Organization · Accelerator
Doctor Market Fit
Doctor Market Fit assists startup founders in achieving product-market fit through mentorship and structured guidance. The organization operates primarily online and serves various sectors including consumer hardware, software, and deep tech.
Overview
What Doctor Market Fit does
What Doctor Market Fit is
Doctor Market Fit assists startup founders in achieving product-market fit through mentorship and structured guidance. The organization operates primarily online and serves various sectors including consumer hardware, software, and deep tech.
How it participates in the startup ecosystem
The current public profile supports funder and program host and community and publisher capabilities. Each capability below is shown separately so organization identity and role-specific information do not get conflated.
Operational profile
Organization status and context
Organization status describes the entity itself. Funding and program availability appear within the relevant capability profile.
- Operational status
- Active
- Organization type
- Accelerator
- Founded
- Founded in 2016
- Approximate age
- About 10 years
- Structured capabilities
- Funder · Program host · Community · Publisher
- Last reviewed
- April 3, 2026
What Accelerator means
An accelerator is a structured, short-term program designed to speed up a startup's progress toward product-market fit, traction, fundraising, or scale.
Open the glossary entryOfficial channels
Find Doctor Market Fit elsewhere
Open the official website or a supported primary organization account.
Capability profile
Doctor Market Fit as a funder
Investment thesis
Doctor Market Fit assists startup founders in achieving product-market fit through structured mentorship and guidance.
Focus narrative
Doctor Market Fit offers mentoring services to startup founders, helping them navigate the challenges of achieving product-market fit. The organization focuses on various sectors, including consumer hardware and software, B2B, B2G (government), and deep tech. Their approach includes providing structured advice on market validation, MVP development, outreach messaging, and customer engagement.
Value beyond capital
Doctor Market Fit provides structured mentorship, tailored advice, and a flexible subscription service to help startups navigate their journey towards product-market fit.
Focus and fit
- Stages
- Pre-seed · Seed · Seed+ · Series A · Series B
- Regions
- Global
Availability
- Currently deploying
- Yes
Portfolio and track record
- Recorded portfolio count
- 350
Portfolio context
Doctor Market Fit has worked with over 350 startups and has provided mentorship to more than 1,000 founders. Notable projects include a cotton alternative based on organic plants, a dating app without chat, and an online packageless supermarket using glass jars. The organization has also supported startups in various industries, such as AI, SaaS, and consumer services.
Capability profile
Doctor Market Fit as a program host
Program thesis
Doctor Market Fit is focused on assisting startup founders in achieving product-market fit.
Focus narrative
Doctor Market Fit offers mentoring services to startup founders, assisting them in navigating the challenges of achieving product-market fit. The organization focuses on various sectors, including consumer hardware and software, B2B, B2G (government), and deep tech, providing structured advice on market validation, MVP development, outreach messaging, and customer engagement.
Value and support
Doctor Market Fit offers a mentoring subscription service called 'Jeroen as a Service' (JAAS), which includes 2 or 4 hours of call time per month, unlimited direct messaging for questions, and a one-hour kick-off deep dive session. The service is flexible and can be tailored to the needs of the startup.
Format and cadence
- Format
- Remote
Availability
- Application state
- Not published
Focus and fit
- Stages
- Accelerator · Pre-seed · Seed
- Regions
- Global
Alumni and track record
Alumni context
Doctor Market Fit has worked with over 350 startups and has provided mentorship to more than 1,000 founders. Notable projects include a cotton alternative based on organic plants, a dating app without chat, and an online packageless supermarket using glass jars.
Capability profile
Doctor Market Fit as a community
Community overview
Doctor Market Fit is an organization focused on assisting startup founders in achieving product-market fit. Founded by Jeroen Coelen, who has a background in design and experience as a startup mentor, the organization operates primarily online, providing mentorship and guidance to early-stage startups.
Community focus
Doctor Market Fit offers mentoring services to startup founders, helping them navigate the challenges of achieving product-market fit. The organization focuses on various sectors, including consumer hardware and software, B2B, B2G (government), and deep tech. Their approach includes providing structured advice on market validation, MVP development, outreach messaging, and customer engagement.
Member value
Members receive tailored mentorship through a subscription service called 'Jeroen as a Service' (JAAS), which includes call time, unlimited messaging for questions, and a kick-off deep dive session. This flexible service is designed to meet the specific needs of startups.
Membership
- Recorded members
- 1,000
- Pricing models
- fixed-tuition
Format and cadence
- Modality
- online
- Schedule
- rolling-admissions
- Commitment
- light
Availability
- Membership state
- Accepting
Audience and fit
- Audience
- Founders
- Benefits
- mentorship
- Program types
- community
- Selection criteria
- open
- Stages
- Pre-seed · Seed
- Regions
- Global
Community activity
Events and activity
Doctor Market Fit publishes a newsletter titled 'The Weekly Dispatch' via Substack, providing insights and updates relevant to startup founders.
Notable members
Jeroen Coelen is a notable startup mentor associated with Doctor Market Fit.
Capability profile
Doctor Market Fit as a publisher
Editorial focus
Doctor Market Fit is dedicated to assisting startup founders in navigating the challenges of achieving product-market fit. The organization provides structured mentorship and guidance, focusing on market validation, MVP development, outreach messaging, and customer engagement across various sectors, including consumer hardware and software, B2B, B2G, and deep tech.
Audience value
Doctor Market Fit offers tailored mentorship services that help startup founders achieve product-market fit through structured advice and support, enhancing their chances of success in the competitive startup landscape.
Format and cadence
- Content formats
- newsletter
- Primary platform
- Substack
- Cadence
- weekly
Availability
- Guest pitch state
- Not currently accepting
Audience and focus
- Audience
- Founders
- Regions
- Global
Flagship work and coverage
Flagship properties
The main publication is 'The Weekly Dispatch', a newsletter published via Substack that offers insights and updates relevant to startup founders.
Notable coverage
Doctor Market Fit has worked with over 350 startups and has provided mentorship to more than 1,000 founders, supporting notable projects such as a cotton alternative based on organic plants, a dating app without chat, and an online packageless supermarket using glass jars.
Common questions
What to know about Doctor Market Fit
Upseed classifies Doctor Market Fit under the Accelerator organization type. Its current public profile includes funder, program host, community, and publisher capabilities.
Source and update disclosure
Know what this page is based on
Source basis
Public organization and program material, official websites, and structured Upseed records.
Last reviewed
April 3, 2026
Known limits
Capability profiles appear only when a structured public profile also contains decision-useful role evidence. Terms and availability can change.
Upseed is an independent guide. It is not affiliated with or endorsed by the organization described on this page.