What are quantified self communities?

Communities for people tracking their health data, from continuous glucose monitors and wearables to sleep logs and heart rate variability. Discussion covers protocols, device comparisons, and making sense of personal data, with a mix of biohacking enthusiasts, health researchers, and everyday people optimizing their routines.

Where do most quantified self communities live?

Reddit is the most common platform in this report (37% of 19 listings).

Are most of these communities free?

95% are free to join. The rest require payment, an application, or both.

How big is a typical quantified self community?

Among listings with public size data, the average is 81K members and the median is 6K. The median is usually the better signal for a typical group because a few large ones inflate the average.

What do these communities usually include?

Forum is the most common (79%). Others that show up often include live chat, newsletter, and online/offline events.

How does Hive Index collect this data?

Listings are submitted by community builders and researchers, reviewed for relevance, and updated with platform, feature, member, review, and traffic data where available.

Where can I see the full list?

The full directory is on Hive Index's Quantified Self topic page, where you can filter by platform, size, features, and more.

Quantified Self Communities Report: Stats, Platforms,...

Executive Summary

We analyzed 19 quantified self communities listed on Hive Index to understand where people gather, what these groups offer, and which communities attract the most interest.

The big picture: quantified self communities are broad and fragmented, with many small groups and a few very large outliers.

Source: Hive Index community database · Updated 2026-05-19

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Communities: 19
Platforms: 9
Avg members: 81K
Median members: 6K

Where Quantified Self Communities Are Hosted

Reddit
7(37%)
Slack
2(11%)
Discord
2(11%)
Skool
2(11%)
Facebook
2(11%)
Discourse
1(5%)
Independent Platforms
1(5%)
Mighty Networks
1(5%)

Format mix

Forum / feed-based
11(58%)
Chat communities
4(21%)
Private membership
3(16%)
Other platforms
1(5%)

Forum / feed-based is most common (58%), but chat communities is also well represented (21%).

Reddit leads, but Slack and Discord also represent meaningful shares.

Audience Size & Access

Community size

Tiny
<20 members
0(0%)
Small
20-100 members
0(0%)
Medium
100-1,000 members
3(16%)
Large
1,000-10,000 members
4(21%)
Huge
10,000-100,000 members
5(26%)
Massive
100,000-1M members
1(5%)
Gigantic
1M+ members
0(0%)

6 communities have unknown member counts.

Free vs paid

The average is much higher than the median (81K vs 6K), which usually means a few large groups are pulling the average up.

How Quantified Self Differs From Other Categories

Quantified Self is more free-to-join, smaller, and more platform-diverse, compared with typical Hive Index topics.

Metric	Quantified Self	Hive Index average
Free to join	95%	85%
Median members	6K	25K
Average members	81K	669K
Paid or apply-to-join	5%	15%
Live chat	32%	38%
Discord share	11%	16%

Feature Mix

Common features appear in at least 15% of listings.

Common Features

Forum
79%
Live Chat
32%
Newsletter
16%
Online/Offline Events
16%

Niche Features

Member Perks
11%
Courses
5%
Paid Community
5%
Pairing
5%

Forum appears on 79% of listings.

What Visitors Click

Outbound clicks / mo: 51

Platform supply vs. clicks

Platform	Communities	Share of communities	Outbound clicks	Share of clicks
Reddit	7	37%	6	12%
Discord	2	11%	40	80%
Skool	2	11%	2	4%
Mighty Networks	1	5%	1	2%
Meetup	1	5%	1	2%

Share is calculated within this topic.

Discord gets 80% of clicks but only 11% of listings, so visitors click it more than you'd expect from supply alone.

Most-clicked formats

Chat communities
40(80%)
Forum / feed-based
6(12%)
Private membership
3(6%)
Other platforms
1(2%)

Most-clicked features

Live Chat
41(82%)
Forum
10(20%)
Online/Offline Events
2(4%)
Courses
1(2%)
Member Perks
1(2%)
Newsletter
1(2%)

Most-clicked size ranges

Large
39(78%)
Massive
4(8%)
Huge
3(6%)
Medium
2(4%)

Top-clicked listings

Habits Garden
37(74%)
r/Biohackers
4(8%)
Blueprint by Bryan Johnson
3(6%)

Most clicks go to chat communities and forum / feed-based communities.

Trends

Founded year

2011

2015

2019

2020

2022

2023

11 communities have no founding year on file.

Most listed groups were founded around 2011.

Methodology & FAQ

Methodology

This report uses communities in the Hive Index database tagged as Quantified Self. We exclude removed or suppressed listings. Member counts, traffic, features, reviews, and ratings may vary by source and are updated periodically.

•This is a smaller slice of Hive Index's database, so read trends as directional.
•Last updated 2026-05-19

FAQ

: Communities for people tracking their health data, from continuous glucose monitors and wearables to sleep logs and heart rate variability. Discussion covers protocols, device comparisons, and making sense of personal data, with a mix of biohacking enthusiasts, health researchers, and everyday people optimizing their routines.
: Reddit is the most common platform in this report (37% of 19 listings).
: 95% are free to join. The rest require payment, an application, or both.
: Among listings with public size data, the average is 81K members and the median is 6K. The median is usually the better signal for a typical group because a few large ones inflate the average.
: Forum is the most common (79%). Others that show up often include live chat, newsletter, and online/offline events.
: Listings are submitted by community builders and researchers, reviewed for relevance, and updated with platform, feature, member, review, and traffic data where available.
: The full directory is on Hive Index's Quantified Self topic page, where you can filter by platform, size, features, and more.

Keep exploring

Browse

All Quantified Self communities

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