How much does PTBI cost?

PTBI is free to join on Skool; its listing shows no charge, read 31 Oct 2026.

How many members does PTBI have?

PTBI lists 872 members, read 31 Oct 2026.

How has PTBI's membership changed?

From 839 members on 5 Sept 2026, our first reading, to 872 on 31 Oct 2026: up 33, or 4%.

How does PTBI compare with other content and audience building communities?

PTBI is free to join, where the median priced content and audience building listing charges $27 a month. The niche median is 541 members. Pricing benchmarks by niche.

What do you get inside PTBI?

PTBI publishes 341 course modules, 8 courses, 365 posts, 13 admins. Communities with the most course content.

Skool

PTBI review

PTBI publishes 341 course modules on Skool. It is free to join.

A review on the numbers, not an opinion: nobody here has joined PTBI, and nothing below is a verdict.

PTBI, short for The Personal Trainers Business Incubator, is the Skool member area of a coaching program that helps personal trainers move from gym-based training to online coaching businesses.^[1]^[2] Its founder and CEO, Zakk Colburn, started the program in 2020; the Skool group was created in October 2024.^[1]^[3]

How we measure · Report an error or ask for removal

Members: 872
Published price: Free to join; no paid tier published here
Members, last 28 days: +15; 3 Oct 2026 to 31 Oct 2026
Rank by members: #1,934; of 6,072 sellers listed here
Size rank in niche: #432; of 1,230 sellers listed in content and audience building, by published members
Check the Course score: 85; B+, strong
Niche: Content and audience building; 1,308 listed here
Created: 31 Oct 2024; Skool publishes this date
Readings: 10; since 5 Sept 2026

About PTBI

Members work through course material in the Classroom, starting with lesson 1 of PTBI 2.0, and join daily group coaching calls listed on the Calendar.^[1] Each new member is contacted by a 1-1 coach to book an onboarding call, is added to an Instagram group chat, and can post questions for coaches and students.^[1] The program is organised around what it calls 5 pillars of business; one, Lead Gen, covers social media marketing and content for getting clients.^[3] PTBI's own website also lists 1-1 mentorship and unlimited support, and partnerships with MyCoach AI for online training and AR Funnels for lead management software.^[3]

Its flagship program, PTBI Takeover, is presented as a way for coaches to increase their capacity for online growth.^[2]

Sources

Skool listing: skool.com/ptbi, as collected 28 Sept 2026
Official website: personaltrainersbusinessincubator.com/what-is-ptbi-1, retrieved 29 Sept 2026
Official website: personaltrainersbusinessincubator.com, retrieved 29 Sept 2026

Compiled by Check the Course from the sources listed, to the best of our ability.

What the listing describes

NicheContent and audience buildingFormatMentorship or coachingIncludesOne to one

Read from the listing’s own words: what is offered, never how well.

What is inside

Course modules

341

Courses

Posts, all time

365

People running it

Counts published by PTBI on its own page, read on 31 Oct 2026: how much is included, never how good it is. Listed as run by zakk-colburn-2101.

How we knowSourced & dated

Observed on 31 Oct 2026 from Skool source page archived copy 0919ab74a23e.

Observable monthly ceiling

monthly price

872

published members

theoretical ceiling per month

This community is published as free, so the figure is zero. Its members are an audience, not customers. Nothing here estimates what that audience might be worth, and no price is applied to it anywhere on this site.

Against the content and audience building niche

Percentile among the other 1,307 content and audience building listings here, each seller counted once for size.

Size65th

smallestlargest

Check the Course Score

85B+Strong

Ahead of 85% of the 13,594 Skool communities we track, including ones without a page here, on the measures below, each read from a figure PTBI published itself.

Size 53% of the scoreahead of 79%
Growth 27% of the scoreahead of 55%
Track record 20% of the scoreahead of 73%

An algorithmic position among tracked listings: not an endorsement, a guarantee or advice. How the score works.

Run this community?

Add this badge to your site

It links to this page and shows the date it was measured.

Style

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Top 25% by size on Skool. Measured by Check the Course.

Where it goes

Website (HTML)Skool or Whop (link)

<a href="https://checkthecourse.com/communities/skool-ptbi"><img src="https://checkthecourse.com/badge/skool-ptbi?kind=size" alt="Top 25% by size on Skool. Measured by Check the Course." width="360" height="76" loading="lazy"></a>

Paste it into any page that accepts HTML. The badge keeps itself up to date.

Evidence and signals

Listed on 872 members.

Evidence: measured.

First recorded: 5 September 2026our first reading, not its launch

Tracked over time

Member change

+3+0.3%over 4 days+15+1.8%over 28 days

Price change

Unchanged at all 6 readings with a price

10 observations over 56 days.

Member count

Observation log

Observation log
Observed	Members	Change	Price	Ceiling / month
31 Oct 2026	872	+3	Free to join	Not calculated
27 Oct 2026	869	+2	Free to join	Not calculated
23 Oct 2026	867	+2	Free to join	Not calculated
19 Oct 2026	865	+1	Free to join	Not calculated
15 Oct 2026	864	+3	Free to join	Not calculated
11 Oct 2026	861	+2	Free to join	Not calculated
7 Oct 2026	859	+2	Not recorded	Not calculated
3 Oct 2026	857	+1	Not recorded	Not calculated
28 Sept 2026	856	+17	Not recorded	Not calculated
5 Sept 2026	839		Not recorded	Not calculated
Average per week, last 28 days3 Oct 2026 to 31 Oct 2026		+4
Average per week, since first reading5 Sept 2026 to 31 Oct 2026		+4

Course content readings

Course content readings
Observed	Posts	Modules	Courses
31 Oct 2026	365+1	341+2	8
23 Oct 2026	364+2	339	8
15 Oct 2026	362	339-1	8
11 Oct 2026	362	340+1	8
3 Oct 2026	362+2	339+1	8
12 Sept 2026	360	338	8
Added per week12 Sept 2026 to 31 Oct 2026	+0.7	+0.4	0

Common questions about PTBI

What is PTBI?: PTBI, short for The Personal Trainers Business Incubator, is the Skool member area of a coaching program that helps personal trainers move from gym-based training to online coaching businesses.
How much does PTBI cost?: PTBI is free to join on Skool; its listing shows no charge, read 31 Oct 2026.
How many members does PTBI have?: PTBI lists 872 members, read 31 Oct 2026.
How has PTBI's membership changed?: From 839 members on 5 Sept 2026, our first reading, to 872 on 31 Oct 2026: up 33, or 4%.
How does PTBI compare with other content and audience building communities?: PTBI is free to join, where the median priced content and audience building listing charges $27 a month. The niche median is 541 members. Pricing benchmarks by niche.
What do you get inside PTBI?: PTBI publishes 341 course modules, 8 courses, 365 posts, 13 admins. Communities with the most course content.