Inflow
AcquiredYC S21London, GB · Founded 2020 · 20 employees · 10 known investors
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Inflow is an app-based program providing personalized coaching, strategies, and tools to help people with ADHD manage their condition. The platform combines clinical guidance from psychology experts with a supportive community, designed to make mental health support affordable and accessible for neurodiverse individuals.
Also known as InFlow · Inflow ADHD
Founders & leadership· Y Combinator alumni (S21)
Inflow was founded in 2020 by Levi Epstein and Seb Isaacs.


Investors · 10
How we know: Hoxton Ventures's portfolio page · techcrunch.com · research · techcrunch.com · Not right? Tell us
How we know: Octopus Ventures's portfolio page · funding news · techcrunch.com · research · techcrunch.com · Not right? Tell us
How we know: the Y Combinator directory · Not right? Tell us
How we know: open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
How we know: funding news · techcrunch.com · Not right? Tell us
How we know: Y Combinator's founder network · Not right? Tell us
Also in the syndicate · 2
Funding
SEC filings, press & company announcements$11M disclosed across 1 of 4 rounds · 2022–2023
- $11MSeries AJan 2023 · 2 sources
Octopus Ventures (lead), Hoxton Ventures, Route66 Ventures
Source ↗ - Undisclosed amountSeedJan 2022
Hoxton Ventures (lead), Rhythm VC, Route 66 Ventures
Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
Company profile
researched Aug 2026Inflow is a London-based digital health company that develops a subscription self-help app for adults with attention deficit hyperactivity disorder (ADHD). The product is built around cognitive behavioral therapy (CBT) techniques and delivers psychoeducation, daily exercises and challenges focused on habit development, ADHD-oriented mindfulness practices, and community support. Members can also join group and community sessions, including live events hosted by qualified clinicians and in-app coaches.
The company describes the app as an affordable and accessible route to managing ADHD symptoms, created in response to barriers to behavioral health care such as long clinician wait times and administrative hurdles. Its founding team includes a clinical psychologist with more than a decade of experience treating ADHD in children and adults, and the company has said the app was developed "by people with ADHD for people with ADHD." In November 2022 Inflow expanded beyond self-help content into telehealth through the acquisition of Lina Health.
Founding story
Inflow was founded in London in 2020 by Levi Epstein, Seb Isaacs and Dr. George Sachs. Sachs is a clinical psychologist with more than a decade of experience treating ADHD in children and adults. According to the founders, the app was created in response to difficulties people face accessing behavioral health clinicians, including long wait times and bureaucratic hurdles, and was built by people with ADHD for people with ADHD. Co-founder Levi Epstein previously worked as a product manager at Babylon Health and studied at the London School of Economics and Imperial.
Business model
Inflow sells a direct-to-consumer subscription to its ADHD self-management app. New users receive a seven-day free trial, after which they convert to a monthly or annual plan; the annual plan was reported at around $200 per year. Beyond app content, the company offers group and community-based support and live events led by qualified clinicians and in-app coaches, and it expanded into telehealth services via its acquisition of Lina Health.
Consumer subscription revenue following a seven-day free trial, billed monthly or annually, with the annual option priced at approximately $200 per year.
Traction
Inflow reported preliminary open-study results indicating that members experienced a decrease in ADHD symptoms and impairment, and published a peer-reviewed feasibility and usability study in August 2022. The company had raised $14 million in total since its 2020 founding as of January 2023 and reported a team size of 20 on its Y Combinator profile.
Latest developments
In January 2023 Inflow closed an $11 million Series A led by Octopus Ventures with participation from existing investors Hoxton Ventures and Route66 Ventures, earmarked for product development and hiring, and added Octopus health tech partner Will Gibbs to its board. This followed the November 2022 acquisition of telehealth company Lina Health. Y Combinator's directory lists the company's status as acquired.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Inflow operates in the digital ADHD care market alongside companies addressing diagnosis, coaching, telehealth and medication management, including Done, Cerebral, Brili, Tiimo and Elemy, and within the broader growth of self-therapy applications. Co-founder Seb Isaacs has positioned the company as taking a more holistic approach spanning the full ADHD care journey.
The company positions itself as covering all aspects of the ADHD care journey rather than a single element such as diagnosis, coaching or medication, combining CBT-based self-help content with clinician- and coach-led community support and, following the Lina Health acquisition, telehealth. It also emphasizes peer-reviewed research on the app and involvement of a clinical psychologist co-founder.
