# 16 RTSP Player vs OpenSurvey3D

The clearest difference is update cadence: 16 RTSP Player at weekly against OpenSurvey3D's every 3 weeks. 16 RTSP Player also leads on iOS requirement (17.6 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

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

16 RTSP Player ships an update weekly, OpenSurvey3D every 3 weeks. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 16 RTSP Player | OpenSurvey3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 32 MB | 22 MB |
| Requires iOS | **17.6** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SungWook Park](https://appshunter.io/developer/1892965166) | [Laan Labs](https://appshunter.io/developer/310916919) |

## What reviewers say

### 16 RTSP Player

[App page](https://appshunter.io/ios/app/16-rtsp-player/id6762438787)

**Features:** macOS Compatibility

**In-app purchases:** none


### OpenSurvey3D

[App page](https://appshunter.io/ios/app/opensurvey3d/id6794840161)

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

**In-app purchases:** none


## Frequently asked questions

### Is 16 RTSP Player free?

16 RTSP Player is free to download, with no in-app purchases.

### Is OpenSurvey3D free?

OpenSurvey3D is free to download, with no in-app purchases.

### Do 16 RTSP Player or OpenSurvey3D have ads?

Neither 16 RTSP Player nor OpenSurvey3D shows ads.

### Which is updated more often, 16 RTSP Player or OpenSurvey3D?

16 RTSP Player ships an update weekly, and OpenSurvey3D every 3 weeks. Most recently, 16 RTSP Player was updated on October 31, 2026 and OpenSurvey3D on November 6, 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.*