Subscribers
The count Telegram shows on the public channel profile.
We read the count and store a dated snapshot.
Large channels show a rounded value; we store it as shown. Owners get exact numbers in Telegram's official analytics. It is a point-in-time value, not a live counter.
Average views (reach)
Typical reach of one post.
Median views of the channel's last 20 posts (fewer if the channel has fewer). The median is used so a single viral post does not skew the result.
Views keep growing after publication, so very fresh posts understate reach. The value counts as measured only when posts were read.
ER by views
The share of subscribers an average post reaches.
Average views ÷ subscribers. It is not reactions or comments: true ER from reactions is visible to the owner only.
Used only for channels with ≥ 10,000 subscribers and measured views, because the ratio is noisy on small channels. Good for comparing channels of similar size, not for judging a single channel.
Growth
Change in subscribers over a window (1, 7 or 30 days).
(subscribers at the last snapshot in the window − at the first) ÷ at the first. Needs at least two snapshots and ≥ 100 subscribers at the start (≥ 1,000 in the 30-day growth ranking), otherwise the percentage inflates. Abnormal jumps (above +100% in a day, +300% in 7 days, +1000% in 30) are excluded as outliers.
Growth cannot tell real subscribers from bought ones.
Rankings
Order of channels by the chosen metric within a language and category.
Channels without scam/fake flags are included. Category is our own label from the channel title and description (Telegram publishes none); language is detected automatically from the title and recent posts.
Category and language can be wrong. Channels without a determined category do not appear in category rankings.
Audience quality
An estimate, not a percentage of bots.
A traffic light (reliable / mixed / questionable) from open signals: reach to subscribers, ER stability between snapshots, growth spikes, Telegram flags, channel age and size.
We cannot see who the subscribers are. "Questionable" is a reason to look at the channel yourself, not a verdict.