# Custom4U Ottobock vs Synsys

The clearest difference is update cadence: Custom4U Ottobock at monthly against Synsys's every 4 months. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 1.0 for Custom4U Ottobock against 1.0 for Synsys. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Custom4U Ottobock ships an update monthly, Synsys every 4 months. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Custom4U Ottobock | Synsys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/custom4u-ottobock/id1451210370/reviews) | [1.0 (1 ratings)](https://appshunter.io/ios/app/synsys/id1568455886/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | Free |
| Size | 136 MB | 114 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [TechMed 3D](https://appshunter.io/developer/964196047) | [Proteor](https://appshunter.io/developer/1061959922) |

## What reviewers say

### Custom4U Ottobock

[App page](https://appshunter.io/ios/app/custom4u-ottobock/id1451210370)

This medical app facilitates 3D scanning of lower limbs for custom-made prosthetic liners. It utilizes the Structure SDK/TrueDepth camera on compatible iPads for quick and accurate scans. The resulting data is sent directly to Ottobock for efficient fabrication.

**Highlights:** 3D scanning for lower limb prosthetics, Utilizes Structure SDK/TrueDepth camera, Portable and easy to use, Fast custom liner fabrication, Below-knee (BK) limb scanning

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Synsys

[App page](https://appshunter.io/ios/app/synsys/id1568455886)

This app is designed exclusively for managing SYNSYS prostheses. Users require setup by a certified professional and internet access on a compatible Apple device. It facilitates user connections and details generated through the prosthesis.

**Highlights:** Manages SYNSYS prostheses, Requires certified professional setup, Internet access needed, Compatible with iPhone and iPad, Generates user connections and details

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Custom4U Ottobock free?

Custom4U Ottobock is free to download, with no in-app purchases.

### Is Synsys free?

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

### Which has better reviews, Custom4U Ottobock or Synsys?

Custom4U Ottobock and Synsys are both rated 1.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Custom4U Ottobock or Synsys have ads?

Neither Custom4U Ottobock nor Synsys shows ads.

### Which is updated more often, Custom4U Ottobock or Synsys?

Custom4U Ottobock ships an update monthly, and Synsys every 4 months. Most recently, Custom4U Ottobock was updated on October 7, 2026 and Synsys on October 16, 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.*