> ## Documentation Index
> Fetch the complete documentation index at: https://docs.appdna.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Introduction
> The growth console for subscription apps
# What is AppDNA?
AppDNA is a unified platform for subscription app growth. It brings analytics, experiments, paywalls, onboarding flows, push notifications, retention journeys, and more into a single console — backed by lightweight, offline-first SDKs for every major mobile platform.
Instead of stitching together a dozen point solutions, AppDNA gives you one dashboard at [console.appdna.ai](https://console.appdna.ai) where you can design onboarding flows, configure paywalls, run A/B experiments, send push campaigns, and monitor the metrics that matter for subscription revenue.
## Architecture Overview
AppDNA is composed of three layers that work together:
```
┌──────────────────────────────────────────────────┐
│ Dashboard │
│ console.appdna.ai │
│ Analytics · Experiments · Paywalls · Onboarding │
│ Push · Retention · Webhooks · Settings │
└──────────────────┬───────────────────────────────┘
│ REST API
┌──────────────────▼───────────────────────────────┐
│ API Layer │
│ api.appdna.ai (sandbox + production) │
│ Config Bundles · Events · Webhooks · Admin │
└──────────────────┬───────────────────────────────┘
│
┌──────────────────▼───────────────────────────────┐
│ Client SDKs │
│ iOS · Android · Flutter · React Native │
│ Offline-first · Server-driven UI · Experiments │
└──────────────────────────────────────────────────┘
```
* **Dashboard** — the web console where you manage everything: create paywalls, design onboarding flows, launch experiments, send push notifications, and review analytics.
* **REST API** — the backbone that powers the dashboard and is available for direct integration. Both sandbox and production run at `https://api.appdna.ai`; the API-key prefix (`adn_test_` vs `adn_live_`) selects the environment.
* **Client SDKs** — lightweight, offline-first libraries for iOS, Android, Flutter, and React Native. SDKs handle event tracking, experiment bucketing, server-driven UI rendering, and more.
## Key Features
### Offline-First SDKs
AppDNA SDKs are designed to work without network connectivity. Events are queued locally and flushed when a connection is available. Configuration is cached on-device with automatic fallback to bundled defaults.
AppDNA SDKs are offline-first by design. Your app will never crash or degrade because of a network issue. Events queue locally, configs are cached, and everything syncs when connectivity returns.
### Server-Driven UI
Paywalls and onboarding flows are rendered from configuration delivered by the server. Update your paywall design, copy, or pricing without shipping a new app version. Changes go live in minutes, not weeks.
### A/B Experiments
Run experiments with deterministic bucketing powered by MurmurHash3. The same user always lands in the same variant — across platforms, across sessions. No server round-trip required for assignment.
### Webhook Integrations
Subscribe to 16 event types with HMAC-SHA256 signed payloads. AppDNA handles retries with exponential backoff so your integrations stay reliable.
### Config Bundles for CI/CD
Generate versioned JSON config bundles on the server and embed them in your app binary. Users get a fully configured experience on first launch with zero network latency.
## Quick Links
Install the SDK and send your first event in 5 minutes.
Understand the architecture, offline-first design, and key abstractions.
Explore the full REST API for server-side integrations.
Native Swift SDK for iOS 16+.
Kotlin SDK for Android SDK 24+.
Dart package for Flutter apps (Dart 3.0+).
JavaScript SDK for React Native >=0.76.9 (New Architecture required).