01
Choose KeepCart
if coupon extensions auto-applying codes at checkout is your main leak, or you want leaked codes taken down from coupon sites.
Comparison · Shopify discount apps
KeepCart and PromoBeacon both deal with discounts going wrong, but they do different jobs. KeepCart works at checkout and on coupon sites. PromoBeacon reads your orders and flags discounts that don’t look like your normal promotions.
Side by side
| KeepCart | PromoBeacon | |
|---|---|---|
| Main job | Blocks coupon browser extensions (Honey, Capital One Shopping, RetailMeNot and others) at checkout, and finds and requests takedowns of leaked codes on coupon sites. | Learns each promotion’s normal range from your order history and flags orders that don’t fit, with the reason in plain English. |
| What it flags | Leaked codes across 100+ sites, extension activity, duplicate accounts and resellers (on blocking plans). | Unusually deep discounts, unexpected code stacking, unusually large discount amounts, promotions reaching far more items than usual, and codes suddenly used far more than normal. |
| Touches checkout | Yes. Blocking runs at checkout. | No. Read-only: never edits, blocks or creates discounts. |
| Tells you where a code leaked | Yes. | No. It flags the jump in usage a shared code causes, not the site it was posted on. |
| Catches mistakes in your own discount setup | Not its focus. | Yes. Unplanned stacking or an over-deep promo shows up on the first orders that use it. |
| Price | Free plan (monthly coupon-site scan, 40+ leak sources). Paid from $49/month. 30-day free trial. | Free plan (100 orders/month, all five checks, no email alerts). Starter $12/month, Pro $24/month with email alerts. 7-day free trial. |
| Track record | 5.0 stars from 81 reviews. Built for Shopify. | New app (launched September 2026). No reviews yet. |
Competitor details are taken from each app’s public Shopify App Store listing on 12 October 2026. Check their listings for current pricing and features.
Which one fits
01
if coupon extensions auto-applying codes at checkout is your main leak, or you want leaked codes taken down from coupon sites.
02
if you want to know when an order’s discount looks wrong, whatever the cause, without adding anything to checkout. From $0 to $24 a month.
03
They barely overlap. KeepCart works on the leak. PromoBeacon shows what still came through on real orders.
No. PromoBeacon is read-only. It never changes checkout or blocks codes.
No. It flags a code suddenly used far more than normal, which is a common sign it was shared. It can’t tell where it was shared.
Yes. PromoBeacon only reads orders and discounts, so it doesn’t conflict with checkout apps.
No. PromoBeacon is made by MoeZee Shop. KeepCart is a separate company and is named here only for comparison.