# One Rep Max vs ActivForce

The clearest difference is review sentiment: One Rep Max at 58% against ActivForce's 17%. One Rep Max also leads on update cadence (every 4 days vs every 3 weeks) and ratings volume (178 vs 5). ActivForce's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. One Rep Max sells 3 in-app purchases, starting at $2.99 per month. ActivForce asks for nothing beyond the download.

ActivForce holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: One Rep Max has 178 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 58% of One Rep Max's written reviews are positive against 17% of ActivForce'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 4 days, ActivForce every 3 weeks. The most recent releases landed on September 14, 2026 and July 23, 2026 respectively.

## The numbers

| Metric | One Rep Max | ActivForce |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (178 ratings)](https://appshunter.io/ios/app/one-rep-max-1rm-calculator/id950621710/reviews) | **[4.8 (5 ratings)](https://appshunter.io/ios/app/activforce-digital-testing/id6741608693/reviews)** |
| Number of ratings | **178** | 5 |
| Positive reviews | **58.2% of reviews** | 16.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 48 MB | 29 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Charles Vanderhoff](https://appshunter.io/developer/950621709) | [Activbody, Inc.](https://appshunter.io/developer/1077331801) |

## 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 (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1RM Pro Monthly | $2.99 | per month |
| 1RM Pro Annual | $19.99 | per year |
| 1RM Pro Lifetime | $49.99 | one-time |

**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


### ActivForce

[App page](https://appshunter.io/ios/app/activforce-digital-testing/id6741608693)

This app syncs with a handheld device to provide real-time data for strength and range of motion testing. It helps practitioners optimize client care and recovery with accurate, data-driven insights and customizable testing sequences.

**Highlights:** Real-time strength and ROM data visualization, Customizable test sequences, Detailed data modeling and analysis, Offline functionality, Seamless web dashboard sync

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One Rep Max free?

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

### Is ActivForce free?

ActivForce is free to download, with no in-app purchases.

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

ActivForce is rated higher. One Rep Max averages 4.4 out of 5 from 178 ratings, while ActivForce averages 4.8 from 5 ratings.

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

One Rep Max shows ads; ActivForce does not.

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

One Rep Max ships an update every 4 days, and ActivForce every 3 weeks. Most recently, One Rep Max was updated on September 14, 2026 and ActivForce on July 23, 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.*