# 1 vs JuggernautAI

The clearest difference is price: JuggernautAI at Free against 1's $1.99. JuggernautAI also leads on review sentiment (73% vs 39%) and update cadence (every 4 days vs every 3 months). 1's advantage is in-app purchases (none vs 2) and iOS requirement (10.0 vs 15.6). On rating, ads and device support there is nothing between them.

JuggernautAI is free to download; 1 costs $1.99 up front. JuggernautAI sells 1 in-app purchase, starting at $34.99 per month. 1 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for 1 against 4.8 for JuggernautAI. That said, the two scores are not equally well evidenced: JuggernautAI has 5.7K ratings behind it against 1.1K, so its average is the more settled of the two. Written reviews are what separate them: 39% of 1's written reviews are positive against 73% of JuggernautAI's.

1 ships an update every 3 months, JuggernautAI every 4 days. Both last shipped on October 14, 2026.

## The numbers

| Metric | 1 | JuggernautAI |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.8 (1.1K ratings)](https://appshunter.io/ios/app/1-rm/id1274191954/reviews) | [4.8 (5.7K ratings)](https://appshunter.io/ios/app/juggernautai/id1515756471/reviews) |
| Number of ratings | 1.1K | **5.7K** |
| Positive reviews | 39.4% of reviews | **72.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | **Free** | Subscription |
| Size | 47 MB | 108 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 17+ |
| Developer | [Bodybuilding.com](https://appshunter.io/developer/380871023) | [Juggernaut Apps](https://appshunter.io/developer/1627775482) |

## What reviewers say

### 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


### JuggernautAI

[App page](https://appshunter.io/ios/app/juggernautai/id1515756471)

This app uses AI to create personalized strength training programs for powerlifting and powerbuilding. It adapts to your feedback and goals, optimizing volume, frequency, and exercise selection for maximum strength gains and recovery.

**Highlights:** AI-generated personalized workout plans, Powerlifting and Powerbuilding goal focus, Adaptive training based on real-time feedback, Optimized training frequency and volume, Exercise selection for weak points, Periodization strategy for fatigue management

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| JuggernautAI Monthly | $34.99 | per month |

**What reviewers like**

- 🚀 Excellent programming and customization
- 👍 Detailed and user-friendly app
- 🔍 Adjusts based on user feedback
- 📈 Helps users achieve their goals
- 💪 Effective for building strength and muscle

**What reviewers complain about**

- 💰 Expensive monthly subscription
- 🔒 Paywall restricts access to full app
- 🕰️ Excessive time required for workouts
- 🐛 Occasional bugs and glitches

**Reported bugs**

- Clearing of workout history after each block
- Issues with the auto-timer feature
- Problems with selecting dates and times during setup

**Requested features**

- Integration with Apple Health or other fitness apps
- More flexibility in scheduling and workout days
- Improved exercise library and replacement options
- Better tracking and history of past workouts


## Frequently asked questions

### Is 1 free?

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

### Is JuggernautAI free?

JuggernautAI is free to download, with in-app purchases available.

### Which has better reviews, 1 or JuggernautAI?

1 and JuggernautAI are both rated 4.8 out of 5 on the App Store, from 1.1K and 5.7K ratings respectively.

### Do 1 or JuggernautAI have ads?

Neither 1 nor JuggernautAI shows ads.

### Which is updated more often, 1 or JuggernautAI?

1 ships an update every 3 months, and JuggernautAI every 4 days. Most recently, 1 was updated on October 14, 2026 and JuggernautAI on October 14, 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.*