What makes Centr popular
Centr, co-founded by Chris Hemsworth, built its following by packaging structured workouts, meal planning, and mindfulness content inside a single polished app. For someone who wants a complete lifestyle platform with professional production values, the appeal is obvious.
- Guided workout programs. Centr's programs are led by trainers and athletes across strength, HIIT, yoga, and more — the thinking's done for you, which suits beginners and intermediates well.
- Meal planning and nutrition. Built-in meal plans and recipes designed around the training programs are one of Centr's clearest differentiators.
- Lifestyle and mindfulness content. Sleep, meditation, and recovery content extend Centr beyond training into a broader wellness platform.
- High production quality. The video workouts, photography, and app design reflect genuine investment in the product.
- Cross-platform access. iOS and Android, consistent across devices.
The subscription cost reality
Centr runs on a paid subscription. Exact pricing — monthly, annual, promotional — changes over time and varies by region, so check Centr's own pricing page rather than any third-party quote. This article deliberately doesn't state a number.
The structure is what matters: Centr isn't free, there's no meaningful free tier for regular use, and access to everything — workouts, meal plans, content library — requires an active subscription. Let it lapse and access goes with it.
If you primarily want to track strength training and follow a progressive overload program — not the lifestyle content, meals, or video-led HIIT — a full subscription is a significant cost for a fraction of the value.
That's the gap SammaGym fills. For a broader look at free options, see the best free workout apps roundup.
What SammaGym covers for free
SammaGym is a training-focused tool. No meal plans, no mindfulness content, no celebrity-led video workouts. What it does have is a complete system for structured strength training — free, no subscription, no ads.
- Auto-generated program. SammaGym builds a personalised training program from your goals, available equipment, and experience level. You don't design a split or hunt for a template.
- Previous set shown inline. During a session, the weight and reps you logged last time appear in grey under each active set — your target is always right there, no scrolling through history.
- Auto-regulated progression. After each session, SammaGym suggests whether to add reps, increase weight, or hold steady, using double progression combined with reps-in-reserve (RIR) feedback.
- Fast logging. Weight, reps, and RIR on one screen. Rest timer runs automatically in the background.
- Rest timer on the lock screen. The countdown stays visible without unlocking your phone between sets.
- PRs and volume charts. Personal records flagged automatically. Volume trends by muscle group charted over time.
- Offline-first. Everything works without a connection. Data lives locally on your device and syncs when you're back online.
- Progressive Web App. Install SammaGym from your browser at app.sammagym.com and it behaves like a native app — home screen icon, offline mode, lock-screen timer. Native iOS and Android apps are coming soon.
Side-by-side comparison
The table below covers the dimensions that matter most when evaluating a free alternative. Centr details reflect publicly available information — verify on Centr's site for current specifics.
Auto-generated program: how it works
One big reason people choose Centr is that it removes the decision-making from training. Open the app, know what to do. SammaGym takes the same approach — but from an evidence-based strength angle rather than a celebrity-curated content angle.
During setup, SammaGym generates a personalised program built around your goals (hypertrophy, strength, or both), training days per week, and available equipment. The methodology draws from established research: the MEV/MAV volume landmark framework from Dr. Mike Israetel and the autoregulated double progression approach associated with Jeff Nippard's evidence-based programming work.
In practice: the app tells you what to lift, in what rep range, and with what weight. After each set you rate your reps-in-reserve — how many more you could've done before failure. SammaGym uses that to adjust the next session's target. Easy set? Progression gets more aggressive. Grinding near failure? It tells you to hold weight and clean up technique first.
For a deeper look at how SammaGym selects exercises and structures progression, see the guide to apps that build your workout program for you.
Who should stay on Centr
A fair comparison means being straight about when switching doesn't make sense.
- Meal plans are central to your routine. If you actively use Centr's nutrition and recipe features alongside training, SammaGym doesn't replace that. A free alternative to the full Centr lifestyle package doesn't exist in a single app.
- You prefer video-led classes. Centr's guided video workouts with on-screen coaching suit people who'd rather follow along than self-direct. SammaGym is a tracker, not a class platform.
- You value the mindfulness and recovery content. Sleep, meditation, and lifestyle guidance in one place is a genuine Centr strength — SammaGym simply doesn't address it.
- Centr's community and brand motivation works for you. If the association with high-profile trainers keeps you consistent, that's real value. Factor it in honestly.
How to get started with SammaGym
Setup takes a few minutes. No account required to start logging.
- 1Open app.sammagym.com in your phone browser. On iPhone, tap the share icon and choose 'Add to Home Screen'. On Android, tap the browser menu and choose 'Add to Home Screen' or 'Install App'.
- 2Complete onboarding — training goal, days per week, available equipment. SammaGym generates your program immediately.
- 3Start your first session. Log weight, reps, and RIR for each set. Last session's numbers appear in grey inline as you go.
- 4After the session, check the progression suggestions. The app tells you exactly what to target next time for each exercise.
- 5After two to three weeks, check your volume charts to see which muscle groups are progressing and which need attention.
If you're weighing several free options before deciding, the best free workout apps guide covers a broader set with the same honest methodology used here.
Sources
- Israetel M., Hoffman J., Smith C. — Scientific Principles of Strength Training, Renaissance Periodization, 2015.
- Nippard J. — The Fundamentals Hypertrophy Program, Jeff Nippard Fitness, 2021.
- Schoenfeld B.J. — The Mechanisms of Muscle Hypertrophy and Their Application to Resistance Training, Journal of Strength and Conditioning Research, 2010.
- American College of Sports Medicine — ACSM's Guidelines for Exercise Testing and Prescription, 11th edition, 2021.
- Helms E., Morgan A., Valdez A. — The Muscle and Strength Pyramids: Training, 2nd edition, 2019.
