---
title: "ULTRO Inc."
description: "Public Shopify app developer portfolio"
canonical_url: "https://shoplist.co/app-developers/ultro5"
markdown_url: "https://shoplist.co/app-developers/ultro5.md"
---

# ULTRO Inc.

Public Shopify app developer portfolio

## Public facts
- Website: https://ultro.co.jp/gapfill/
- Location: Shibuya 2-19-15, Miyamasuzaka Building 609, Shibuya-ku, JP-13, 1500002, JP
- Public Shopify App Store portfolio: 1 apps
- Public identity updated: 2026-10-16 04:59:04.256808\+00

## Public app portfolio sample
| App | Category | Detected stores | Detection as of | Markdown profile |
| --- | --- | --- | --- | --- |
| GapFill: GA4 Server Tracking | Analytics | 0 | 2026-10-15 | https://shoplist.co/shopify-apps/gapfill-ga4-server-tracking.md |

This profile displays 1 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/ultro5)
- [Public search](https://shoplist.co/search)
- [Data methodology](https://shoplist.co/data-methodology.md)