GymStreak: Revenue, team and how it was built
GymStreak (Personal-trainer app that writes workout plans, United Kingdom): About US$2.5M in revenue, 2022. Evidence grade D: reported, not verified. Team: 1 founder, no employees, 4 contractors in July 2023. Launched March 2018; still running.Added 27 October 2026
- Outcome
- About US$2.5M in revenue, 2022
- Evidence
- D reported, not verified
- Launch
- March 2018
- Status
- Still running
- Team
- 1 founder, no employees, 4 contractors in July 2023
- Outside funding
- None
- Main channel
- Paid ads
What is not verified
The headline figure, about US$2.5 million of revenue in 2022, and the US$300,000 of 2021 rest on one source: Joseph Mambwe's member profile on the Hampton blog, dated 5 July 2023. eBiz Facts (20 July 2023) repeats the same interview and is not a second source. No payment-processor profile, App Store revenue statement or company accounts with turnover were found. GymStreak Ltd files total exemption full accounts at Companies House, but the documents are served from a host whose robots.txt could not be read, so they were not opened. A reader could look for a RevenueCat or TrustMRR profile, the company's filed accounts for the year to 31 March 2023, or a later interview with a dated figure. The headline number is grade D: one claim or one estimate, with no second source. Aiolum shows it because the story is useful, and marks it so that it is not mistaken for a verified figure.
GymStreak is a fitness app for iPhone, Apple Watch and Android that writes a gym or home workout plan, a list of which exercises to do on which day with how many sets and repetitions, from the user's goal, training days, session length and equipment. It then logs every set. By November 2024 it also counted calories from food photos, and in 2026 it has a chat coach named Spot that edits the plan. It is free to download; logging workouts, the coach and food search need an in-app subscription, a recurring payment that Apple or Google collects inside the app. Each exercise has a 3D demo. The founder first animated them by hand and later with motion capture, a recording of a real trainer's movements in a suit with sensors.
Joseph Mambwe studied engineering at the University of Cambridge, where he had the idea, and first sold a simple paid GymStreak app. GymStreak Ltd was registered in England on 9 March 2018 to build a fuller version. He told the founder community Hampton in a profile dated 5 July 2023 that the app made about US$300,000 in 2021 and about US$2.5 million in 2022, with no employees and four contractors, and that 2023 would be about the same. He said that Facebook and TikTok ads brought most users and paid for themselves on the same day: a return on ad spend, revenue divided by the cost of the ads, of about 1.5 on the day of the spend.
The revenue figures rest on that one interview, so this page grades them D: reported, not verified. There is a second open question. In the 2023 interview the founder talks about 3D animation and augmented reality, which places a 3D model in the camera view of the room, and does not use the word AI. But the company's own website was titled "GymStreak AI" in October 2022, and the App Store listing of May 2022 described a trainer that creates plans automatically. This page treats that plan generator as the product's AI, as the company did; no source says how it worked.
How much revenue does GymStreak make?
Each row shows the evidence grade and the source numbers from the list at the end of this page. The grades are explained in How Aiolum verifies.
