorization
Jina AI	POST	`api.jina.ai/v1/classify`	Text classification fallback
Geoapify	GET	`api.geoapify.com/v1/geocode/search`	Address to coordinates lookup
Cloudinary	POST	`api.cloudinary.com/v1_1/.../image/upload`	Group image hosting
EmailJS	POST	`api.emailjs.com/api/v1.0/email/send`	Welcome / onboarding emails
Twilio SMS	POST	`api.twilio.com/.../Messages.json`	2FA OTP SMS delivery
CoinGecko	GET	`api.coingecko.com/api/v3/simple/price`	Live BTC market price
ExchangeRate API	GET	`api.exchangerate-api.com/v4/latest/TND`	TND currency exchange rates
Google ML Kit	Local SDK	On-device (no network)	Card OCR with zero latency

⚠️ Showcase Notice — Source Code Not Available

🔒 This is a Portfolio Showcase — Source Code is Intentionally Not Included

This GitHub repository contains only the architecture documentation, database schemas, business logic descriptions, and UI screenshots of the NeoBank application.

The full Flutter/FlutterFlow source code is intentionally withheld. This project represents personal and academic work and is shared here exclusively to demonstrate technical design, architectural decisions, and advanced implementation capabilities.

If you are interested in discussing the project or exploring collaboration, feel free to reach out via GitHub.

Built with ❤️ for the Tunisian fintech ecosystem

Name		Name	Last commit message	Last commit date
Screenshots		Screenshots
lib/core		lib/core
.gitignore		.gitignore
README.md		README.md
project_documentation.md		project_documentation.md

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🏦 NeoBank — Premium Digital Banking & Personal Finance App

📸 App Gallery

🚀 Key Features at a Glance

🏗️ Technical Architecture & Ecosystem

Tech Stack Summary

🗄️ Database Architecture — Full Firestore Schema (13 Collections)

Entity Relationship Overview

👤 users — User Identity & KYC

💼 Wallet — Financial Accounts

💸 Transaction — Wallet Transactions

💳 cards — Payment Cards

🧾 transactions — Card Payment History

📊 budgets — Category Budget Limits

💸 depense_budget — Budget Expense Records

👥 groupes — Shared Expense Groups

👤 membres — Group Participants

🧾 depensesGroupe — Group Expense Transactions

📈 investissements — Investment Portfolio

📉 historique_valeur — Asset Value History

🔔 notifications — In-App Notifications

📦 The 5 Modules — Deep Dive

Module 1 · 💼 Wallet & Income Management (gestion_wallet)

Module 2 · 📊 Budgeting & AI Financial Advisory (gestion_budget)

Module 3 · 💳 Card Management & ML OCR Scanner (gestion_cartes)

Module 4 · 👥 Shared Expense Groups (gestion_group)

Module 5 · 📈 Investment & Live Crypto Tracker (gestion_invest)

🔒 Security, Authentication & KYC

💻 Core Business Logic — Key Algorithms

1 · Luhn Algorithm — Valid Card Number Generation

2 · Heuristic Fraud Detection Engine

3 · Atomic Firestore Balance Reconciliation

4 · On-Device ML Kit OCR — Card Number Extraction

🔌 Full API Integration Table

⚠️ Showcase Notice — Source Code Not Available

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👤 `users` — User Identity & KYC

💼 `Wallet` — Financial Accounts

💸 `Transaction` — Wallet Transactions

💳 `cards` — Payment Cards

🧾 `transactions` — Card Payment History

📊 `budgets` — Category Budget Limits

💸 `depense_budget` — Budget Expense Records

👥 `groupes` — Shared Expense Groups

👤 `membres` — Group Participants

🧾 `depensesGroupe` — Group Expense Transactions

📈 `investissements` — Investment Portfolio

📉 `historique_valeur` — Asset Value History

🔔 `notifications` — In-App Notifications

Module 1 · 💼 Wallet & Income Management (`gestion_wallet`)

Module 2 · 📊 Budgeting & AI Financial Advisory (`gestion_budget`)

Module 3 · 💳 Card Management & ML OCR Scanner (`gestion_cartes`)

Module 4 · 👥 Shared Expense Groups (`gestion_group`)

Module 5 · 📈 Investment & Live Crypto Tracker (`gestion_invest`)