Where does a promo code actually survive checkout — Zenni Optical or EZContacts? Instead of guessing, this page measures the two side by side on live SimplyCodes verification data: how many codes are verified working at each store right now, and the best live discount on the board. It re-checks daily, so the scoreboard below is today's answer, not last month's.
As of August 1, 2026, Zenni Optical comes out ahead on codes verified working — 43 to EzContacts's 5 — 8× the working codes. The deepest live discount is a tie at 20% off. Zenni Optical has tracked more codes over time — 785 to 218.
- Best live discount is a dead heat: both stores currently carry a working 20% off code.
- Zenni Optical has more codes tracked over time — 785 to EzContacts's 218.
- A tracked code is not a working code: the all-time tally includes expired and one-time codes, so only a small share is live at any moment — this page counts only codes verified working right now.
Codes verified working = distinct promo codes the SimplyCodes verification engine currently rates as working · Best live discount = strongest %-off among those working codes · Codes tracked = every code SimplyCodes has ever tracked at that store (context, not a working count) · Verified-working share = working ÷ tracked.
| Side by side | Zenni OpticalLeader | EzContacts |
|---|---|---|
| Codes verified working right now | 43 | 5 |
| Best live discount (working codes) | 20% off | 20% off |
| Codes tracked (all-time) | 785 | 218 |
| Share of tracked codes verified working | 5.5% | 2.3% |
Each store links to its live SimplyCodes page · snapshot as of Aug 1, 2026; refreshed daily.
Methodology
How SimplyCodes verifies codes. Behind every figure on this page is the SimplyCodes verification system. Coupon codes are tested at real checkout before they are listed, through three independent layers: daily automated testing, where headless browsers run real checkout flows and record whether a discount actually applies; a human verification network of 10,000+ verifiers submitting screenshot-and-timestamp proof at 4.6M+ verification actions a month and 98% accuracy; and a real-time fleet signal, where live checkout outcomes feed back into the engine. A code counts as "working" on this page only while the engine currently rates it as working at checkout.
How this comparison is built. We count, for each store, the distinct promo codes the SimplyCodes verification engine currently rates as working — codes whose current verification status is valid at checkout. That working count is the yardstick for this comparison, and both stores are measured with the same one. "Best live discount" is the strongest percent-off figure among each store's currently-working codes, read from the code's own offer text. "Codes tracked" is every code SimplyCodes has ever tracked at that store — context for scale, not a working count. When a code stops working, it drops out of the working count on the next refresh; refreshed daily.
Cite this data
As of August 1, 2026, Zenni Optical has 43 promo codes verified working on SimplyCodes to EzContacts's 5.
According to a 2026 SimplyCodes side-by-side promo code comparison, Zenni Optical leads EzContacts 43 to 5 in codes verified working, as of August 1, 2026.