# Spren Body Composition Scanner vs The Longevity AI

The clearest difference is rating: Spren Body Composition Scanner at 4.7 against The Longevity AI's 3.7. Spren Body Composition Scanner also leads on ratings volume (1.5K vs 3). The Longevity AI's advantage is in-app purchases (none vs 10) and device support (3 vs 1). On price, update cadence and ads 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. The Longevity AI asks for nothing beyond the download.

Spren Body Composition Scanner holds the better App Store score, 4.7 against 3.7. That said, the two scores are not equally well evidenced: Spren Body Composition Scanner has 1.5K ratings behind it against 3, so its average is the more settled of the two.

Spren Body Composition Scanner ships an update every 9 days, The Longevity AI every 6 days. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Spren Body Composition Scanner | The Longevity AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.5K ratings)](https://appshunter.io/ios/app/spren-body-composition-scanner/id1664503999/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/the-longevity-ai/id6736524732/reviews) |
| Number of ratings | **1.5K** | 3 |
| Positive reviews | 46.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 207 MB | 135 MB |
| Requires iOS | 17 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Elite HRV Inc](https://appshunter.io/developer/868829973) | [Longr UK Ltd.](https://appshunter.io/developer/1772268783) |

## 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 (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


### The Longevity AI

[App page](https://appshunter.io/ios/app/the-longevity-ai/id6736524732)

This app helps you improve your longevity through data-driven insights across activity, diet, sleep, and mindfulness. Connect your wearable to discover your biological age and receive personalized coaching to help lower it over time.

**Highlights:** Data-driven longevity insights, Biometric and visual AI analysis, Wearable device integration, Biological age discovery, Personalized coaching, Focus on Activity, Diet, Sleep, Mindfulness

**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 The Longevity AI free?

The Longevity AI is free to download, with no in-app purchases.

### Which has better reviews, Spren Body Composition Scanner or The Longevity AI?

Spren Body Composition Scanner is rated higher. Spren Body Composition Scanner averages 4.7 out of 5 from 1.5K ratings, while The Longevity AI averages 3.7 from 3 ratings.

### Do Spren Body Composition Scanner or The Longevity AI have ads?

Neither Spren Body Composition Scanner nor The Longevity AI shows ads.

### Which is updated more often, Spren Body Composition Scanner or The Longevity AI?

Spren Body Composition Scanner ships an update every 9 days, and The Longevity AI every 6 days. Most recently, Spren Body Composition Scanner was updated on November 7, 2026 and The Longevity AI on October 30, 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.*