How we verify Udemy coupons
1,585 coupons are live and verified on Comidoc right now, with the most recent check just now. This page explains what “verified” actually means here — because in the coupon world, that word is usually decoration.
Where coupons come from
Coupons reach Comidoc from three sources: community submissions, our browser extensions that spot coupons while people browse Udemy, and automated collection from public coupon feeds. A submitted code is never published as-is: it first goes through verification.
What a verification checks
Each check queries Udemy's own course data with the coupon applied and reads back the actual state: the discounted price (is it really 100% off or just a small discount?), the remaining redemptions (free coupons are capped at 10 uses since early 2026), and the expiry date. The result is stored with a timestamp — the “checked 3h ago” you see on course pages is that timestamp, rendered live.
How often we re-check
Active coupons are re-verified continuously, around the clock — the fresher and more popular a coupon, the more often it gets re-checked. Since Udemy's redemption limit took effect, the median free coupon survives only a few hours; a coupon site that checks codes once a day is, mathematically, a list of dead codes. When a coupon dies, its status changes within the next verification cycle and the page says so instead of hiding it.
What each status means
| Status | What it means |
|---|---|
| Active | Verified against Udemy with redemptions remaining. The page shows how long ago the last check ran. |
| Fully redeemed | The coupon hit Udemy's redemption limit (10 uses for free coupons since early 2026). The code is real but exhausted. |
| Expired | The coupon passed its end date set by the instructor. |
| Course now free | The course itself became permanently free, so the coupon is no longer needed. |
| No longer active | Udemy rejected the code for another reason (removed by the instructor, region-restricted, or invalidated). |
What we deliberately don't do
- No affiliate links — coupons are listed because they verify, not because they pay. See how Comidoc is funded.
- No “100% working” claims on dead codes — expired coupons are shown as expired, with their history, so you can watch a course and catch the next one instead.
- No fabricated timestamps — every “checked X ago” badge comes from a logged verification.