Funding profile · Pediatric digital health

Joon Health

Two funding rounds have been reported in the press since 2022, totaling about $8.5 million. No SEC Form D for Joon Health, Joon App or any related name turns up in EDGAR, so neither round can be confirmed against a filing.

$8.5MSum of two press-reported rounds, 2022 to 2023
$6.4MLargest reported round, led by MaC Venture Capital and Dune Ventures (Oct 2023)
$2.1MSeed round with Y Combinator, Goodwater Capital, Cathexis Ventures (Oct 2022)
0Form D filings found on SEC EDGAR under any “Joon” company name

Data as of September 25, 2026. Company-reported figures are labeled.

Rounds at a glance

When Round Amount Investors Source
2022 Y Combinator, Winter 2022 Not disclosed Y Combinator YC data
Oct 2022 Seed round $2.1M Y Combinator, Goodwater Capital, Cathexis Ventures Local business press
Oct 2023 Round, size and stage as reported $6.4M Led by MaC Venture Capital and Dune Ventures; Blue Lion Global and North South Ventures also participated Independent report

What the filings show

Nothing. A search of SEC EDGAR’s company database for Form D filers named “Joon,” “Joon Health” and “Joon App” returns no entity that matches this company. The handful of similarly named filers on EDGAR, a “Joon Leonis” special purpose vehicle, “JOON Pro Inc.,” “Joonbug Exploration Fund,” a “Jooni” SPV, and “Joonko Diversity Inc.,” are unrelated businesses that happen to share a syllable. Neither the $2.1 million seed nor the $6.4 million round that followed it has a Form D behind it as of this search.

Reading the record

  1. Two rounds, two separate reports, no cross-check.The $2.1 million seed comes from one local business profile in October 2022. The $6.4 million round comes from one independent blog post in October 2023. No press release, filing or second outlet was found repeating either figure, so both numbers rest on a single source each.
  2. A missing Form D does not prove no money moved.Companies raising under Section 4(a)(2) of the Securities Act, rather than the Regulation D safe harbor, file no Form D at all. Given two reported priced rounds and no filing for either, that is the more likely explanation here, though it cannot be confirmed from the public record.
  3. The investor list changed completely between rounds.The 2022 seed names Y Combinator, Goodwater Capital and Cathexis Ventures. The 2023 round names MaC Venture Capital, Dune Ventures, Blue Lion Global and North South Ventures, an entirely different set of firms, consistent with a new lead group coming in for a later round rather than the same investors writing a bigger check.
  4. No non-dilutive capital on record.No NIH or NSF grant to Joon Health, Joon App or Joon App, Inc. was found, so unlike some digital health peers, none of the company’s reported capital appears to be federal grant money.
  5. A geographic detour.Around the time of the 2022 seed round, the founders were based at Brickyard, a venture-backed incubator in Chattanooga, Tennessee, rather than in the San Francisco location the company now lists. That is an operating detail, not a funding one, but it dates the seed round to a specific, verifiable moment.

Commercial signals

Signal Detail Source type
Users Reported user counts range from over 100,000 families (2022) to over 1 million users (2026), all company or portfolio-page stated. Company-stated
App store standing 4.7 out of 5 stars across 5,900 Apple App Store reviews, per a 2025 review site check. Independent
Product scope Rebranded from joonapp.io to joonhealth.co and added parent coaching and therapist referrals alongside the original app, per the company’s own site. Company-stated
Regulatory status No FDA 510(k) or PMA record found, despite the company’s own “digital therapeutic” language. Not found
Accelerator ties Y Combinator, Winter 2022 batch, and listed in the Founders, Inc. portfolio as of 2026. Accelerator record

What to watch

  • Any Form D or other SEC filing that would confirm either the $2.1 million or the $6.4 million figure.
  • A named lead or amount for a next round, given the two-year gap since the last reported raise.
  • Whether growth into coaching and therapist referrals changes the company’s regulatory exposure.

The Joon Health story on Healthcare DiscoveryHealthcare Discovery

Related companies

  • Reframe: Shared investor: Goodwater. A subscription app from Atlanta that helps people cut back on or quit drinking, built on habit change rather than treatment
  • Fitia: Shared investor: Goodwater. A Lima-built AI meal planner and calorie counter that says it has passed 10 million users across the Spanish-speaking world and is now pushing into the United States
  • Jeevam Health: Shared investor: Goodwater. A Y Combinator backed app that paired functional medicine doctors with Indian thyroid and autoimmune patients, built on the idea that medication alone was not fixing
  • Clinikally: Shared investor: Goodwater. A telemedicine platform and online pharmacy for dermatology, hair and wellness care in India, built by a Stanford-trained AI researcher and his mother's dermatology

Sources

  1. Public recordEDGAR company search for Form D filers named “Joon,” “Joon Health” and “Joon App”SEC EDGAR · searched Sep 25, 2026
  2. Local business pressBrick by Brick: Building Chattanooga’s Startup SceneChattanooga Area Chamber of Commerce, Abdiel Vallejo-Lopez · Oct 4, 2022
  3. IndependentJoon’s Behavior Improvement Tools for Kids with Mental and Behavioral DisorderMedium, Digger Insights · Oct 16, 2023
  4. IndependentJoon App Review 2026ChoosingTherapy.com, Lena Suarez-Angelino, LCSW · last updated 2025
  5. YC dataJoon Health company page and founder biosY Combinator · accessed Sep 25, 2026
  6. PortfolioJoon Health portfolio profileFounders, Inc. · accessed Sep 22, 2026
  7. CompanyJoon Health homepagejoonhealth.co · captured Mar 26, 2025
  8. Public recordFDA, NIH, NSF and Form D enrichment record for Joon HealthCompiled record, no company-specific matches · Sep 25, 2026

Compiled from SEC and other public records and published reports as of September 25, 2026. Form D notices report offerings under Regulation D; amounts reflect the filing date. Healthcare Venture Capital Fund holds no position in Joon Health. This page is not an offer to sell or a recommendation to buy any security.