# OBSERV 520 vs EndermoLink

The clearest difference is ads: OBSERV 520 at none against EndermoLink's shown. OBSERV 520 also leads on iOS requirement (12.0 vs 16.6). EndermoLink's advantage is update cadence (every 2 months vs every 4 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OBSERV 520 ships an update every 4 months, EndermoLink every 2 months. The most recent releases landed on June 4, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | OBSERV 520 | EndermoLink |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/observ-520/id781554722/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 48 MB | 68 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [InnoFaith beauty sciences B.V.](https://appshunter.io/developer/583003631) | [LPG Systems](https://appshunter.io/developer/440519837) |

## What reviewers say

### OBSERV 520

[App page](https://appshunter.io/ios/app/observ-520/id781554722)

This professional skin analysis tool uses an iPad and specialized device to visualize skin conditions not visible to the naked eye. It aids in diagnosing, planning treatments, and advising clients on personalized skincare and product recommendations. The app allows for easy capture and comparison of before-and-after images to monitor treatment progress.

**Highlights:** Full-face skin analysis, Epidermal and dermal layer diagnosis, Targeted treatment planning, Personalized product advice, Live visualization of skin conditions, Before and after image monitoring, Multiple light modes (Daylight, Wood's/UV/Cross/Parallel Polarization)

**In-app purchases:** none


### EndermoLink

[App page](https://appshunter.io/ios/app/endermolink/id6636480754)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OBSERV 520 free?

OBSERV 520 is free to download, with no in-app purchases.

### Is EndermoLink free?

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

### Do OBSERV 520 or EndermoLink have ads?

EndermoLink shows ads; OBSERV 520 does not.

### Which is updated more often, OBSERV 520 or EndermoLink?

OBSERV 520 ships an update every 4 months, and EndermoLink every 2 months. Most recently, OBSERV 520 was updated on June 4, 2026 and EndermoLink on September 17, 2026.

---

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