Technology
A mobile self-help application delivering CBT-based content, psychoeducation, daily exercises and challenges around habit formation, ADHD-focused mindfulness techniques, and community features. The company has pursued clinical validation: co-founder Dr. George Sachs and colleagues published a peer-reviewed feasibility and usability study of the app in August 2022, and the company said it planned a broader randomized controlled trial to assess efficacy. Preliminary open-study testing was reported to show decreases in members' ADHD symptoms and impairment.
Go-to-market
Direct-to-consumer distribution of the app with a free seven-day trial converting to paid subscription, supplemented by clinician- and coach-led community programming. The company said proceeds from its Series A would fund product development and headcount growth.
Adults living with ADHD who are seeking self-management tools; the company frames its offering as an option for people facing long waits and cost barriers in accessing behavioral health clinicians. ADHD is described as affecting as much as 10% of the global population, with one estimate placing U.S. prevalence at 3.5%.
Geography
Headquartered in London, United Kingdom, with a consumer app offering; investor base spans the UK and the United States.
History
The company was founded in 2020 in London and took part in Y Combinator's Summer 2021 batch. In January 2022 it announced a $2.3 million seed round led by Hoxton Ventures. In August 2022 the founding team published a peer-reviewed feasibility and usability study of the app, and in November 2022 Inflow acquired Lina Health to move into telehealth. In January 2023 the company announced an $11 million Series A led by Octopus Ventures, bringing total funding raised since founding to $14 million, with Octopus health tech partner Will Gibbs joining the board. Y Combinator's company directory subsequently listed Inflow's status as acquired.
Risks & controversies
Reporting notes that companies treating ADHD via telehealth and medication management have faced increased scrutiny in recent years, as loosened federal prescribing regulations in the U.S. drove membership growth; virtual pharmacy TruePill, a partner to several telehealth companies, faced Drug Enforcement Administration action against its license over controlled-substance prescriptions. Inflow's efficacy evidence at the time of its Series A was limited to a feasibility and usability study and preliminary open-study results, with a randomized controlled trial still planned.
Compiled by commissioned research from 7 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Related companies · 6
Companies working in the same space as Inflow.
Timeline · 6
launches, deals, and filingsInflow announced an $11 million Series A round led by Octopus Ventures with participation from existing investors Hoxton Ventures and Route66 Ventures, to be used for product development and team expansion.
$11M source ↗
Will Gibbs, health tech partner at Octopus Ventures, joined Inflow's board in connection with the Series A round.
Inflow expanded into telehealth through the acquisition of Lina Health.
Co-founder Dr. George Sachs and colleagues published a peer-reviewed feasibility and usability study of the Inflow app; a broader randomized controlled trial was planned.
Inflow announced a $2.3 million seed round led by Hoxton Ventures.
$2.3M source ↗
Inflow was part of Y Combinator's Summer 2021 batch, with Harj Taggar as primary partner.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
Companies House · registry record
View on Companies House ↗- Registered name
- INFLOW LTD
- Company number
- 07926271
- Status
- Dissolved
- Company type
- Private limited company
- Incorporated
- 27 Jan 2012
- Dissolved
- 25 Sept 2018
- Registered office
- 44 Oakdale Close, Halifax, HX3 5RP
- Nature of business (SIC)
- 85410 — Post-secondary non-tertiary education85421 — First-degree level higher education
- Previous names
- THE PROFESSIONAL HEALTH CARE SOLUTIONS LTD (2012–2012)
- Accounts
- last made up to 30 May 2017
Current officers
- Muhammad Sarmad Sabir — secretary, appointed 27 Jan 2012
- Waseem Ahmed — director, appointed 27 Jan 2012
- Muhammad Sarmad Sabir — director, appointed 1 Feb 2014
Source: Companies House public register · retrieved 24 Jul 2026. Contains public sector information licensed under the Open Government Licence v3.0.
In the news
▸Research sources · 7
primary sources listed
- Inflow, a platform for managing ADHD through cognitive behavioral therapy, raises $11M | TechCrunchtechcrunch.com · web
7 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Inflow do?
- London-based developer of a self-help app that helps people manage ADHD using cognitive behavioral therapy techniques.
- Who founded Inflow?
- Inflow was founded by Levi Epstein, Seb Isaacs in 2020.
- Who are Inflow's investors?
- Inflow's investors include Hoxton Ventures, Octopus Ventures, Y Combinator, Antler, octopus investments, Platform 45, Route 66 Ventures, WorldQuant Ventures.
- How much funding has Inflow raised?
- Inflow has disclosed $11M raised across 1 of its 4 known rounds.
- Where is Inflow headquartered?
- Inflow is headquartered in London, GB.











