The discount you intended.
Nothing more.
Stacked codes. Sale-item double dips. Uncapped offers. Welcome-code farming. Every loss you never intended — see it, stop it, keep the profit.
“Works perfect and absolutely needed on every Shopify site for Black Friday or other site markdowns.” — Lemonhead LA
“Very easy to use, is able to turn off and on specific discounts. Has a lot of settings and options to choose from.” — Nathan James
“Working really well for our needs, and the support team has been great — quick to respond and very helpful.” — Linda's Electric Quilters
“Great app, and even better developers — thanks Akash for adding the new features.” — TuffWraps
Decide what a code is allowed to do.
Stop stacking, keep codes off sale items, block whole patterns at once — enforced inside checkout, not after the order.
Applied at checkout
Rejected · second code
Rejected · 24SUM-*
Create offers that grow revenue without leaking margin.
- Conditions on subtotal, customer tags and products
- Different amounts for different parts of the cart
- A hard cap on every item and every order
- Abuse guards on by default
Thousands of unique codes, all fraud-safe.
One offer behind them all. Single-use, guess-resistant, and every code inherits the same cap.
+ 49,964 still printing
One code per person. Not per account.
Code farmers don't hack anything — they just sign up again. Every fresh email looks like a first-time customer. PromoLock sees the person behind the accounts, and the second redemption never goes through.
sarah.k@gmail.com
redeemed · first use
sarah.k+deals@gmail.com
blocked · tag stripped
sarah.k@googlemail.com
blocked · alias domain
shopper2291@outlook.com
blocked · same phone
guest checkout
blocked · same person
What unintended discounts actually cost you.
$23,480
gone in one month at a store doing over $1M in monthly sales — every code that did something the brand never intended. Estimate your own number
$14,208
Codes applied to items already marked down.
$9,272
Extra codes stacked beyond the one you meant.
Rules went live in June. Same promotions, less loss.