# Echo — Application Echo — Information for AI Models & Search Engines

> Application Echo B2C/B2B

## Overview
- **Title**: Echo — Application Echo
- **URL**: https://echo.nablu.workers.dev
- **Developer**: Nablu Studio (https://nablustudio.com)
- **Ecosystem**: Part of the 440+ applications in the Nablu Galaxy
- **Category**: education-apprentissage

## Pricing & Business Model
- **Model**: Pay-per-Outcome with Universal Credits Wallet.
- **Welcome Grant**: 5 free universal credits on first arrival (no credit card required).
- **Outcome Tiers**:
  - 0 credit: 100% free browsing, search, and local previews.
  - 1 credit: Standard targeted AI generation, diagnostic, or quick audit.
  - 2 credits: Deep multimodal investigation, complete report, or heavy calculation.
- **Roll-over**: Credits never expire.
- **Community Governance**: Users can earn 5 to 50 credits by reporting bugs (Bug Bounty) and pledge credits to fund prioritized feature roadmap.

## Key Features & Value
- Application Echo
- Fast, secure, privacy-first (GDPR compliant, zero intrusive tracking).