# PurpleShift vs Peak Strength

The clearest difference is monetization model: PurpleShift at free with in-app purchases against Peak Strength's subscription. PurpleShift also leads on update cadence (weekly vs every 5 weeks). Peak Strength's advantage is ads (none vs shown) and ratings volume (1.5K vs 10). On price, rating, in-app purchases and device support there is nothing between them.

Both are free to download. PurpleShift sells 15 in-app purchases, starting at $9.99 per month and Peak Strength sells 6 in-app purchases, starting at $39.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for PurpleShift against 4.8 for Peak Strength. That said, the two scores are not equally well evidenced: Peak Strength has 1.5K ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 50% of PurpleShift's written reviews are positive against 72% of Peak Strength's.

PurpleShift ships an update weekly, Peak Strength every 5 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | PurpleShift | Peak Strength |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (10 ratings)](https://appshunter.io/ios/app/purpleshift/id1458774155/reviews)** | [4.8 (1.5K ratings)](https://appshunter.io/ios/app/peak-strength/id1632549195/reviews) |
| Number of ratings | 10 | **1.5K** |
| Positive reviews | 50.0% of reviews | **71.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 595 MB | 91 MB |
| Requires iOS | **16.0.0** | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [PURPLESHIFT LLC](https://appshunter.io/developer/1458774154) | [Garage Strength](https://appshunter.io/developer/1632549407) |

## What reviewers say

### PurpleShift

[App page](https://appshunter.io/ios/app/purpleshift/id1458774155)

This app uses AI to analyze athletic movements, turning your phone into a biomechanics lab. It provides detailed scores and insights into performance categories like takeoff symmetry and explosive timing, helping athletes and coaches improve. Offers a free option with ads or a premium subscription for unlimited ad-free analysis.

**Highlights:** AI-driven vertical jump analysis, Form score analysis across 7 categories, Potential tab with perfect form calculator, Professional video tools (protractor, scrubber), Smart athlete management (FaceID, multi-athlete), Data export for coaching analysis

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tier 1 Monthly | $9.99 | per month |
| Tier 2 Monthly Subscription | $39.99 | per month |
| Tier 3 Monthly Subscription | $49.99 | per month |
| Tier 1 Yearly Subscription | $109.99 | per year |
| Tier 2 Yearly Subscription | $459.99 | per year |
| Tier 3 Yearly Subscription | $579.99 | per year |
| Expedite Verification | $0.99 | one-time |
| Single PurpleShift Lab Coin | $1.99 | one-time |
| Single Verification Coins | $4.99 | one-time |
| 10 Pack PurpleShift Lab | $9.99 | one-time |
| Unlimited Verifications Weekly | $19.99 | one-time |
| Unlimited Sprint Coins WK | $24.99 | one-time |
| 10 Pack Verification Coins | $39.99 | one-time |
| Unlimited Verification Monthly | $49.99 | one-time |
| Unlimited Sprint Coins Monthly | $59.99 | one-time |


### Peak Strength

[App page](https://appshunter.io/ios/app/peak-strength/id1632549195)

This app provides personalized strength training plans for athletes of all levels, featuring HD exercise demonstrations, smart exercise swaps, and auto-regulated weights. It includes sport-specific programming, warm-ups, and a built-in rest timer for efficient and effective training.

**Highlights:** Pro-level workouts tailored to training level, HD exercise demonstrations with technique cues, Smart exercise swaps for equipment availability, Auto-regulated weights based on set difficulty, Sport-specific programming, Mobility and warm-up routines, Built-in rest timer

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $39.99 | per month |
| Monthly | $39.99 | per month |
| Annual | $299.00 | per year |
| Annual | $299.00 | per year |
| Annual | $399.99 | per year |
| Annual | $399.99 | per year |

**What reviewers like**

- 🚀 Great programming and workouts
- 👍 Customizable and personalized
- 📚 Excellent tutorial videos
- ⏱️ Helpful rest timers
- 🤖 AI-powered programming

**What reviewers complain about**

- 🐛 App crashes and bugs
- 💰 Expensive subscription cost
- 🔄 Lack of flexibility in program progression
- 🤖 AI recommendations not always accurate
- 🔍 Difficulty navigating the app

**Reported bugs**

- App crashing when phone is locked or times out
- Issues with weight and rep recommendations
- Workout progress not saving properly

**Requested features**

- Offline mode with local data caching
- More dynamic and sport-specific exercises
- Ability to pause/resume workouts
- Integration with wearable devices
- Better calendar and scheduling features


## Frequently asked questions

### Is PurpleShift free?

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

### Is Peak Strength free?

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

### Which has better reviews, PurpleShift or Peak Strength?

PurpleShift is rated higher. PurpleShift averages 4.8 out of 5 from 10 ratings, while Peak Strength averages 4.8 from 1.5K ratings.

### Do PurpleShift or Peak Strength have ads?

PurpleShift shows ads; Peak Strength does not.

### Which is updated more often, PurpleShift or Peak Strength?

PurpleShift ships an update weekly, and Peak Strength every 5 weeks. Most recently, PurpleShift was updated on October 24, 2026 and Peak Strength on October 24, 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.*