| Fact | Value | Grade | How we know | Sources |
|---|---|---|---|---|
| Revenue in 2022 | about US$2.5 million | D | The founder in his Hampton profile, 5 July 2023: "in 2022 we did ~$2.5 million". eBiz Facts repeated it on 20 July 2023 from the same interview, so it is not a second source. This is the headline figure. | [1, 2] |
| Revenue in 2021 | about US$300,000 | D | Same interview: "in 2021 we did ~$300k in revenue". He also says that in 2021 growth stopped at "the $300k ARR mark". | [1] |
| Growth from 2021 to 2022 | about 8.3 times | calc | Calculated: US$2.5 million divided by US$300,000. The founder and the Hampton introduction round it to about 10 times. | [1] |
| Average revenue per month in 2022 | about US$208,000 | calc | Calculated: US$2.5 million divided by 12. No source states a monthly figure. | [1] |
| Revenue expected for 2023 | "about the same, maybe slightly less" than 2022 | D | The founder, July 2023. He said he had slowed growth by choice, for family time and to improve download-to-trial, trial-to-paid and churn rates. No later revenue figure was found. | [1] |
| Return on ad spend on the day of the spend | about 1.5 | D | The founder, July 2023: for US$100 of ads he gets about US$150 of new revenue the same day, before renewals and trial conversions. At the highest spend he broke even on day 3 or day 7, when trials pay out. | [1] |
| Team, July 2023 | the founder, no employees, 4 contractors | D | The founder: contractors for customer support, blog writing, ad creatives and performance marketing, and "everything else I do myself". | [1] |
| Outside funding | none | D | The founder: "GymStreak is completely bootstrapped". | [1] |
| Company | GymStreak Ltd, England, company number 11245600, incorporated 9 March 2018 | A | Companies House register, read 27 October 2026: active, nature of business 62012 (business and domestic software development), accounts filed every year up to 31 March 2025 as total exemption full accounts. The register page shows no turnover. | [13] |
| The company's description of the app, October 2022 | "GymStreak AI | Intelligent Gym Trainer" | C | Title of gymstreak.com in the Internet Archive copy of 4 October 2022, with "Automatically created intelligent workout plan based on your body type, goals and experience." The same page still showed an early beta sign-up form. In April 2023 the title was "Gym Streak AI - Workout Planner App". | [3, 14] |
| App Store name and description, May 2022 | "GymStreak: Gym Workout Plans", with an "Automatic Workout Trainer" | B | Internet Archive copy of the US listing, 25 May 2022. It describes a personal trainer "that has learnt from training hundreds of thousands of people" and automatic periodization of weights and reps. The word AI does not appear. Rating 4.5 from 3.9K ratings, age rating 4+. | [4] |
| App Store name, November 2024 | "GymStreak: AI Personal Trainer" | B | Internet Archive copy of 22 November 2024: "AI Powered Workouts" and "AI Powered Food Tracking: Snap a pic, let AI count those macros". Rating 4.7 from 15.3K ratings. The archive's index also holds the listing under the names gymstreak-gym-workout-plans (May 2022) and gymstreak-gym-log-workouts (July 2022). | [6, 5] |
| US App Store rating, October 2026 | 4.7 from 16K ratings | B | Apple's US listing, read 27 October 2026. Age rating 9+, category Health & Fitness, seller GymStreak Ltd. The company's home page gives 4.7 from 74k ratings worldwide, checked by the company on 29 September 2026; the worldwide figure was not checked here. | [7, 8] |
| In-app purchases listed, October 2026 | 10 items from US$9.99 to US$100.99 | B | Apple's US listing. No period is given for any item. | [7] |
| Time from the company's registration to the end of 2022 | 57 months | calc | Calculated: March 2018 to December 2022. The first, simpler GymStreak app is older: gymstreak.com is in the Internet Archive from 15 April 2013. | [13, 15] |
How to read this table: a grade D value is a statement by the founder in a single interview, with no second source. A grade C value is read from the company's own current or archived pages. A grade B value is published by Apple or recorded by the Internet Archive. A grade A value is from the UK company register. A "calc" value was computed on this page from the rows named in its note.
| Plan | Per month, billed yearly (US$) | Per month, billed monthly (US$) | Limit |
|---|---|---|---|
| GymStreak Premium | listed at US$13.49, US$19.99, US$21.49, US$29.99 and US$100.99; period not shown | ||
| GymStreak Plan | listed at US$59.99 and US$76.99; period not shown | ||
| GymStreak Premium Plan | US$9.99; period not shown | ||
| GymStreak Forever Plan | US$22.99; period not shown | ||
| Workout Planner & Calorie Logs | US$100.99; period not shown | ||
| Download | 0 | 0 | setup questions, plan preview, exercise library and body tracking |
The app is free to download. Without a subscription a user can answer the setup questions, see the plan, browse the exercise library and track body weight; starting and logging workouts, the AI coach and food logging need GymStreak Premium, billed by Apple or Google. Apple's listing shows ten in-app purchases and no period for any of them, and several share a name at different prices, which may mean that the developer tests prices. The company's pages say only that the app shows the local price and any free trial before payment, so the price that a new user sees is not known.
