# UNK Rec vs Spren Body Composition Scanner

The clearest difference is in-app purchases: UNK Rec at none against Spren Body Composition Scanner's 10. UNK Rec also leads on iOS requirement (14.0 vs 17). Spren Body Composition Scanner's advantage is update cadence (every 9 days vs every 11 months). On price, ads and device support there is nothing between them.

Both are free to download. Spren Body Composition Scanner sells 10 in-app purchases, starting at $10.49 per month. UNK Rec asks for nothing beyond the download.

UNK Rec ships an update every 11 months, Spren Body Composition Scanner every 9 days. The most recent releases landed on October 25, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | UNK Rec | Spren Body Composition Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (1.5K ratings)](https://appshunter.io/ios/app/spren-body-composition-scanner/id1664503999/reviews)** |
| Number of ratings | — | **1.5K** |
| Positive reviews | — | 46.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 43 MB | 207 MB |
| Requires iOS | **14.0** | 17 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [InnoSoft Canada Inc.](https://appshunter.io/developer/672385534) | [Elite HRV Inc](https://appshunter.io/developer/868829973) |

## What reviewers say

### UNK Rec

[App page](https://appshunter.io/ios/app/unk-rec/id1525238980)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 (10)**

| 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 |
| Scan Essentials | $38.99 | per year |
| Quarterly | $59.99 | per 3 months |
| Annual | $69.99 | per year |
| Annual | $119.99 | per year |
| 24/7 AI coaching support | $129.00 | per year |
| Body Composition Analysis | $17.99 | 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


## Frequently asked questions

### Is UNK Rec free?

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

### Is Spren Body Composition Scanner free?

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

### Do UNK Rec or Spren Body Composition Scanner have ads?

Neither UNK Rec nor Spren Body Composition Scanner shows ads.

### Which is updated more often, UNK Rec or Spren Body Composition Scanner?

UNK Rec ships an update every 11 months, and Spren Body Composition Scanner every 9 days. Most recently, UNK Rec was updated on October 25, 2026 and Spren Body Composition Scanner on November 3, 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.*