---
title: "Quadru App"
description: "Public Shopify app developer portfolio"
canonical_url: "https://shoplist.co/app-developers/frederico"
markdown_url: "https://shoplist.co/app-developers/frederico.md"
---

# Quadru App

Public Shopify app developer portfolio

## Public facts
- Website: https://app.riffroff.com/
- Location: Brooklyn, NY, US
- Public Shopify App Store portfolio: 2 apps
- Public identity updated: 2026-07-18 16:10:36.770236\+00

## Public app portfolio sample
| App | Category | Detected stores | Detection as of | Markdown profile |
| --- | --- | --- | --- | --- |
| Quadru Square Integration | Store data importer | 0 | 2026-11-04 | https://shoplist.co/shopify-apps/quadru-import-from-square.md |
| RiffRoff Loyalty and Rewards | Loyalty & Referrals | 0 | 2026-11-04 | https://shoplist.co/shopify-apps/riffroff-loyalty-and-rewards.md |

This profile displays 2 apps, bounded to twelve. Detection counts describe storefront evidence per app, not unique customers across the portfolio. A store using several apps is counted once for each app; adding these counts does not produce a unique store total. Missing counts or dates mean unavailable evidence.

## Related links
- [HTML profile](https://shoplist.co/app-developers/frederico)
- [Public search](https://shoplist.co/search)
- [Data methodology](https://shoplist.co/data-methodology.md)