When did GymStreak launch, and how did it grow?
From a simple paid exercise catalog to an app with an AI coach, by way of a rebuild in 2021 that the founder says multiplied revenue. Each entry carries its grade.
- 15 April 2013DEarliest Internet Archive copy of gymstreak.com. The founder says a simple paid version, a catalog of exercises with 2D images, lived on the App Store for years among other apps of his first company. [15, 1]
- 9 March 2018AGymStreak Ltd is registered in England. The founder says he spun GymStreak out into its own company that year and started animating every exercise in 3D, with an engine ready for augmented reality. [13, 1]
- 2020DGyms close during COVID-19. Within days he ships home workouts and changes all ads to "gym quality home workouts", the founder says. [1]
- 2021DGrowth stops at about US$300,000 a year and churn is high, by the founder's account. He studies the flows and pricing of bigger apps for six months and rebuilds the product from scratch three times. [1]
- 25 May 2022BThe App Store listing, "GymStreak: Gym Workout Plans", offers an automatic workout trainer, equipment profiles, motion-captured exercises and automatic periodization. 4.5 stars from 3.9K ratings. [4]
- 4 October 2022CThe company's website is titled "GymStreak AI | Intelligent Gym Trainer". [3]
- 2022DAbout US$2.5 million of revenue, about 8 times 2021, the founder says. [1]
- 2 April 2023CThe website title is "Gym Streak AI - Workout Planner App" and adds nutrition tracking. [14]
- 5 July 2023DHampton profile: no employees, four contractors, about 1.5 times the ad spend back on day 0, and 2023 revenue expected to be about the same. He says he cut ad spend to work on retention. [1]
- 20 July 2023DeBiz Facts repeats the interview and calls GymStreak "a fitness app that uses AI to create personalized workout plans". [2]
- 22 November 2024BThe App Store listing is now "GymStreak: AI Personal Trainer", with AI workouts, AI food tracking from photos and version 6. 4.7 stars from 15.3K ratings. [6]
- May 2026BApp Store version notes mention the AI coach: "Improved AI coach reliability for workout edits, meal logging and food search" (version 6.3.10, 21 May). [7]
- October 2026CThe website presents Spot, the AI coach, and states that logging workouts, the coach and food search need Premium. 4.7 stars from 16K US ratings, age rating 9+. [8, 10, 7]
Why did GymStreak work?
Four causes, in the order they mattered. Each one is a reusable lesson.
Ads that pay back the same day
The founder said in July 2023 that "high creative production, onboarding, offers and smart pricing" returned the ad spend on the day it was spent: about US$150 of new revenue for every US$100 of ads, by his account, before any renewal. A business with no investors can only buy users this way if the money comes back fast.
A rebuild after the plateau
The founder said that revenue stopped at about US$300,000 a year in 2021 and that users were leaving. He did not add features; he copied the structure of the apps above him, rebuilt the product three times, and accepted that the metrics fell for the first weeks after the release.
The plan is the product
Most gym apps are logs that the user fills in. GymStreak writes the plan from a few answers, which is what a beginner does not know how to do. The company's own site compares it with the loggers Strong and Hevy on exactly this point.
Contractors, not employees
Four contractors handle support, the blog, ad creatives and performance marketing; the founder writes the code and designs the app. He says paid ads suit a solo developer because he controls how many new users arrive.
How it was built
These details come from the founder's July 2023 interview (grade D) and the company's App Store listings (grade B). [1, 6, 7]
- Flutter, a cross-platform framework, so that one code base serves iPhone and Android. The founder designed in code and used Sketch and Figma only for storyboards.
- Every exercise is a 3D animation in an engine that he added so that the app would be ready for augmented reality. The first animations were made by hand, later ones with motion capture of a personal trainer.
- Subscriptions run through RevenueCat, whose cohort view of realized lifetime value, the money a group of users who started on the same day has paid so far, showed him how much he could spend on ads.
- Contractors are hired through Upwork.
- Growth came from Facebook and TikTok ads. A blog and App Store optimization brought some traffic.
