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 October 14, 2026 at 9:53 PM UTC. Current and boundary months are marked partial because their cohorts are still maturing.
Median free-coupon lifetime
2.3 days
Based on 101,216 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 |
|---|---|---|---|---|---|
| October 2025partial | 5,821 | 4.6 days | 69.6–116.1 h | 84.7% | 0.5% |
| November 2025 | 11,032 | 4.4 days | 66.4–115.7 h | 86.8% | 0.7% |
| December 2025 | 10,730 | 4.7 days | 75–117 h | 88.2% | 0.6% |
| January 2026 | 10,738 | 4.6 days | 74.8–116.4 h | 86.5% | 1.2% |
| February 2026 | 10,206 | 4.5 days | 60.5–115.4 h | 84.4% | 2.7% |
| March 2026 | 7,165 | 2.2 h | 0–22.8 h | 24.5% | 13.0% |
| April 2026 | 5,973 | 3.1 h | 0–48.6 h | 31.3% | 16.6% |
| May 2026 | 6,783 | 4.5 h | 0–59.9 h | 33.8% | 13.4% |
| June 2026 | 7,329 | 4.1 h | 0–43 h | 30.2% | 12.8% |
| July 2026 | 7,385 | 4.7 h | 0.9–42.8 h | 30.2% | 14.3% |
| August 2026 | 7,609 | 9.5 h | 2.5–77.5 h | 35.1% | 16.7% |
| September 2026 | 7,768 | 11.0 h | 3.6–80.3 h | 40.6% | 20.7% |
| October 2026partial | 2,677 | 7.8 h | 3–24.4 h | 59.4% | 51.1% |
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.
2,731 active offers with known capacity
10 uses
7,676 coupons
7.3%
100 uses
52,730 coupons
50.5%
1,000 uses
44,112 coupons
42.2%
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 October 14, 2026 at 9:00 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 375,716 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.