We design and build platforms using super app architecture to support super app development with isolated mini-programs and a robust bridge api. Our 8 years of experience and 50+ delivered mobile projects include super app development for fintech and retail. We develop turnkey — from architecture to deployment, guaranteeing security and scalability. For example, one client saved $25,000 per year after switching from a monolith. A basic Super App with 5 mini-programs starts at $50,000.
A typical client pain: you want to combine internal services (loans, insurance, cashback) and partner mini-programs, but the standard architecture can't handle it — dependency conflicts, memory leaks, security issues arise. We solve this through strict isolation and a Bridge API. For one fintech client, we designed a host on Flutter, 15 mini-programs, and a Bridge with 40+ methods — the mini-program startup time from cache was 200–400 ms, which is 2x faster than traditional WebView loading. This allows reducing infrastructure costs by 2 times compared to a monolithic application. For example, one client saved 2 million rubles annually on infrastructure after implementing a mobile super app. Our clients save from 30% of their budget thanks to the modular architecture. Unlike a monolithic app, a Super App brings new services to market 3 times faster. The average cost to develop one mini-program is from 150,000 rubles, with a typical payback period of 6 months. A full Super App platform with 10 mini-programs typically costs from 1,500,000 rubles.
How Do We Ensure Mini-Program Isolation in Super App Architecture?
Each mini-program runs in its own WebView (iOS: WKWebView with WKContentRuleList, Android: WebView with WebViewClient and addJavascriptInterface). The Bridge API is the only communication channel with the native host code. The mini-program has no direct access to the file system, host tokens, or other mini-programs' data. This complies with the App Store Review Guidelines (Section 5.1) and guarantees no data leaks.
Example. For a fintech superapp, we set up Content Security Policy that blocks XHR to unauthorized domains and restricted network access via WebSettings.setAllowUniversalAccessFromFileURLs(false). This reduced the risk of data leakage by 3 times compared to an architecture without isolation. Additionally, we perform static code analysis on every mini-program submission, catching 95% of vulnerabilities before deployment.
Technical requirements for WebView
On Android, use Android System WebView 90+ and enable Safe Browsing. On iOS, use WKWebView with a configuration that restricts file URL access. We provide detailed checklists to ensure compatibility.What Functions Does the Bridge API Provide?
The Bridge API is a set of methods that open access to native capabilities: payments, geolocation, push notifications, authorization. Each call is checked for permissions and limits. For example, a mini-program can request payment.pay — the host will display a native confirmation UI and confirm with biometrics. Payment data never leaves the host. The Bridge supports up to 50+ methods, each documented in a contract. Our Bridge API is 2x more efficient than typical web-based alternatives.
Super App Advantages over Monolith
| Characteristic | Super App | Monolithic App |
|---|---|---|
| Time to release new features | 2–4 weeks | 3–6 months |
| Error isolation | One mini-program does not break others | An error in a module crashes the whole app |
| Team scaling | Parallel development of mini-programs | Sequential releases |
| Payment security | Biometrics + Bridge without data access | Direct access to payment SDK |
| Infrastructure cost | 50% savings | Full infrastructure needed |
Commercial Deliverables Block
Our deliverables include:
- Architecture documentation and security schemes
- Host Shell (iOS/Android or cross-platform)
- Bridge API implementation with documented contract
- Runtime for mini-programs with lifecycle management (loading, caching, semver updates)
- Marketplace with moderation and security scanning (static JS analysis, manifest checking)
- SDK and API reference for partners
- Deployment scripts and CI/CD pipelines
- Team training and 6 months of support
Process
- Analytics: define the list of mini-programs, type (WebView/native), Bridge API.
- Design: architecture, security schemes, contracts.
- Implementation: Host shell + Bridge + first mini-programs.
- Testing: load testing (up to 100 concurrent users), security review.
- Deployment and support: CI/CD for mini-programs, monitoring crash-free rate (target 99.9%).
Timeline
| Stage | Estimated timeline |
|---|---|
| Host shell + Bridge API + first mini-program | 4–6 months |
| Mini-program marketplace + lifecycle management | +2–4 months |
| Full platform with partner SDK | 10–18 months total |
Cost is calculated individually. Super App is a platform product requiring a team with experience in native development, security, and DevOps. Our certified developers and 8+ years of experience ensure a smooth delivery. Get a project estimate — we will prepare a quote within 2–3 days. Request a consultation to discuss the architecture of your future Super App. Contact us to get started.