- By November 2024 the listing describes AI food tracking from photos, and by May 2026 a chat coach. No source names the AI models behind them.
Tools named in the sources
Each one opens its page in the Tools tab, with every story that uses it.
Who tried this before GymStreak, and why did they fail?
Four companies in the Loot Drop database tried to get people to exercise more, with pop-up classes, live coaching, smart clothing or a game, and failed. The values below are from that database and are not independently verified.
Fitmob
The promisePop-up fitness classes in many venues, with no gym membership.
Why it diedCoordinating classes and venue partners cost more than it brought in, and ClassPass grew faster with a wider network.
Charge Running
The promiseLive running classes with an audio coach and a community of runners.
Why it diedUsers wanted flexible times, not scheduled sessions, and apps with personal, on-demand coaching took its customers.
Enflux
The promiseClothing with sensors that tracks movement in 3D and corrects form in real time.
Why it diedThe hardware was costly to make and ship, and Fitbit and Apple kept adding features to their own wearables.
FitFu
The promiseA phone game that detected exercises with the phone's sensors and rewarded them.
Why it diedUsers left when the novelty was gone, the app had no strong way to make money, and Nike Training Club and Fitbit offered more.
The failed startups come from Loot Drop, a free database of dead startups, retold here in our own words. Loot Drop describes its entries as AI-assisted summaries of public sources, so these cards carry no evidence grade.
What changed
All four sold a way to make exercise less lonely or less boring: classes, live coaching, smart clothing or a game. Each needed money for venues, instructors, hardware or users, and each lost to larger companies. The Loot Drop record of Charge Running says that apps with personal, on-demand coaching took its users.
GymStreak sells the plan, not the session. A beginner answers a few questions and gets a program; there is no venue, no instructor on a schedule and no hardware to pay for. The founder said that his ads paid back on the day they ran, which is how, by his account, a business without investors could grow about eight times in one year. What did not change is the crowded market: the company's own site compares the app with Strong and Hevy, and both have many more US ratings.
Can one person copy GymStreak now?
The method, yes. The 2022 ad prices, maybe not.
The structure can be copied: a plan written for the user, a free preview of that plan, a subscription to use it, and paid ads measured by the day they pay back. What cannot be checked is whether ads still pay back that fast. The founder said in July 2023 that he had cut ad spend to work on retention, and that the real money is in renewals.
Where it is still open: Other activities where a beginner does not know what to do next and a written plan is the product: running, climbing, swimming, mobility routines, or cooking to a calorie target.
- 1Write the plan for the user from a few questions; do not hand a beginner an empty log.
- 2Show the plan before the paywall, then charge for using it.
- 3Measure ad payback by the day of the spend, with cohort data from your subscription tool, before you raise the budget.
- 4Use contractors for support, content and ad creatives, and keep the product and the code yourself.
What could go wrong for GymStreak?
The risks are the mirror image of the causes above.
What is not verified
The headline figure, about US$2.5 million of revenue in 2022, and the US$300,000 of 2021 rest on one source: Joseph Mambwe's member profile on the Hampton blog, dated 5 July 2023. eBiz Facts (20 July 2023) repeats the same interview and is not a second source. No payment-processor profile, App Store revenue statement or company accounts with turnover were found. GymStreak Ltd files total exemption full accounts at Companies House, but the documents are served from a host whose robots.txt could not be read, so they were not opened. A reader could look for a RevenueCat or TrustMRR profile, the company's filed accounts for the year to 31 March 2023, or a later interview with a dated figure.
Was the 2022 app an AI product?
In the July 2023 interview the founder describes 3D animation, augmented reality and automatic plans, and does not use the word AI. The company's site was titled "GymStreak AI | Intelligent Gym Trainer" in October 2022, and the App Store listing of May 2022 described an automatic trainer "that has learnt from training hundreds of thousands of people", without the word AI. No source says whether that plan generator was a trained model or hand-written rules. The AI food tracking (by November 2024) and the chat coach (by May 2026) came after the headline year.
