Lets Burn vs One Rep Max
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lets Burn
Discover and book fitness classes at various studios with a single membership. Explore diverse activities like yoga, boxing, and CrossFit, and join a supportive community led by experienced trainers to kickstart a healthy lifestyle.
- Access to best fitness studios
- One membership for all classes
- Explore and book diverse fitness activities
- Filter by location, activity, and time
- Organize workout schedule
- Join a vibrant fitness community
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Burn gives you access to the best fitness studios around you, with one membership. Explore, discover and book for the fitness classes you've always wanted to try, at the time, you've always wanted to have. Whether it's yoga, boxing, spinning, crossfit, functional training, you can find it, and more. Not only will you enjoy the workout, you will also become a part of a vibrant community that's fun, helpful and full of energy. Experienced trainers in their field will help you take the necessary steps towards a healthy lifestyle- in and outside of the studio. You will translate the "surge", "switch", "click" of your reservation, into the motivation you need to lead an active life. How it works: ⁃ Register on the application ⁃ Find the perfect workout for YOU on our explore page - Add the number of credits that suit you to your Burn account - Start joining fitness classes at all the gyms around you. ⁃ Filter the classes based on location, activity, and time YOU want ⁃ Organize your workout schedule at all the gyms, under one account.
One Rep Max
Easily calculate your One Rep Max (1RM) for various strength exercises. Track your progress over time with saved calculations, view personalized percentages, and visualize your strength gains through charts. Supports multiple exercise types and custom units.
- Calculate One Rep Max
- Save and track progress
- View 1RM percentages
- Log multiple exercise types
- Create custom exercises
- View strength gain charts
- Imperial or Metric units
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Calculate your One Rep Max from 2-12 max effort performed reps. Features: - Quickly & easily calculate your One Rep Max - Save calculations to track progress - View your 1RM percentages e.g. "70% one rep max" - Log multiple exercise types (Deadlift, benchpress, front squat etc.) - Create & add your own exercise types - View max weight history by exercise type - View charts showing your strength gains over time - Select a custom date when adding entries - Choose Imperial or Metric units
Screenshots
Verdict
The clearest difference is rating: One Rep Max at 5.0 against Lets Burn's 4.2. One Rep Max also leads on review sentiment (33% vs 0%) and update cadence (every 10 days vs every 2 months). Lets Burn's advantage is in-app purchases (none vs 1) and ratings volume (13 vs 1). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. One Rep Max sells 1 one-off in-app purchase. Lets Burn asks for nothing beyond the download.
One Rep Max holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Lets Burn has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Lets Burn's written reviews are positive against 33% of One Rep Max's.
Lets Burn ships an update every 2 months, One Rep Max every 10 days. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.
| Parameter | Lets Burn | One Rep Max |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (13 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 13 — better | 1 |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 88 MB | 13 MB |
| Age rating | 4+ | 17+ |
| Developer | P5M Co. | App Ktchn Ltd |
Customer experience
Lets Burn
One Rep Max
In-app purchases
Lets Burn
No in-app purchases
One Rep Max
- 1RM Pro Lifetime$4.99
