BundleShield ‑ Smart Sync vs Trunk ‑ Stock Sync & Bundling
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 14, 2026 for BundleShield, Oct 31, 2026 for Trunk.
The short answer
- Paid plans start at $9/month for BundleShield and $35/month for Trunk.
- Trunk lists 14 features BundleShield’s listing doesn’t mention, including Auto-updates, Automated alerts, Bulk.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Starter
- · 24-Hour Activity History
- · Automatic Stock Sync
- · Up to 5 Bundle Mappings
Growth
- · Automatic Stock Sync
- · Unlimited Activity Logs
- · Up to 20 Bundle Mappings
Scale
- · Automatic Stock Sync
- · Highest Priority Sync
- · Unlimited Activity Logs
- · Unlimited Bundle Mappings
Essential
- · 14-day free trial
- · Live chat and email support
- · Low stock level alerts
- · Real-time stock level syncing
- · Unlimited sales channels
Pro
- · 14-day free trial
- · Bundling & kitting
- · Duplicate SKU syncing
- · Everything in the Essential plan, plus:
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureSelling bundles is great, but tracking individual item stock is hard. BundleShield simplifies this inventory process. When a bundle is sold, our app updates the stock levels of the individual SKUs. If a single item runs out of stock, the bundle updates to prevent overselling. Set it up once and let the sync engine run in the background. Stop manual stock adjustments and keep your inventory accurate.
Never oversell again and let Trunk give an extra helping hand with your inventory, giving you back the bandwidth to grow and sell on even more places. Connect all your sales channels with Shopify including: multiple Shopify shops, Amazon, Bandcamp, BigCommerce, eBay, Etsy, Faire, QuickBooks Online, Square POS, Squarespace, TikTok, Walmart, Wix, WooCommerce, Xero, and more. Not selling elsewhere?
- Real-time inventory sync across all bundles and individual SKUs.
- Automatically prevent overselling when a single component runs out of stock.
- Designed to sync stock levels automatically in the background.
- Track every automated stock adjustment clearly from your activity dashboard.
- Automatically keeps stock levels synced in real-time between matching SKUs
- Powerful bundling and kitting to track components and materials
- Low stock level alerts to let you know when to replenish your inventory
- Simple and beautiful interface that puts everything at your fingertips
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  BundleShield |  Trunk |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | BundleShield | Trunk |
|---|---|---|
| App Store rating | Not published | 4.9 ★ |
| App Store reviews | Not published | 408 |
| New reviews, 28 days | Not enough data | 1 |
| Reviewers a year or more in | Not enough data | 0% |
Pricing
| Measure | BundleShield | Trunk |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $9/month(ahead) | $35/month |
| Longest free trial | 5 days | 14 days |
| Plans listed | 3 | 2 |
Listing
| Measure | BundleShield | Trunk |
|---|---|---|
| Shopify category rank | #613 | #34(ahead) |
| Shopify App Charts | Not on this week’s charts | #5 on Featured by Shopify in Inventory sync |
| Built for Shopify | No | No |
| Launched | May 15, 2026 | Aug 29, 2019 |
| Languages | 1 | 1 |
| Developer | Aksu.dev | Trunk |
FAQ
BundleShield and Trunk: common questions
- Is BundleShield or Trunk cheaper?
- Paid plans start at $9/month for BundleShield and $35/month for Trunk. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- Trunk lists 14 the others don’t mention, such as Auto-updates, Automated alerts, Bulk, Data import and export. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 14, 2026 for BundleShield, Oct 31, 2026 for Trunk; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 14, 2026 for BundleShield, Oct 31, 2026 for Trunk. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.