B2B PO Guard — Require PO vs Quantity Limit: MOQ & Min/Max
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for B2B PO Guard, Nov 4, 2026 for Quantity Limit.
The short answer
- Both list a free plan. Paid plans start at $19.99/month for B2B PO Guard and $9.99/month for Quantity Limit.
- Quantity Limit lists 5 features B2B PO Guard’s listing doesn’t mention, including Inventory planning, Inventory sync, Purchase orders.
Head to head
- United States
- Australia
- United Kingdom
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 1 live PO rule, up to 50 orders/mo
Pro Monthly
- · Beyond Free: deposits + review routing
Advanced Monthly
- · Beyond Pro: Plus payment hiding
Free — 3 products
- · Checked at checkout
- · Email support
- · Limits on up to 3 products or variants
- · Messages on product page and cart
- · Minimum, maximum and MOQ limits
- · Up to 50 orders checked a month
Basic
- · Cart total minimum and maximum
- · Email support
- · Everything in Free
- · Limits on up to 10 products or variants
- · Sell in packs (quantity multiples)
- · Up to 250 orders checked a month
Pro
- · Everything in Basic
- · Limits per customer over time
- · Priority support
- · Product groups and collection limits
- · Scheduled limits and custom messages
- · Unlimited products, variants and orders
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featurePurpose-built for what native B2B terms don't check: PO number format, prefix, regex, and uniqueness rules, previewed live before you publish. Set deposit percentage guardrails and route orders above a threshold for manual review and approval, with approver email alerts. Works alongside native Net Terms - D2C and no-company checkouts stay untouched.
Set a minimum, maximum or multiple for any product, variant, collection or the whole cart. Shoppers see your message on the product page and in the cart, and Shopify checks every order again at checkout, including Buy it now. Use it for wholesale MOQs, case packs, limited drops or one-per-customer sales.
- Require and validate PO numbers with B2B checkout guardrails.
- Set deposit and Net term rules while keeping D2C checkouts unchanged.
- Route selected B2B orders for review and keep rollback proof.
- Set per-product or global max quantity limits per order
- Real-time cart and storefront validation to block over-quantity orders
- Customise error messages and schedule time-based purchase restrictions
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 |  B2B PO Guard |  Quantity Limit |
|---|---|---|
| Detected stores | Not published | 225 |
| Net store change, 28 days | 0 | +1 |
| Stores added, 28 days | Not enough data | 1 |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Health & Beauty, Apparel & Accessories, Food, Beverages & Tobacco |
| Top store countries | Not published | United States, Australia, United Kingdom |
Reviews
| Measure | B2B PO Guard | Quantity Limit |
|---|---|---|
| App Store rating | Not published | 4.3 ★ |
| App Store reviews | Not published | 13 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | B2B PO Guard | Quantity Limit |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $19.99/month | $9.99/month(ahead) |
| Longest free trial | 7 days | 7 days |
| Plans listed | 3 | 3 |
Listing
| Measure | B2B PO Guard | Quantity Limit |
|---|---|---|
| Shopify category rank | #116 | #27 |
| Shopify App Charts | Not on this week’s charts | #14 in Order limits |
| Built for Shopify | No | No |
| Launched | Jun 8, 2026 | Jun 20, 2025 |
| Languages | 1 | 1 |
| Developer | momiji-shop | PantherCodX LLP |
FAQ
B2B PO Guard and Quantity Limit: common questions
- Is B2B PO Guard or Quantity Limit cheaper?
- Both list a free plan. Paid plans start at $19.99/month for B2B PO Guard and $9.99/month for Quantity Limit. 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?
- Quantity Limit lists 5 the others don’t mention, such as Inventory planning, Inventory sync, Purchase orders, Real-time updates. 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 13, 2026 for B2B PO Guard, Nov 4, 2026 for Quantity Limit; 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 13, 2026 for B2B PO Guard, Nov 4, 2026 for Quantity Limit. 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.