Growth bought with ads
The founder said in July 2023 that Facebook and TikTok ads were the main channel and that he had cut spend that year to improve retention. Ad prices and platform rules can change the payback. No later figure shows what happened to revenue after 2023.
A page of exchanged links
The site's "Friends of GymStreak" page links, without a nofollow mark, to nine other apps, among them an Instagram Reels audio saver and an AI homework helper. The home page of one of them, Ruvix Labs, has an "Our Friends" list that links back to GymStreak. Google's spam policies name "Excessive link exchanges" and "partner pages exclusively for the sake of cross-linking" as link spam. No source shows that GymStreak's owner owns those apps. The footer also links to GymLevels, called "our RPG workout app", which was not reviewed for this page.
The source is a members' profile
Hampton calls itself a private founder community, and the interview is a profile of one of its members, mostly in his own words. It is not a journalist's report, and no one outside checked the numbers.
Ratings and prices
The home page says 4.7 from 74k ratings worldwide; Apple's US listing shows 4.7 from 16K. Apple lists ten in-app purchases from US$9.99 to US$100.99 with no period. A US review of 15 September 2026 complains that support is answered by AI and that the generated plans did not fit the reviewer's equipment; the developer replied and asked for details.
Sources
The grade next to each source is the best grade that the source can support. "Read in full" means that the text of the page was downloaded and the numbers were checked in it.
- D Hampton blog, 5 July 2023: Bootstrapping a $2.5 Million Per Year Fitness App with Zero EmployeesRead in full (downloaded 27 October 2026). A member profile written mostly in the founder's words. The only source for the revenue figures, the team, the ad payback, the rebuild and the tools.
- D eBiz Facts, 20 July 2023: $2.5 Million Per Year Fitness App with Zero EmployeesRead in full in the site's RSS feed (https://ebizfacts.com/feed/?paged=3, downloaded 27 October 2026). It restates the Hampton interview, so it is not an independent figure.
- C gymstreak.com, Internet Archive copy of 4 October 2022: GymStreak AI | Intelligent Gym TrainerRead in full. The company's own description of the app in the headline year.
- B App Store, GymStreak: Gym Workout Plans, Internet Archive copy of 25 May 2022Read the name, rating, age rating and description. The description is the developer's; the rating is Apple's.
- B Internet Archive index of App Store listing addresses starting apps.apple.com/us/app/gymstreakRead in full. Shows the names under which the listing id1371187280 was archived from 2022 to 2026.
- B App Store, GymStreak: AI Personal Trainer, Internet Archive copy of 22 November 2024Read the name, rating, description, version note and in-app purchases.
- B App Store, US: GymStreak: AI Personal Trainer, read 27 October 2026Read in full: rating, age rating, seller, version history, reviews and the in-app purchase list.
- C GymStreak home page, read 27 October 2026Read in full (downloaded 27 October 2026). Source for the free and Premium features, the worldwide rating claim and the comparison with Strong and Hevy. robots.txt allows ClaudeBot except /api/ and /admin/.
- C GymStreak: About, read 27 October 2026Read in full. Company name and what the free and paid versions include.
- C GymStreak: Spot, the AI coach, read 27 October 2026Read the description of the coach.
- C GymStreak: Friends of GymStreak, read 27 October 2026Read in full, including the link markup. Source for the list of linked apps.
- C Ruvix Labs home page, read 27 October 2026Read in full. Its "Our Friends" list links to GymStreak. robots.txt answered 404 (no rules).
- A Companies House: GYMSTREAK LTD, company 11245600Read the overview and the filing history. The accounts documents redirect to an Amazon S3 host whose robots.txt answered 403, so they were not opened.
- C gymstreak.com, Internet Archive copy of 2 April 2023: Gym Streak AI - Workout Planner AppRead in full. The copy of 1 September 2023 is the same.
- B Internet Archive index of gymstreak.com, first five copiesRead in full. The first copy is from 15 April 2013.
- C Google Search Central: Spam policies for Google web searchRead the section on link spam.
- C Loot Drop database export, 1,749 failed startupsLocal export. AI-written summaries, not independently verified. Source for the failed predecessors.