Kinesiology graduate and YouTube fitness educator who founded Built With Science in 2018; sells the BWS+ training and nutrition app, custom workout and meal plans, a cookbook and 2-on-1 coaching.
Jeremy Ethier is a fitness content creator and the founder and CEO of Built With Science, a company that publishes research-based training and nutrition content. According to his author page on builtwithscience.com, he holds a Bachelor of Science specializing in Kinesiology and certifications from NASM (personal trainer), FMS (Functional Movement Systems) and PPSC. His company's About page says he started Built With Science in 2018 and launched his YouTube channel as part of that project. His date of birth and the university that granted his degree are not stated on his official pages.
The business is operated through Built With Science Holdings Corp. and Built With Science, Inc., the entities named in the site's legal disclaimer; Built With Science Holdings Corp. is also the developer listed for the BWS+ app on Apple's App Store. The site's Terms of Use are governed by the laws of British Columbia, Canada, with arbitration in Vancouver. The About page says the team has grown to more than 20 coaches, dietitians and researchers.
His main channel is YouTube (@JeremyEthier), with 7.92 million subscribers read on September 14, 2026. He also links an Instagram account (@jeremyethier) from his website. A TikTok account named jeremyethier shows 735,800 followers, but it is not linked from his website, so that figure is not counted here. His videos cover exercise selection, hypertrophy and fat loss and cite published studies; he has also appeared in collaborations with researchers such as Dr. Milo Wolf. BarBend reported in August 2024 that he planned to partner with the University of British Columbia to fund and take part in a study on training muscles in the stretched position.
What he sells, as listed on builtwithscience.com and the App Store on September 14, 2026: the BWS+ app (workout programs, nutrition tracking, exercise tutorials and an AI assistant modeled after him), priced on the US App Store at $29.99 per month or $189 per year, with individual program unlocks at $49; a Custom Workout Plan at $209, a 12-week plan delivered in 5-7 business days and listed as non-refundable; a Custom Meal Plan at $157 prepared by the company's dietitians; the Fat Loss Cookbook, a PDF with more than 90 recipes, at $79; and 2-on-1 Coaching with a coach and a registered dietitian, which has no published price and starts with an application and a discovery call. The workout plan page also mentions a 3-on-1 coaching option for people under 18 or with chronic conditions, also without a public price. The company also sells protein powder and resistance bands, which are not training products and are not listed here.
The About page states that more than 100,000 people have joined Built With Science programs; this is the company's own figure and no independent source for it was found. The site's disclaimer states that Jeremy Ethier is not a medical doctor or registered dietitian and that testimonials show exceptional results. No FTC action under his name or Built With Science was found in a search restricted to ftc.gov, and nothing was found on the Canadian Competition Bureau site (competitionbureau.gc.ca), both searched on September 14, 2026. Criticism of his bulking advice has been published on the blog of a competing fitness program, Bony to Beastly, which is not independent press; no press coverage, court case or regulatory decision about him was found in these searches.
Objective facts about their offer, taken from public sources. We don't rate the quality of the programs or the results you may get.
One without a public price
5 official channels
Massive audience
Facts checked on Sep 15, 2026.
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| Program | Type | Published price | Link |
|---|---|---|---|
| BWS+ (Built With Science+) app Subscription app with workout programs, nutrition tracking, 250+ exercise tutorials, an AI meal scanner and an AI assistant modeled after Jeremy Ethier. $29.99 per month or $189 per year on the US App Store; individual programs can be unlocked for $49 each. | Other | $30 Checked Sep 15, 2026 | View |
| Custom Workout Plan 12-week workout plan built from a fitness questionnaire and delivered in 5-7 business days, with a nutrition guide, goal-setting guide, mobility routine and a progress review call. One-time payment, listed as non-refundable. | Other | $209 Checked Sep 15, 2026 | View |
| Custom Meal Plan Diet plan prepared by the company's registered dietitians from the buyer's stats and food preferences, with a 30-day overview, three rotating menus, meal prep videos and a supplement guide. Free revisions within 72 hours; no refunds once the questionnaire is completed. | Other | $157 Checked Sep 15, 2026 | View |
| Fat Loss Cookbook PDF cookbook by Jeremy Ethier with 90+ high-protein recipes linked to MyFitnessPal, plus a full-day meal plan and a shopping guide as bonuses. | Book | $79 Checked Sep 15, 2026 | View |
| 2-on-1 Coaching Ongoing coaching with a certified coach and a registered dietitian: personalized training and nutrition plans, form checks, unlimited messaging, a coaching app and monthly group calls. No public price; enrollment starts with an application and a discovery call. | Mentorship | Not published Checked Sep 15, 2026 | View |
Prices are those published by the mentor on the date checked and may change. “Not published” means we couldn't find a public price.
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He is the founder and CEO of Built With Science, a fitness company he started in 2018, and runs the YouTube channel @JeremyEthier (7.92 million subscribers on September 14, 2026). His official author page lists a Bachelor of Science in Kinesiology and NASM, FMS and PPSC certifications. The company's terms of use are governed by British Columbia law, with Vancouver as the place of arbitration.
The US App Store listing for BWS+ (Built With Science+) showed $29.99 per month or $189 per year on September 14, 2026, plus optional program unlocks at $49 each. The developer is Built With Science Holdings Corp.
On builtwithscience.com the Custom Workout Plan costs $209 (12 weeks, non-refundable) and the Custom Meal Plan costs $157. The 2-on-1 Coaching program with a coach and a registered dietitian has no public price: you apply and book a discovery call with an enrollment specialist first.
What can be checked: his credentials are listed on his own site (Kinesiology degree, NASM, FMS and PPSC), the app is published on the App Store by his holding company, and BarBend reported in 2024 on his plan to fund a stretched-position training study with the University of British Columbia. His claim that over 100,000 people have joined his programs comes from his own About page. Searches of ftc.gov and competitionbureau.gc.ca on September 14, 2026 returned nothing under his name or his company's.
Independent material is thin. The App Store shows an average of 4.8 out of 5 from about 3,700 ratings for BWS+, which are user ratings rather than verified reviews. The most visible critique of his bulking advice comes from Bony to Beastly, a competing fitness business, not from independent press. No court case or regulatory decision involving him was found in the searches described on this page.
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