SANDBOX :: ACTIVE :: READY

USSD Mobile Money
Simulator Platform

Test Tigo Pesa and M-Pesa workflows in a safe, offline environment. Perfect for developers and trainers to practice transaction flows without real network connections.

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Gateway Latency

< 12ms

Local Sandbox

Session Logs

100% Accurate

Full Trace

Network Mode

Offline

Zero GSM

USSD :: SIMULATOR_CORE_V1

READY

CARRIER:Tigo_Pesa_Sandbox/#ussd-flow

FAILTigo_Pesa_API

10:42:08.112

Insufficient balance for transfer

REF: 9941-8923-0198REJECTED

PENDM_Pesa_Gateway

10:41:55.670

Network handshake timeout (3s)

REF: 4912-0938-4721RETRYING

DONEAirtime_Purchase

10:40:19.405

Transaction confirmed: 5000 TZS

REF: channel:10928374SUCCESS

USSDSIM Engine

Secure SandboxInstant Response

USSD Simulator

Full Mobile Money Simulation

Experience authentic Tigo Pesa and M-Pesa workflows in a risk-free environment. Perfect for developers, trainers, and testing teams.

Real-Time

Tigo Pesa & M-Pesa

Balance Inquiries

Instantly check wallet balances across simulated mobile money accounts. Replicates exact USSD response latency and formatting.

Balance Check Success

Bal: 45,000 TZSVerified

Live balance retrieval simulation

Carrier-specific menu formatting

Secure PIN-protected access flow

Instant ResponseDetails

Secure Flow

Transaction Engine

Peer-to-Peer Transfers

Test end-to-end money transfer workflows. Validate recipient verification, amount entry, and transaction confirmation prompts.

Transfer FlowActive

Processing100%

Recipient validation logic

Transaction limit enforcement

Authentic confirmation receipts

Risk-Free TestingDetails

Instant Load

Utility Payments

Airtime Top-Ups

Simulate airtime purchase flows for self or others. Perfect for training staff on rapid utility payment sequences.

Airtime Load Pending

Amount: 5,000 TZSConfirmed

Self and third-party top-ups

Denomination selection menus

Success notification simulation

Rapid ExecutionDetails

Merchant API

Merchant Services

Utility Bill Payments

Replicate complex bill payment menus including LUKU, water, and TV subscriptions with accurate reference number validation.

Stage: PaymentStep 3 of 3

Merchant code lookup simulation

Reference number verification

Automated payment status logs

Full Menu LogicDetails

Debug Ready

Developer Tools

Diagnostic Session Logs

Capture every USSD interaction in a detailed log. Analyze request-response cycles to optimize your integration logic.

Session LogID #992

USSD Request Sent1s ago

Chronological event tracking

Raw USSD payload inspection

Exportable session history

Zero BlindspotsDetails

Start your USSD simulation today

Access our full suite of mobile money tools and start testing your transaction flows.

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Simulator Flow

How USSDSIM Simulates Telecom

From carrier selection to instant transaction feedback, experience a risk-free environment for testing mobile money workflows.

PHASE 01Network Protocol Setup

Carrier Selection

Choose between Tigo Pesa or M-Pesa protocols to initialize the simulated USSD gateway environment.

Authentic USSD menu tree replication

Instant response time simulation

Zero-risk testing environment

View Docs

Carrier Protocol

Tigo / M-Pesa

Ready

Tigo Pesa Menu

ActiveStandard

M-Pesa Menu

ActiveStandard

Custom Shortcode

ReadyCustom

Gateway Latency12ms

Simulator Performance

USSD Simulator Comparison

Compare the technical parity of our simulator against real-world mobile money gateways. Experience authentic transaction flows in a secure, web-based environment.

100% Safe

Risk-Free Sandbox

Test transaction flows without real network connections or financial risk.

< 1ms

Instant Response

Experience sub-millisecond menu transitions mirroring real USSD gateways.

High Fidelity

Authentic Logic

Replicate complex Tigo Pesa and M-Pesa menus with high-fidelity accuracy.

Gateway Parity Matrix

Technical comparison of USSD simulation vs live network gateways.

Live Network USSDSIM

Dimension	Live Network	USSDSIM
Menu Depth Latency Advantage: Real-time gateway parity	High (3-5s per step)	Low (Instant response) Real-time gateway parity
Prompt Handling Advantage: Authentic session logic	Static text strings	Dynamic logic flows Authentic session logic
Network Simulation Advantage: Zero network dependency	Requires live GSM	Web-based sandbox Zero network dependency
Transaction Flow Advantage: Risk-free testing cycles	Manual entry errors	Automated validation Risk-free testing cycles
Session Timeouts Advantage: Flexible testing windows	Hard-coded 30s limit	Configurable intervals Flexible testing windows
Carrier Parity Advantage: Unified testing platform	Single carrier focus	Dual-carrier support Unified testing platform

Start your simulation today

Access the full suite of Tigo Pesa and M-Pesa testing tools.

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Proven Technical Results

Trusted by FinTech Developers and Trainers

See how engineers and trainers use USSDSIM to validate transaction flows, eliminate integration bugs, and teach mobile money safely.

98% faster testing

“USSDSIM replaced our manual testing cycles. Our team now validates complex Tigo Pesa transaction flows in seconds, without needing a live GSM network connection.”

Sarah Jenkins

FinTech Lead, PayFlow

Mobile Money Integration

Gateway Sync Verified

+42% bug detection

“The simulator perfectly mirrors real-world M-Pesa prompts. We caught critical edge cases in our API logic that would have cost us thousands in production.”

Marcus Omondi

QA Engineer, EastNet

Telecom Infrastructure

Instant Logic Verified

Zero training errors

“Teaching mobile money is safer with USSDSIM. My students practice transfers and balance checks in a risk-free environment that feels exactly like the real thing.”

Amina Yusuf

Digital Literacy Trainer

Financial Inclusion

Sandbox Mode Active

2.4x faster onboarding

“Custom USSD flows and automated responses have streamlined our developer onboarding. USSDSIM is the backbone of our mobile money training curriculum.”

David Kiptoo

Operations Head, TechHub

Startup Accelerator

Automated Flows Active

99.4% accuracy rate

“The interface is intuitive and robust. It prevents costly mistakes during integration and allows our team to master transaction flows on day one.”

Elena Rossi

Senior Consultant, FinTech

Payment Solutions

Secure Flow Handled

14k+ monthly sessions

“Reliability is key for lab testing. USSDSIM provides rock-solid uptime, strict protocol rules, and clear administrative control across all our projects.”

Arjun Mehta

Managing Partner, Labs

Telecom Diagnostics

Multi-Carrier Active

99.98%

Simulator Uptime

3.2M+

Transactions Simulated

4.9 / 5

Developer Rating

15 min

Setup Time

Ready to start your simulation?

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Simulator Active

Launch Your USSD Simulator Environment Now

Experience authentic mobile money menus without real network connections. Perfect for developers, trainers, and testing transaction flows in a risk-free sandbox.

View Documentation Explore Features

100% Offline Sandbox

Instant Prompt Response

Secure Local Testing

Support & ResourcesTechnical Help

Developer Support

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+254 200 000 000

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