Design, test and deploy your USSD services
Zoelya Studio is the first no-code platform for creating professional USSD services. Visual drag & drop editor, real-time simulator, and one-click deployment.
A visual editor to design your USSD flows
Create complex USSD journeys without writing a line of code. Zoelya Studio's drag & drop editor gives you full control over every step of the flow.
Visual blocks: menus, inputs, conditions, API calls, sub-menus
Drag & drop connections between journey steps
Full flow overview with zoom, navigation and minimap
Test in real conditions before publishing
The built-in simulator faithfully reproduces the USSD experience on a mobile phone. The debug panel displays every event in real time.
Phone emulator with accurate USSD menu rendering
Live debug panel: latency, sessions, errors
Test with real numbers and data before going live
Core features
Everything you need to create professional-quality USSD services.
Drag & drop editor
Design your USSD flows visually with our intuitive editor. Drag and drop blocks, connect them, and configure each step without writing a line of code.
Real-time simulator
Test your USSD journeys instantly in a simulator that faithfully reproduces the user experience on a mobile phone.
Analytics dashboard
Track your service performance with detailed metrics: sessions, completion rates, response times, and user behavior.
API & integrations
Connect your flows to your existing systems via RESTful APIs. Call external services, query databases, and enrich your journeys.
Multi-user collaboration
Work as a team on your USSD projects with granular roles and permissions: Owner, Admin, Editor, Viewer.
One-click deployment
Publish your services to production in a single click. Version management, rollback, and environment-based deployment built in.
How it works
From idea to deployment in 4 simple steps.
Design
Use the visual editor to create your USSD flow by dragging and dropping blocks: menus, inputs, conditions, API calls.
Test
Simulate the user journey in real-time in our built-in emulator. Verify every branch and every scenario.
Deploy
Publish your service in one click to the environment of your choice: staging or production.
Analyze
Track performance, identify friction points, and optimize your journeys with detailed analytics.
Compatible with all USSD gateways
Zoelya connects to any existing USSD gateway, regardless of operator or vendor. No infrastructure replacement. An application layer that adapts to your stack.
HTTP and SMPP protocols natively supported
Compatible with Comverse, Huawei, Ericsson and custom gateways
Less than 50ms added latency on the USSD chain
IP Whitelist
Restrict gateway access to authorized IP addresses
HMAC Signing
Cryptographic signature authentication on every request
Rate limiting
Request throttling to protect your gateway from overload
Webhooks & callbacks
Real-time notifications to your systems on every event
And much more
Advanced features for demanding teams.
Version management
Every change is versioned. Compare versions, roll back, and manage the lifecycle of your USSD services.
API integrations
Connect your USSD menus to any external system via REST API. Display balances, order statuses, or real-time data in your responses.
Multi-language support
Create multilingual USSD services with built-in translation management. Support African local languages.
Export and import
Export your flows in .zoe format to share, back up, or import into other projects.
Enterprise security
JWT authentication, data encryption, comprehensive logging, and security standards compliance.
Scalable infrastructure
Cloud-native architecture deployed on high-availability infrastructure with auto-scaling and 24/7 monitoring.
FAQ - Platform
Do I need to know how to code to use Zoelya?
How long does it take to deploy a USSD service?
Does Zoelya support API integrations?
How does version management work?
Can I collaborate with my team on a project?
Ready to create your USSD services?
Try Zoelya Studio for free and deploy your first service in a few hours.