Shopify app
NewOnceOnly: Discount Protection
Spots the same buyer behind a new email and blocks...
- Rating on Shopify
- No ratings yet
- Reviews
- 0
- Developer
- Diallo Media
- Launched
- October 8, 2026
- Pricing
- Free plan available. Free trial available.
- Languages
- English, German
The facts
Every value below is read from the listing or computed by the published formula. Nothing is a verdict.
Bayesian rating
n/a
category median 4.46
Reviews in the last 180 days
n/a
no dated reviews collected
1 and 2 star share
n/a
no rating distribution
Starting price
$49/month
band: $30 to $99 · 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. See all pricing options
| Plan | Price | Billed yearly | Trial | Usage fee | Included |
|---|---|---|---|---|---|
| Audit | Free | not offered | none | none stated | 12 months of orders, amount per code; Spots repeat buyers as orders come in; No volume limit; Built in Germany, servers in Frankfurt |
| Protect | $49/month | $468/year | 14 days | none stated | Everything in Audit; Up to 2,000 orders a month; Blocks protected codes at checkout; Or lets them through and tags them; Three protection levels, your wording; Email support; Built in Germany, servers in Frankfurt |
| Protect Plus | $149/month | $1428/year | 14 days | none stated | Everything in Protect; Orders with no monthly limit; Hold detected orders until you decide; Exemptions for B2B, resellers and staff; Download order rows as CSV; Priority support; Built in Germany, servers in Frankfurt |
Features Shopify lists for this app
Feature handles from the listing, grouped as Shopify groups them.
Fraud types
- Fake accounts
Prevention tools
- Order validation
- Order hold
- Custom rules
- Fraud filters
Alerts and analytics
- Suspicious activity
- Fraud notifications
- Visitor analytics
- Email notifications
Works with
Third-party integrations link to their hub when 5 or more apps name them. Shopify's own surfaces are listed separately and never counted as integrations.
- Advanced Store
- Basic Store
- Plus Store
- Shop Admin
Shopify surfaces: Checkout, Shopify Admin, Online Store
Data access
As disclosed on the listing. Never scored.
View customer data
Sensitive data, device and activity data
- Sensitive data: Name, email address, phone number, physical address
- 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
Customers, orders, discounts, Shopify Functions
- View customers: Customer data
- Edit orders: All order history, merchant managed fulfillment
- Edit discounts: Discount codes and promotions
- Edit Shopify Functions: Cart and checkout validations
Developer
Diallo Media
- Apps in the dataset:
- 3
- Address:
- Schwachhauser Heerstr. 18, Bremen, 28209, DE
- Website:
- onceonly.diallomedia.de
- Support email domain:
- diallomedia.de
- English support:
- yes
- Resources:
- Privacy policy, FAQ
Similar apps
Shopify's own similar-apps list first, then apps in the same category that share the most feature handles.
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From the Shopify listingDeveloper claims, shown verbatim and collapsed. 96 words.Show
- How much of 12 months of welcome discounts went to repeat buyers
- Recognizes the same person behind a new email, address or account
- Rejects protected codes in the cart or lets them through and tags the order
- Groups codes into campaigns: one discount per person & no Shopify Plus required
- Exemptions for B2B, resellers and staff
Find out how much of your first-order discount goes to repeat buyers and block it at checkout.
Shopify's "one per customer" only counts accounts and emails. Anyone with a second email gets your welcome discount again and you never see it happen.
OnceOnly first shows how much of it went to repeat buyers over 12 months. Then it recognises the same person behind a new email and address and rejects the protected code or lets it through and tags the order.
No Shopify Plus required. Only checksums are stored, never plain text. Servers in the EU.
Questions and comments
Questions people ask about OnceOnly: Discount Protection, 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 23, 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.