r/QuantifiedSelf

Community Overview
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About r/QuantifiedSelf

Welcome to QuantifiedSelf.

The community at a glance

r/QuantifiedSelf is a Subreddit for Quantified Self Trackers with roughly 25K members. It has been around since 2011. It uses a forum format for communication. It is the 5th largest community in the Quantified Self topic page.

Roughly 8K members have joined in the past year. Popular discussion topics include Tracking, Health, and Data. Common discussion themes are Solution Requests and Advice Requests. Product recommendations often mention tracking app, wearable, and smartwatch.

On Reddit
Established 2011
25K Members

Community Topics

Community Features

Forum

This community has a forum

Subreddit Analysis

via GummySearch
Yearly: +8K members
Growth: +44.5% / year

Member growth over time

All time (yearly)

  • 2013: 777 members
  • 2014: 788 members
  • 2015: 517 members
  • 2016: 517 members
  • 2017: 721 members
  • 2018: 1K members
  • 2019: 1K members
  • 2020: 2K members
  • 2021: 2K members
  • 2023: 4K members
  • 2024: 2K members
  • 2025: 5K members
  • 2026: 5K members

Past year (monthly)

  • Jul: 249 members
  • Aug: 316 members
  • Sep: 345 members
  • Oct: 377 members
  • Nov: 637 members
  • Dec: 595 members
  • Jan: 479 members
  • Feb: 695 members
  • Mar: 1K members
  • Apr: 975 members
  • May: 1K members
  • Jun: 487 members

Themes

  • Solution Requests
    9 posts in the past month
    1. I want to share how I use "Excel" to track habits and metrics
    2. I was tired of Whoop being a subscription so I made the habit tracking part into an app myself.
    3. Built an app to track health symptoms and prep for doctor visits
    #1
    Solution Requests
    I want to share how I use "Excel" to track habits and metrics · I was tired of Whoop being a subscription so I made the habit tracking part into an app myself. · Built an app to track health symptoms and prep for doctor visits
    9
  • Advice Requests
    9 posts in the past month
    1. Dad just died of a heart attack at 60. Heart Attacks took every man on his side. What can I do? 36M
    2. Summary of research on the "most accurate" health wearable by metric. Oura Ring, Apple Watch, Fitbit, Garmin, etc.
    3. May 2026 Quantified Self Summary
    #2
    Advice Requests
    Dad just died of a heart attack at 60. Heart Attacks took every man on his side. What can I do? 36M · Summary of research on the "most accurate" health wearable by metric. Oura Ring, Apple Watch, Fitbit, Garmin, etc. · May 2026 Quantified Self Summary
    9
  • Self-Promotion
    5 posts in the past month
    1. I built a tool that turns your Apple Health + Whoop data into a local SQL database — no uploads, no cloud, no accounts. Still early but wanted to share.
    2. I built an open-source system to define goals, pull in Fitbit data, and query your life with JavaScript or AI
    3. I recently took over r/Lifelogging, which has been pretty quiet for a while, and I’m trying to bring it back to life!
    #3
    Self-Promotion
    I built a tool that turns your Apple Health + Whoop data into a local SQL database — no uploads, no cloud, no accounts. Still early but wanted to share. · I built an open-source system to define goals, pull in Fitbit data, and query your life with JavaScript or AI · I recently took over r/Lifelogging, which has been pretty quiet for a while, and I’m trying to bring it back to life!
    5
  • Ideas
    1 post in the past month
    1. Thinking about building an app that tracks your day automatically — does this sound useful?
    #4
    Ideas
    Thinking about building an app that tracks your day automatically — does this sound useful?
    1
  • Opportunities
    1 post in the past month
    1. The health tracking ecosystem is so fragmented. Here's my setup, open to suggestions.
    #5
    Opportunities
    The health tracking ecosystem is so fragmented. Here's my setup, open to suggestions.
    1

