Blubrry Statistics Description of Methodology

Blubrry Statistics Methodology

Measurement Window

Blubrry measures podcast downloads using:

  • A fixed 24-hour measurement window (per unique listener).
  • Hourly breakdowns at the episode level.
  • Monthly aggregations across all levels (episode, show, account).

Measuring Uniques

Blubrry follows the IAB Tech Lab Podcast Measurement Guidelines to identify unique downloads.
We combine:

  • IP address (anonymized, see below)
  • User Agent (browser, app, or device identifier)
Tip: Using both IP and User Agent reduces the chance of over-counting when listeners use multiple apps or devices.

IP Hashing

For privacy and compliance:

  • Blubrry hashes (scrambles) the last octet of all IPv4 addresses before storing them.
  • Hashed IPs are retained for up to 3 months, then deleted.
Note: IPv6 is not currently supported in Blubrry Statistics.

Exclusion List

To filter out non-human traffic (such as bots and data centers), Blubrry maintains an exclusion list:

Reminder: This process ensures your download stats reflect real listeners, not automated traffic.

Need help? Contact Blubrry Support: https://blubrry.com/support