1RM Calculator vs Balrog Strength Systems
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
1RM Calculator
Easily calculate your one-rep max (1RM) strength with this app. It supports RPE input and allows you to estimate rep maxes based on your 1RM. Track your progress by saving your 1RM history for different exercises.
- 1RM calculation with RPE
- Rep max estimation
- Save 1RM history
- Customizable exercises
- Dark theme
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An easy-to-use 1RM calculation app that lets you use RPE and track your 1RM history. The core functionalities include: - 1RM calculation with RPE (optional). - Rep maxes estimation from 2 to 12 reps, according to your estimated 1RM. - Saving 1RM history by exercise. - Customized exercise selection. - Dark theme available. Terms & Conditions https://1rm-calculator.netlify.app/legal/terms/
Balrog Strength Systems
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Train smarter with Balrog Strength Systems. Get personalized workout plans, track your progress, and stay connected with your coach.
Screenshots
Verdict
The clearest difference is in-app purchases: Balrog Strength Systems at none against 1RM Calculator's 3. Balrog Strength Systems also leads on update cadence (every 2 weeks vs every 4 months). 1RM Calculator's advantage is iOS requirement (13.0 vs 15.1). 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. 1RM Calculator sells 3 in-app purchases, starting at $1.99 per month. Balrog Strength Systems asks for nothing beyond the download.
1RM Calculator ships an update every 4 months, Balrog Strength Systems every 2 weeks. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.
| Parameter | 1RM Calculator | Balrog Strength Systems |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (109 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 109 — better | — |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 32 MB | 74 MB |
| Age rating | 4+ | 17+ |
| Developer | Yuri Koshiishi | Training Point LLC |
In-app purchases
1RM Calculator
- 1 Rep Max Pro Monthly$1.991 Month
- 1 Rep Max Pro Annual$9.991 Year
- 1 Rep Max Pro Lifetime$29.99
Balrog Strength Systems
No in-app purchases
Questions
Is 1RM Calculator free?
Is Balrog Strength Systems free?
Do 1RM Calculator or Balrog Strength Systems have ads?
Which is updated more often, 1RM Calculator or Balrog Strength Systems?
Other comparisons
