Verifying 619K code tests monthly across 649K+ stores

Codes that actually work.

Other sites guess. We verify. Every code is tested by machines, confirmed by humans, and proven by real checkouts before you see it.

Popular: Harbor Freight Vistaprint Fashion Nova Temu Quince Mercari
648,568
Stores Verified
98%
Accuracy Rate
619K+
Monthly Code Verifications
$1B+
Annual Commerce Verified at Checkout
Verification Engine

We don't list codes. We verify them.

Most coupon sites scrape codes and hope they work. 40–60% of codes on the public web are dead, restricted, or fake. We run a three-layer verification system that tests every code before you see it.

Automated Testing Active
Headless browsers simulate real checkouts across our merchant network every day.
Human Consensus Active
Tens of thousands of trained verifiers with trust scores and screenshot proof.
Fleet Signal Active
Live checkout data from extension users. Ground truth from real transactions.
Read the full methodology →
Live Verification Feed LIVE
●JK Western
Code verified: MURPHYSDIESELVerified
SIMPLYCODESJ
●Minnesota State Athletics
Code verified: FALL20Verified
jorgejavierherrera
●Minnesota State Athletics
Code submitted: FALL20New Code
jorgejavierherrera
●JK Western
Code verified: NEWTONMAKESVerified
SIMPLYCODESJ
●JK Western
Code submitted: NEWTONMAKESNew Code
SIMPLYCODESJ
●JK Western
Code verified: TREESONVerified
SIMPLYCODESJ
●JK Western
Code submitted: TREESONNew Code
SIMPLYCODESJ
●Velez by Vesna
Code verified: WELCOME10Verified
SIMPLYCODESJ
●Velez by Vesna
Code submitted: WELCOME10New Code
SIMPLYCODESJ
●Dream Pairs
Code verified: SPCODES20Verified
Morrachida04
●MarnaMaria Spices and Herbs
Code verified: TAKE10Verified
SIMPLYCODESJ
●MarnaMaria Spices and Herbs
Code submitted: TAKE10New Code
SIMPLYCODESJ
●McCormick for Chefs
Code verified: ANNIVERSARY10Verified
SIMPLYCODESJ
●McCormick for Chefs
Code submitted: ANNIVERSARY10New Code
SIMPLYCODESJ
●Indies Coffee
Code verified: WELCOMECODEVerified
ACTUALIZANDO
●Indies Coffee
Code submitted: WELCOMECODENew Code
ACTUALIZANDO
●McCormick for Chefs
Code submitted: FLAVOR2023New Code
SIMPLYCODESJ
●McCormick for Chefs
Code verified: FLAVOR2023Verified
SIMPLYCODESJ
●McCormick for Chefs
Code verified: WELCOMEVerified
SIMPLYCODESJ
●McCormick for Chefs
Code submitted: WELCOMENew Code
SIMPLYCODESJ
streaming verification events...▌
Store Directory

648,568+ stores. Every code verified.

Browse all stores Browse by category
Harbor Freight
65 verified codes
80% health
Vistaprint
23 verified codes
95% health
Fashion Nova
17 verified codes
100% health
Temu
13 verified codes
99% health
Quince
13 verified codes
100% health
Mercari
11 verified codes
96% health
Crocs
10 verified codes
95% health
Jiffy Lube
9 verified codes
99% health
Planet Fitness
9 verified codes
99% health
SHEIN
8 verified codes
99% health
Nespresso
8 verified codes
100% health
Walgreens
8 verified codes
90% health
Use SimplyCodes

Verified codes. Every surface.

Active on 649K+ stores

Browser Extension

Activates at checkout. Tests codes in the background. You save without lifting a finger. No browsing history tracked.

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SimplyCodes found 3 codes nike.com
SAVE20 98% -$24.00
FREESHIPNOW 91% Free Ship
STUDENT10 88% -$12.00
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The Glass Box

Every verdict comes with evidence.

We show the bones. Not just the answer.

Every code carries a Health Score — a freshness-adjusted confidence rating derived from automated tests, human consensus, and real checkout outcomes.

When we say a code works, that's a verdict backed by evidence. A Proof Packet with an evidence chain you can audit.

Read full methodology →
PROOF PACKET
{
  "code": "JUSTDOIT",
  "merchant": "nike.com",
  "verdict": "VERIFIED",
  "health_score": 96,
  "evidence": {
    "automated_test": {
      "result": "FUNCTIONAL",
      "tier": "PLATFORM_ADAPTER"
    },
    "human_consensus": {
      "verifications": 4,
      "confidence": "HIGH"
    },
    "fleet_signal": {
      "trend": "STABLE",
      "last_checkout": true
    }
  }
}

Data, not marketing.

Original data studies from the world's largest coupon verification dataset.

Flagship Report · Q1 2026

SimplyCodes Merchant Index

A multi-dimensional ranking of the top 100 merchants by coupon reliability, discount depth, exclusion density, and verification health.

Read the Index →
Whitepaper

Anatomy of a Verdict

How our 3-layer engine produces Proof Packets with auditable evidence chains.

~20 min read · April 2026

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Data Studies

All Research

Promo code decline rates, seasonal savings trends, fine print density index, and more.

170+ articles · data & guides

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