> 🌐 **Language:** English · [Español](README.es.md)

# Excel & CSV Data Cleaning Mastery Bundle

9 Python data-cleaning tools, every one with a CLI and a browser GUI. Local-only, no internet. Windows / macOS / Linux.

## Quick Start

1. Download from your purchase email. Two flavors per OS — pick one:
   - **Installer** (`.dmg` on macOS, `.exe` on Windows) — wires up Desktop + Start Menu / Launchpad shortcuts.
   - **Portable .zip** — unzip and double-click. No install, no admin rights, runs from anywhere.
2. Open it (no Python needed; everything is bundled inside).
3. The app starts a local server and opens your browser. Nothing leaves your machine.

Full step-by-step including SmartScreen / Gatekeeper workarounds: [USER-GUIDE.md §1](USER-GUIDE.md#1-install).

## Docs

**Buyer-facing** (ships with the product):
- **English**: [USER-GUIDE.md](USER-GUIDE.md) · [CLI-REFERENCE.md](CLI-REFERENCE.md)
- **Español**: [USER-GUIDE.es.md](USER-GUIDE.es.md) · [CLI-REFERENCE.es.md](CLI-REFERENCE.es.md)

**Creator-only** (do not ship):
- [BUSINESS.md](BUSINESS.md) — market, pricing, marketing
- [TECHNICAL.md](TECHNICAL.md) — architecture, build pipeline, standards
- [DECISIONS.md](DECISIONS.md) — locked criteria, decision log
- [RECOVERY.md](RECOVERY.md) — full rebuild guide
- [REQUIREMENTS.md](REQUIREMENTS.md) — numbered support matrix

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**Version**: 1.6 · **Updated**: 2026-05-01 · **Owner**: Michael