Shopify app

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Holdline

Name: Holdline
Price: 29 USD
Author: Sunkars

Pre-orders with built-in oversell protection

Rating on Shopify: No ratings yet
Reviews: 0
Developer: Sunkars
Launched: September 21, 2026
Pricing: $29/month. Free trial available.
Languages: English

View on the Shopify App Store

The facts

Every value below is read from the listing or computed by the published formula. Nothing is a verdict.

Rank in Pre-orders

#88 of 114

See the ranked table

Rank in Inventory optimization

#371 of 680

See the ranked table

Bayesian rating

n/a

category median 4.66

Reviews in the last 180 days

n/a

no dated reviews collected

1 and 2 star share

n/a

no rating distribution

Starting price

$29/month

band: $10 to $29 · 14-day trial

Pricing plans as listed on Shopify

All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.

Plan	Price	Billed yearly	Trial	Usage fee	Included
Standart Plan	$29/month	not offered	14 days	none stated	Unlimited pre-orders & variants; Zero per-order commission fees; Zero overselling checkout guard; Automated restock detection; 14-day free trial included

Features Shopify lists for this app

Feature handles from the listing, grouped as Shopify groups them.

Order type

Coming soon
Back orders
Out of stock
Pre-sales

Customization

Buttons
Badges

Inventory management

Inventory tracking
Auto-restock

Order management

Backorders

Notifications and analytics

Restock notifications

Data access

As disclosed on the listing. Never scored.

View customer data

Device and activity data

Device and activity data: Geolocation, IP address, browser and operating system

View staff and contributor data

Store owner

Store owner: Name, email address, phone number, physical address

View and edit store data

Products, orders, Online Store

Edit products: Inventory, products, collections
Edit orders: All order history for the last 60 days, shipping information
View Online Store: Theme
Edit other data: Locations

Developer

Sunkars

Apps in the dataset:: 1
Address:: Izmir, TR-35, TR
Website:: not stated
Support email domain:: sunkars.com
English support:: yes
Resources:: Privacy policy

Similar apps

Shopify's own similar-apps list first, then apps in the same category that share the most feature handles.

From the Shopify listingDeveloper claims, shown verbatim and collapsed. 81 words.Show

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

Turn out-of-stock items into revenue with oversell protection and clean theme blocks.

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.

Questions and comments

Questions people ask about Holdline, answered from what this page shows. Entries marked Site editor are written by the EcomAppReviews editor. Reader comments appear after a person has read and approved them, usually within a day. E-mail addresses are never published.

Last updated Oct 21, 2026. Ratings and review counts are the values shown on each app's public listing. How the numbers are computed: methodology.

0 reviews counted on the listing. Rating and count in the structured data are the values Shopify displayed when the listing was last refreshed.