Welcome to AppFig Documentation
Feature flags and remote config that evaluate rules client-side. Zero latency, maximum control.
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What is AppFig?
AppFig is a feature flag and remote configuration system that runs 100% client-side. Your app downloads rules once, then evaluates them locally based on:
- Events - User actions like "level_complete" or "purchase_made"
- User Properties - Attributes like subscription tier or account age
- Device Properties - Platform, OS version, country, language
Why Client-Side?
⚡ Zero Latency
No network calls for feature checks. Instant responses.
📴 Works Offline
Rules cached locally. App works without internet.
🔒 Privacy First
Events stay on device. No PII sent to servers.
💰 Cost Efficient
Lower infrastructure costs vs server-side evaluation.
Supported Platforms
| Platform | SDK Language | Status |
|---|---|---|
| Unity | C# | ✅ Stable |
| React/Web | TypeScript | ✅ Stable |
| iOS | Swift | ✅ Stable |
| Android | Kotlin | ✅ Stable |
Get Started
Select a topic from the sidebar to begin, or jump directly to:
- Quick Start Guide - Get up and running in 5 minutes
- Core Concepts - Understand features, rules, and conditions
- How It Works - Learn about rule evaluation