Topics

  • Tracking
    94 posts in the past month
    1. Tracking my 2026
    2. 12 years of personal fitness tracking without looking at raw numbers — using Z scores to measure overall fitness
    3. tracking HRV + sleep + body comp on one device.. anyone actually doing this?
    #1
    Tracking
    Tracking my 2026 · 12 years of personal fitness tracking without looking at raw numbers — using Z scores to measure overall fitness · tracking HRV + sleep + body comp on one device.. anyone actually doing this?
    94
  • Health
    78 posts in the past month
    1. *Updated* summary of research on the "most accurate" health wearable by metric. Oura Ring, Apple Watch, Fitbit, Garmin, Samsung Galaxy Watch, etc.
    2. me trying to make sense of all my health data
    3. when tracking your health includes actual lab work
    #2
    Health
    *Updated* summary of research on the "most accurate" health wearable by metric. Oura Ring, Apple Watch, Fitbit, Garmin, Samsung Galaxy Watch, etc. · me trying to make sense of all my health data · when tracking your health includes actual lab work
    78
  • Data
    63 posts in the past month
    1. I started logging my Strava workouts, Whoop data and daily activities automatically into my Google Calendar
    2. I synced my Garmin data with my personal website
    3. me trying to make sense of all my health data
    #3
    Data
    I started logging my Strava workouts, Whoop data and daily activities automatically into my Google Calendar · I synced my Garmin data with my personal website · me trying to make sense of all my health data
    63
  • App
    49 posts in the past month
    1. I built a tool that turns your Apple Health + Whoop data into a local SQL database — no uploads, no cloud, no accounts. Still early but wanted to share.
    2. App list
    3. Thinking about building an app that tracks your day automatically — does this sound useful?
    #4
    App
    I built a tool that turns your Apple Health + Whoop data into a local SQL database — no uploads, no cloud, no accounts. Still early but wanted to share. · App list · Thinking about building an app that tracks your day automatically — does this sound useful?
    49
  • Wearables
    27 posts in the past month
    1. 3 wearables/devices I spent money on that actually felt useful in managing stress, sleep and focus
    2. Can our phones and wearables detect when our mental health is starting to decline?
    #5
    Wearables
    3 wearables/devices I spent money on that actually felt useful in managing stress, sleep and focus · Can our phones and wearables detect when our mental health is starting to decline?
    27

Product recommendations

  • tracking app
    11 posts in the past month
    1. Best nutrition app
    2. best location & activity tracking app? (for iPhone)
    3. what is the best tracking app you all use
    #1
    tracking app
    Best nutrition app · best location & activity tracking app? (for iPhone) · what is the best tracking app you all use
    11
  • wearable
    4 posts in the past month
    1. Choosing wearable devices/best health tracking anyone?
    2. Best wearable for various biohacking metrics (sleep, glucose, HRV, etc)
    3. Best Wearable for in-depth health data?
    #2
    wearable
    Choosing wearable devices/best health tracking anyone? · Best wearable for various biohacking metrics (sleep, glucose, HRV, etc) · Best Wearable for in-depth health data?
    4
  • smartwatch
    2 posts in the past month
    1. Best smartwatch for Quantified self?
    2. What are the best smartwatches for health and recovery metrics?
    #3
    smartwatch
    Best smartwatch for Quantified self? · What are the best smartwatches for health and recovery metrics?
    2
View full analysis on GummySearchSynced 6/21/2026

Frequently asked questions

Who is r/QuantifiedSelf for?
Best for Quantified Self Trackers enthusiasts looking for a Reddit-based community with forum discussion.
Is r/QuantifiedSelf free to join?
This listing is not marked as paid-only. Access rules and any fees are decided by the community.
How many members does r/QuantifiedSelf have?
Roughly 25K members, based on figures reported by the community or its host. Member counts are approximate and change over time.
What platform is r/QuantifiedSelf on?
r/QuantifiedSelf runs on Reddit. Reddit communities (or "subreddits") are forum-based groups on the popular social news aggregation, web content rating, and discussion website Reddit. Reddit is commonly known as "the front page of the internet". Users submit content to the site such as links, text posts, and images, which are then voted up or down and discussed by other members. From investing Reddit communities, to professional ones, to ones just for laughs, you're likely to find a community for you on Reddit.
What topics does r/QuantifiedSelf cover?
On the Hive Index, r/QuantifiedSelf is organized under Quantified Self Trackers.
How do I join r/QuantifiedSelf?
You can join r/QuantifiedSelf by clicking this link, or pressing the "Go to community" button above.
What are the Quantified Self communities like?
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.
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Added 9/30/2021

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