# FLOWBIO vs Spren Body Composition Scanner

The clearest difference is review sentiment: Spren Body Composition Scanner at 46% against FLOWBIO's 0%. Spren Body Composition Scanner also leads on rating (4.7 vs 3.0) and ratings volume (1.5K vs 2). FLOWBIO's advantage is in-app purchases (none vs 14). On price, update cadence, 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. FLOWBIO asks for nothing beyond the download.

Spren Body Composition Scanner holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Spren Body Composition Scanner has 1.5K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of FLOWBIO's written reviews are positive against 46% of Spren Body Composition Scanner's.

FLOWBIO ships an update fortnightly, Spren Body Composition Scanner every 9 days. The most recent releases landed on October 5, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | FLOWBIO | Spren Body Composition Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/flowbio/id1614407048/reviews) | **[4.7 (1.5K ratings)](https://appshunter.io/ios/app/spren-body-composition-scanner/id1664503999/reviews)** |
| Number of ratings | 2 | **1.5K** |
| Positive reviews | 0.0% of reviews | **46.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 37 MB | 207 MB |
| Requires iOS | 26.0 | **17** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [FLOWBIO LTD](https://appshunter.io/developer/1607898930) | [Elite HRV Inc](https://appshunter.io/developer/868829973) |

## What reviewers say

### FLOWBIO

[App page](https://appshunter.io/ios/app/flowbio/id1614407048)

This app analyzes sweat data to provide personalized hydration and recovery strategies for athletes. It connects to a sweat sensor to track fluid and sodium loss, offering tailored plans and pre-session predictions to optimize performance.

**Highlights:** Personalized hydration strategies, Tailored recovery plans, Pre-session performance predictions, Intake logging, Support for electrolyte brands, Integrations with Garmin, Wahoo, Zwift, Coros

**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 (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


## Frequently asked questions

### Is FLOWBIO free?

FLOWBIO 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.

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

Spren Body Composition Scanner is rated higher. FLOWBIO averages 3.0 out of 5 from 2 ratings, while Spren Body Composition Scanner averages 4.7 from 1.5K ratings.

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

Neither FLOWBIO nor Spren Body Composition Scanner shows ads.

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

FLOWBIO ships an update fortnightly, and Spren Body Composition Scanner every 9 days. Most recently, FLOWBIO was updated on October 5, 2026 and Spren Body Composition Scanner on October 16, 2026.

---

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