# Spren Body Composition Scanner vs retimer

The clearest difference is review sentiment: Spren Body Composition Scanner at 46% against retimer's 0%. Spren Body Composition Scanner also leads on rating (4.7 vs 2.0) and ratings volume (1.5K vs 1). retimer's advantage is in-app purchases (none vs 14) and device support (3 vs 1). On price and ads 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. retimer asks for nothing beyond the download.

Spren Body Composition Scanner holds the better App Store score, 4.7 against 2.0. 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 0% of retimer's.

Spren Body Composition Scanner ships an update every 9 days, retimer every 3 weeks. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Spren Body Composition Scanner | retimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.5K ratings)](https://appshunter.io/ios/app/spren-body-composition-scanner/id1664503999/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/retimer/id6475566801/reviews) |
| Number of ratings | **1.5K** | 1 |
| Positive reviews | **46.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 207 MB | 108 MB |
| Requires iOS | 17 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Elite HRV Inc](https://appshunter.io/developer/868829973) | [Re-Time Pty Ltd](https://appshunter.io/developer/637379603) |

## 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


### retimer

[App page](https://appshunter.io/ios/app/retimer/id6475566801)

This app helps manage and monitor your circadian rhythm to improve sleep and energy levels. It works with a light therapy wearable to address issues like jet lag, irregular work hours, and general sleep difficulties.

**Highlights:** Circadian rhythm management, Sleep monitoring, Energy level improvement, Jet lag adjustment, Light therapy integration

**Features:** macOS Compatibility

**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 retimer free?

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

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

Spren Body Composition Scanner is rated higher. Spren Body Composition Scanner averages 4.7 out of 5 from 1.5K ratings, while retimer averages 2.0 from 1 ratings.

### Do Spren Body Composition Scanner or retimer have ads?

Neither Spren Body Composition Scanner nor retimer shows ads.

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

Spren Body Composition Scanner ships an update every 9 days, and retimer every 3 weeks. Most recently, Spren Body Composition Scanner was updated on October 16, 2026 and retimer on October 4, 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.*