Comidoc research dataset
Udemy Coupon Statistics
A continuously updated view of how free Udemy coupons behave in the real market: how long they remain usable, how quickly their redemption capacity disappears, and what Comidoc's live checks observe.
Comidoc research dataset
A continuously updated view of how free Udemy coupons behave in the real market: how long they remain usable, how quickly their redemption capacity disappears, and what Comidoc's live checks observe.
Verified data during the last 12 months
Data through November 7, 2026 at 11:07 PM UTC. Current and boundary months are marked partial because their cohorts are still maturing.
Median free-coupon lifetime
40.6 h
Based on 97,854 ended free coupons during the last 12 months. Lifetime ends at Comidoc's last verification detection.
Eligible cohorts only
Right-censored cohorts excluded
Repeat checks are included
How long free coupons last
The line is the median detection lifetime. The shaded range is the middle 50%. Active coupons do not enter the lifetime percentile, but they do count as survivors once they cross 24 hours or 7 days.
| Cohort | Ended coupons | Median | Middle 50% | Alive 24 h | Alive 7 days |
|---|---|---|---|---|---|
| November 2025partial | 8,422 | 4.5 days | 76.7–116.1 h | 87.8% | 0.5% |
| December 2025 | 10,684 | 4.7 days | 75.2–117 h | 88.2% | 0.6% |
| January 2026 | 10,716 | 4.6 days | 74.7–116.4 h | 86.5% | 1.2% |
| February 2026 | 10,183 | 4.5 days | 60.6–115.4 h | 84.4% | 2.7% |
| March 2026 | 7,134 | 2.2 h | 0–22.2 h | 24.3% | 13.0% |
| April 2026 | 5,940 | 3.1 h | 0–47.3 h | 31.0% | 16.3% |
| May 2026 | 6,730 | 4.4 h | 0–57.7 h | 33.5% | 13.1% |
| June 2026 | 7,290 | 4.0 h | 0–42.1 h | 30.0% | 12.7% |
| July 2026 | 7,344 | 4.7 h | 0.9–40.8 h | 30.0% | 14.0% |
| August 2026 | 7,483 | 9.2 h | 2.5–74.4 h | 34.5% | 16.4% |
| September 2026 | 7,984 | 11.2 h | 3.5–91.2 h | 36.2% | 15.9% |
| October 2026 | 6,683 | 11.0 h | 3.3–57.8 h | 41.4% | 23.1% |
| November 2026partial | 1,261 | 4.9 h | 2.5–12.6 h | 63.9% | — |
Redemption capacity
Free coupons now appear in distinct capacity tiers. Percentages use coupons created in the selected period with a known maximum, rather than mixing raw seat counts into a misleading average.
2,502 active offers with known capacity
10 uses
8,475 coupons
8.3%
100 uses
56,758 coupons
55.9%
1,000 uses
36,366 coupons
35.8%
Supply
All coupons observed by Comidoc, split between free enrollment and partial discounts. A partial first or current month is labeled in the tooltip.
30-day topic momentum
A live market map combining course opens, coupon clicks, observed seat depletion, active watchers, and fresh coupons. Updated November 7, 2026 at 10:00 PM UTC independently of the historical window above.
Reproducibility
Methodology version 2026-08-25.2. Times, cohorts, and boundaries use UTC.
Scope is 100%-off coupons only. Lifetime runs from discovery to the last Udemy verification detection for coupons now marked expired or invalid. The detection cadence can slightly overstate the exact moment a coupon stopped working.
A cohort enters the 24-hour or 7-day denominator only after that much observation time exists. Coupons still active after the threshold count as survivors; younger coupons are excluded.
Current and boundary months are preliminary. Their lifetime percentiles contain only coupons that have already ended, so fast failures appear before long-lived coupons mature.
Every availability check is counted, including repeated checks of the same coupon on the same day. The daily average begins at July 18, 2026 at 6:52 PM UTC and covers 472,326 checks in the selected window.
The 30-day score weights unique course opens (35%), coupon clicks (25%), observed seat depletion (25%), active watchers (10%), and fresh coupons (5%), then adjusts for the number of trending courses attached to each primary topic.