---
title: "Holdline Shopify App Profile"
description: "Turn out-of-stock products into revenue without the risk of overselling. Holdline enforces pre-order limits natively through Shopify checkout — no fragile scripts, no leftover code. Tag orders instantly for warehouse/3PL fulfillment, and get alerted the moment stock is back so you can end pre-orders in one click. Isolated virtual inventory keeps your real warehouse counts untouched. Built on Online Store 2.0 Theme App Extensions — clean install, clean uninstall."
canonical_url: "https://shoplist.co/shopify-apps/holdline"
markdown_url: "https://shoplist.co/shopify-apps/holdline.md"
last_updated: "2026-10-13"
entity_type: "shopify_app"
slug: "holdline"
source: "public Shopify app profile allowlist"
---

# Holdline Shopify App Profile

> Turn out-of-stock products into revenue without the risk of overselling. Holdline enforces pre-order limits natively through Shopify checkout — no fragile scripts, no leftover code. Tag orders instantly for warehouse/3PL fulfillment, and get alerted the moment stock is back so you can end pre-orders in one click. Isolated virtual inventory keeps your real warehouse counts untouched. Built on Online Store 2.0 Theme App Extensions — clean install, clean uninstall.

## Quick answer
Holdline has 0 detected stores in Shoplist. This Markdown profile displays 0 public brand examples; it is not a complete customer list.

## Key facts
- Name: Holdline
- Monitoring status: First-adopter watch
- Developer: Sunkars
- Developer profile: https://shoplist.co/app-developers/sunkars
- Shopify App Store URL: https://apps.shopify.com/on-siparis
- Launch date: September 21, 2026
- Shoplist category: Shipping & Fulfillment
- Free trial signal: Yes

## Pricing summary
Standart Plan: $29/month

Shoplist has not yet found reliable public storefront evidence connecting a Shopify store to this app. This does not mean the app has no users. Some apps are new, admin-only, server-side, theme-independent, or otherwise difficult to detect from public storefront signals.


## App Signals
As of November 11, 2026:

- Stores running it: 0, 0.0% of the stores Shoplist tracks
- Store movement, last 28 days: +0 new stores, +0 returning, −0 removed, net 0 (estimated; 2 days held out of movement)
- Primary App Store category: Pre-orders, #116 (14-day median position)
- Listing reviews: 0

## Public callouts
- Enforces strict pre-order limits natively through Shopify checkout.
- Clean OS 2.0 Theme Block that integrates seamlessly with no ghost code.
- Dual-shield order tagging for seamless warehouse and 3PL fulfillment routing.
- Detects restocked inventory, switch back to regular sales with 1 click.
- Keeps pre-order limits in an isolated location, apart from real warehouse stock
## Shopify App Store categories
- Inventory optimization
- Pre-orders

## Data note
Profile updated: October 13, 2026. This is the profile revision date, not a guarantee that every store was checked on that date.
Public snapshot built: 2026-11-11 11:56:58.326688\+00
Detection metrics refreshed: 2026-11-11 10:00:00.157155\+00
Public app evidence date: 2026-10-13 20:05:04.058713\+00
This generated Markdown profile intentionally exposes only public, stable app-profile fields and a small public app-stack sample from Shoplist. It excludes private contact data, people data, internal scores, crawl provenance, full datasets, and unstable operational fields.

## Related links
- [HTML app profile](https://shoplist.co/shopify-apps/holdline)
- [Shopify apps directory](https://shoplist.co/shopify-apps)
- [Shoplist data methodology](https://shoplist.co/data-methodology.md)