# Chain Effect PT vs ShapeScale

The clearest difference is rating: Chain Effect PT at 5.0 against ShapeScale's 4.0. ShapeScale's advantage is update cadence (weekly vs every 14 months) and ratings volume (43 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Chain Effect PT holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: ShapeScale has 43 ratings behind it against 2, so its average is the more settled of the two.

Chain Effect PT ships an update every 14 months, ShapeScale weekly. The most recent releases landed on September 20, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Chain Effect PT | ShapeScale |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chain-effect-pt/id1222418179/reviews)** | [4.0 (43 ratings)](https://appshunter.io/ios/app/shapescale-body-composition/id1483088842/reviews) |
| Number of ratings | 2 | **43** |
| Positive reviews | — | 58.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Weekly** |
| Monetization | Free | Free |
| Size | 31 MB | 98 MB |
| Requires iOS | **13.4** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [PT Wired, Inc.](https://appshunter.io/developer/1175316334) | [ShapeScale](https://appshunter.io/developer/1483088841) |

## What reviewers say

### Chain Effect PT

[App page](https://appshunter.io/ios/app/chain-effect-pt/id1222418179)

Access your personalized home exercise program with HD instructional videos. Track your progress with awards and securely message your provider. Integrates with your iPhone's Health app for activity monitoring.

**Highlights:** Personalized Home Exercise Program, HD Instructional Videos, Progress Tracking with Awards, Secure Messaging with Provider, Health App Integration, Multi-language Support

**Features:** macOS Compatibility

**In-app purchases:** none


### ShapeScale

[App page](https://appshunter.io/ios/app/shapescale-body-composition/id1483088842)

This app uses a 3D body scanner to provide detailed body composition analysis, including body fat percentage, girth, and volume measurements. Track your progress visually with 3D comparisons and heatmaps, and receive personalized feedback to achieve your fitness goals.

**Highlights:** 3D Body Scan, Personalized Health & Shape Scores, Body fat percentage and BMI tracking, Girth and Volumetric Measurements, Heatmap for change visualization, Side-by-Side 3D Scan Comparison

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

**In-app purchases:** none


## Frequently asked questions

### Is Chain Effect PT free?

Chain Effect PT is free to download, with no in-app purchases.

### Is ShapeScale free?

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

### Which has better reviews, Chain Effect PT or ShapeScale?

Chain Effect PT is rated higher. Chain Effect PT averages 5.0 out of 5 from 2 ratings, while ShapeScale averages 4.0 from 43 ratings.

### Do Chain Effect PT or ShapeScale have ads?

Neither Chain Effect PT nor ShapeScale shows ads.

### Which is updated more often, Chain Effect PT or ShapeScale?

Chain Effect PT ships an update every 14 months, and ShapeScale weekly. Most recently, Chain Effect PT was updated on September 20, 2026 and ShapeScale on September 10, 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.*