Courtney Black: Trainer to 300K-User Fitness App

Courtney Black turned a personal training career into a multimillion-pound software business by building the Courtney Black Fitness app, a subscription platform now used by more than 300,000 people. She launched it two weeks before the UK went into lockdown, funded it with every penny of her savings, and came out the other side running a real company instead of chasing the next brand deal. That is the difference between a fitness creator and a founder. One sells their attention. The other owns a product that sells while they sleep. Key Takeaways:

Courtney Black launched her fitness app in 2020, two weeks before the first UK lockdown, using her entire savings
The app has been used by more than 300,000 people and holds a 4.7-star rating on the App Store
She charges £15.99 per month or £119.99 per year, turning workout content into recurring revenue
Her estimated net worth sits around $5 million, built from a business she owns outright
She grew the app off the back of free Instagram live workouts, not a single viral moment

Who Is Courtney Black?

Courtney Black is a British fitness trainer, author, and app founder from East London with more than 800,000 followers on Instagram and another 161,000 on TikTok. She built her audience on high-energy home workouts and blunt, no-nonsense advice about training and nutrition. Her origin is not a highlight reel. Black has been open about recovering from an eating disorder and years of restrictive dieting that left her dangerously underweight. She started coaching to help other women train in a way that was sustainable instead of punishing. That honesty became her brand, and it is why her audience trusts her enough to pay. She is also a two-time Sunday Times bestselling author, with recipe books like Fit Foods and Fakeaways and the pocket-sized The Pocket PT. But the books are a byproduct. The engine of her business is software.

How Did Courtney Black Build Her Fitness App?

She bet everything on it before she knew it would work. Companies House records show Courtney Black App Ltd was incorporated on 12 February 2020, and Black has said she launched the product with her entire savings just two weeks before the country shut down. The app was originally designed for the gym. Then gyms closed. Instead of waiting it out, Black started running free live workout sessions on Instagram, sometimes pulling tens of thousands of people into a single session. Those free workouts did the marketing. The app did the monetizing. People who trained with her for free every morning had an obvious next step: a paid app with structured programs, meal plans, and progress tracking. What is a creator subscription app? It's a mobile product a creator owns that charges a recurring fee for access to their content, tools, and community, turning an audience into monthly revenue instead of one-time sales. That model is why fitness keeps producing app winners. We broke down the pattern in why fitness creators dominate the app economy, and Black is a textbook case: daily habit, visible results, a reason to open the app every single day.

Your audience is a business.

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How Much Does the Courtney Black App Cost?

The app is free to download and runs on a hard paywall: you subscribe before you get access. In the UK it costs £15.99 per month or £119.99 for a year paid upfront, with a 14-day free trial. In the US the App Store lists monthly plans around $19.99 and an annual plan near $129.99. Do the math on what that unlocks. A few thousand paying members at £15.99 a month is a seven-figure revenue line that renews every month, whether or not she posts that day.

Metric	Courtney Black App
Launched	2020 (two weeks before lockdown)
People who've used it	300,000+
App Store rating	4.7 stars
Monthly price (UK)	£15.99
Annual price (UK)	£119.99
Free trial	14 days

A brand deal pays once. A book earns a royalty and then goes quiet. An app charges again on the same day next month. Black's estimated $5 million net worth did not come from sponsorships. It came from owning the checkout.

Why Does the App Beat Brand Deals?

Because she owns it. When Black takes a brand deal, she rents her audience to someone else for a day and the money stops when the post stops. When someone subscribes to her app, she owns that relationship, the payment, and the data behind it. This is the shift we push every creator to see. A creator's income resets to zero the month they stop posting. A founder's business earns while they sleep. Black crossed that line the day her app started billing on autopilot. If you want the raw numbers behind the tradeoff, our guide on turning a coaching business into an app walks through the exact economics of moving from one-to-one sessions to recurring subscriptions. She is in good company. Fellow British fitness founder Grace Beverley built two companies from her Oxford dorm room, including the Shreddy app, and even hosted Black on her business podcast under the title "From Personal Trainer To Multi-Millionaire." Different creators, same playbook: build the product, own the revenue.

What Can Other Creators Learn From Courtney Black?

Start before you feel ready, and build the thing you own. Black did not wait for a perfect market. She launched into a pandemic with her savings and adapted the product to reality within weeks. Three lessons stand out for any creator sitting on an engaged audience:

Free content is the funnel, the app is the business. Her free Instagram lives were not the product. They were the ad for the product.
You don't need a huge following, you need a paying one. A focused audience of buyers beats a massive audience of passive scrollers. We made that case in 5 fitness creators who built million-dollar apps.
Own the platform. Books, brand deals, and sponsorships are rented income. An app is an asset you can grow, sell, or run for decades.

Here is the uncomfortable part. Black is not a developer. She had expertise, an audience, and the nerve to turn both into software. Most creators have the first two. What stops them is the assumption that building an app takes a year and a fortune. It doesn't. That's the gap our model was built to close.

Courtney Black built it. Your turn.

You already have the audience and the expertise. We build the app, ship it in three weeks, and run it forever. $0 upfront.

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Brand Deal vs Owned App: The Real Comparison

Income Source	How It Pays	Who Owns It	Scales?
Brand deal	Once, per post	The brand	No
Book	Royalty, then flat	The publisher	Barely
Subscription app	Every month, on repeat	The creator	Yes

Black stacked all three, but only one renews on its own and grows into a company she controls. That's the one worth building first. Want to turn your expertise into an app? We build custom apps for creators, $0 upfront, three-week delivery, and we handle all the tech forever.

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Frequently Asked Questions

How much does the Courtney Black app cost?

The Courtney Black Fitness app is free to download and requires a subscription. In the UK it costs £15.99 per month or £119.99 per year, with a 14-day free trial. US App Store pricing is around $19.99 monthly and $129.99 annually.

How many people use the Courtney Black app?

The app has been used by more than 300,000 people since it launched in 2020 and holds a 4.7-star rating on the App Store.

What is Courtney Black's net worth?

Her net worth is estimated at around $5 million, built primarily from her subscription fitness app rather than sponsorships or brand deals.

Do creators need coding skills to launch an app like this?

No. Courtney Black is a trainer, not a developer. A creator supplies the audience and expertise; a product partner handles design, development, App Store submission, and ongoing updates.

How long does it take to build a creator app?

Most agencies take six to twelve months. Built by Foundry ships in three weeks and runs the app for you afterward, with no upfront cost.