# Spren Body Composition Scanner vs ShellShock Trainer

The clearest difference is review sentiment: ShellShock Trainer at 100% against Spren Body Composition Scanner's 46%. ShellShock Trainer also leads on in-app purchases (none vs 14) and rating (5.0 vs 4.7). Spren Body Composition Scanner's advantage is ratings volume (1.5K vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Spren Body Composition Scanner sells 14 in-app purchases, starting at $10.49 per month. ShellShock Trainer asks for nothing beyond the download.

ShellShock Trainer holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Spren Body Composition Scanner has 1.5K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 46% of Spren Body Composition Scanner's written reviews are positive against 100% of ShellShock Trainer's.

Spren Body Composition Scanner ships an update every 9 days, ShellShock Trainer every 4 days. The most recent releases landed on October 22, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Spren Body Composition Scanner | ShellShock Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.5K ratings)](https://appshunter.io/ios/app/spren-body-composition-scanner/id1664503999/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shellshock-trainer/id6807605710/reviews)** |
| Number of ratings | **1.5K** | 1 |
| Positive reviews | 46.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 207 MB | 8 MB |
| Requires iOS | 17 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Elite HRV Inc](https://appshunter.io/developer/868829973) | [Atlas Nutricles LLC](https://appshunter.io/developer/6807605712) |

## What reviewers say

### Spren Body Composition Scanner

[App page](https://appshunter.io/ios/app/spren-body-composition-scanner/id1664503999)

This app uses your smartphone to measure body fat percentage, BMI, and body composition. It provides detailed health reports, tracks weight loss, and offers personalized nutrition plans, acting as a smart scale alternative with research-grade analysis.

**Highlights:** Body fat percentage measurement, BMI calculator, Body composition analysis, Weight tracking, Personalized nutrition planning, Multi-page PDF reports

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scan Essentials | $10.49 | per month |
| Monthly | $14.99 | per month |
| Monthly | $19.99 | per month |
| 24/7 AI coaching support | $20.99 | per month |
| Monthly | $24.99 | per month |
| Scan Essentials | $38.99 | per year |
| Quarterly | $59.99 | per 3 months |
| Annual | $69.99 | per year |
| Semiannual | $89.99 | per 6 months |
| Annual | $119.99 | per year |
| 24/7 AI coaching support | $129.00 | per year |
| Body Composition Analysis | $8.99 | one-time |
| Body Composition Analysis | $17.99 | one-time |
| Body Composition Analysis | $35.99 | one-time |

**What reviewers like**

- 👍 Easy to operate
- 🚀 Motivating
- 👍 Incredible app
- 👍 Accurate
- 👍 Talks you through the scan

**What reviewers complain about**

- 🐛 No login possible
- 🐛 Doesn't work
- 🐛 Measurements are nowhere close to DEXA scans
- 🐛 Can't delete account
- 🐛 Useless

**Reported bugs**

- No login possible
- Doesn't work
- Measurements are nowhere close to DEXA scans
- Can't delete account
- Useless

**Requested features**

- Integration with Apple Health for weight tracking
- Demo or trial before subscription
- Monthly subscription option


### ShellShock Trainer

[App page](https://appshunter.io/ios/app/shellshock-trainer/id6807605710)

Log your gym sessions, track personal records, and visualize which muscles you've worked. Connect with a supportive community of lifters, share your progress, and discover new training routines.

**Highlights:** Log workouts and sessions, Track personal records (PRs), Visualize muscle engagement, Connect with a lifting community, Save training history, Follow other lifters

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

**In-app purchases:** none


## Frequently asked questions

### Is Spren Body Composition Scanner free?

Spren Body Composition Scanner is free to download, with in-app purchases available.

### Is ShellShock Trainer free?

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

### Which has better reviews, Spren Body Composition Scanner or ShellShock Trainer?

ShellShock Trainer is rated higher. Spren Body Composition Scanner averages 4.7 out of 5 from 1.5K ratings, while ShellShock Trainer averages 5.0 from 1 ratings.

### Do Spren Body Composition Scanner or ShellShock Trainer have ads?

Neither Spren Body Composition Scanner nor ShellShock Trainer shows ads.

### Which is updated more often, Spren Body Composition Scanner or ShellShock Trainer?

Spren Body Composition Scanner ships an update every 9 days, and ShellShock Trainer every 4 days. Most recently, Spren Body Composition Scanner was updated on October 22, 2026 and ShellShock Trainer on October 26, 2026.

---

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