# One Rep Max vs 1

The clearest difference is price: One Rep Max at Free against 1's $1.99. One Rep Max also leads on update cadence (every 6 days vs every 3 months) and review sentiment (57% vs 39%). 1's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support there is nothing between them.

One Rep Max is free to download; 1 costs $1.99 up front. One Rep Max sells 2 in-app purchases, starting at $2.99 per month. 1 asks for nothing beyond the download.

1 holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: 1 has 1.1K ratings behind it against 185, so its average is the more settled of the two. Written reviews complicate that: 57% of One Rep Max's written reviews are positive against 39% of 1's, so the app with the better star average is not the one people write more warmly about.

One Rep Max ships an update every 6 days, 1 every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | One Rep Max | 1 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.4 (185 ratings)](https://appshunter.io/ios/app/one-rep-max-1rm-calculator/id950621710/reviews) | **[4.8 (1.1K ratings)](https://appshunter.io/ios/app/1-rm/id1274191954/reviews)** |
| Number of ratings | 185 | **1.1K** |
| Positive reviews | **57.1% of reviews** | 39.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 52 MB | 47 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Charles Vanderhoff](https://appshunter.io/developer/950621709) | [Bodybuilding.com](https://appshunter.io/developer/380871023) |

## What reviewers say

### One Rep Max

[App page](https://appshunter.io/ios/app/one-rep-max-1rm-calculator/id950621710)

Safely estimate your maximum lift potential for various strength exercises using scientific formulas. Track your progress visually, set goals, and fine-tune estimates with perceived exertion. Ideal for powerlifters, CrossFit athletes, and strength enthusiasts.

**Highlights:** Precise 1RM calculations with 7 scientific formulas, RPE integration for fine-tuned estimates, Custom exercise tracking for any lift, Visual progress graphs, Percentage charts for training, Goal setting and progress monitoring

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1RM Pro Monthly | $2.99 | per month |
| 1RM Pro Annual | $19.99 | per year |

**What reviewers like**

- 👍 Easy to use interface
- 📊 Tracks progress with charts
- ➕ Plate calculator bonus feature
- 📈 Supports multiple 1RM formulas
- 💪 Helpful for tracking RMs

**What reviewers complain about**

- 💰 Subscription required for features
- 💸 Features moved behind paywall
- 😩 Useless without subscription
- 🚫 Basic features now paid
- 💸 High subscription cost

**Reported bugs**

- Features behind paywall
- Forced ads
- Deleted lifting history
- Lost all logs with update
- Weight limit restriction

**Requested features**

- Allow editing of logs (date/time)
- Manual entry for weight preferred over slider
- Include different 1RM formulas (Epley, Brzycki)
- Ability to create custom graphs
- Fix weight limit restriction


### 1

[App page](https://appshunter.io/ios/app/1-rm/id1274191954)

Easily calculate and track your one-rep max (1RM) for any lift. Estimate your maximum weight safely without testing, and monitor your progress over time with detailed charts. Improve your training with expert articles.

**Highlights:** Calculate 1RM and percentages, Support for various lifts, Track 1RM history with charts, Add notes to calculations, Access expert training articles, Imperial/metric system support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Great for calculating reps
- 👍 Good, simple app
- 👍 Quick easy to use tool

**What reviewers complain about**

- 🐛 Numbers won't work
- 🐛 Single digit reps only
- 🐛 Links to articles not working
- 🐛 Keeps billing user
- 🐛 Inability to filter exercise history

**Reported bugs**

- Numbers won't work
- Single digit reps only
- Links to articles not working
- Keeps billing user
- Inability to filter exercise history

**Requested features**

- Show max weight for different rep ranges
- Option to count uneven weights
- Display percentages at all times
- Show percentile of max among lifters
- Allow selecting exercise to see PR chart


## Frequently asked questions

### Is One Rep Max free?

One Rep Max is free to download, with in-app purchases available.

### Is 1 free?

1 costs $1.99, with no in-app purchases.

### Which has better reviews, One Rep Max or 1?

1 is rated higher. One Rep Max averages 4.4 out of 5 from 185 ratings, while 1 averages 4.8 from 1.1K ratings.

### Do One Rep Max or 1 have ads?

One Rep Max shows ads; 1 does not.

### Which is updated more often, One Rep Max or 1?

One Rep Max ships an update every 6 days, and 1 every 3 months. Most recently, One Rep Max was updated on November 3, 2026 and 1 on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*