# Promark VR vs Rotor

The clearest difference is price: Promark VR at Free against Rotor's $2.99. Promark VR also leads on iOS requirement (12.0 vs 17.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Promark VR is free to download; Rotor costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Promark VR ships an update monthly, Rotor every 3 weeks. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Promark VR | Rotor |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[3.1 (55 ratings)](https://appshunter.io/ios/app/promark-vr/id1131572874/reviews)** | — |
| Number of ratings | **55** | — |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 32 MB | 2 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ShanTou City Vison Electronictechnology Co., Ltd.](https://appshunter.io/developer/1388222999) | [Matthew Mesropian](https://appshunter.io/developer/1854252282) |

## What reviewers say

### Promark VR

[App page](https://appshunter.io/ios/app/promark-vr/id1131572874)

Control a toy quadrocopter via Wi-Fi with real-time video streaming. This application enables seamless piloting and visual feedback from your drone.

**Highlights:** Wi-Fi quadrocopter control, Real-time video transfer, Drone piloting, Live video feed

**Features:** macOS Compatibility

**In-app purchases:** none


### Rotor

[App page](https://appshunter.io/ios/app/rotor-vibration-analyzer/id6799832780)

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

**In-app purchases:** none


## Frequently asked questions

### Is Promark VR free?

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

### Is Rotor free?

Rotor costs $2.99, with no in-app purchases.

### Do Promark VR or Rotor have ads?

Neither Promark VR nor Rotor shows ads.

### Which is updated more often, Promark VR or Rotor?

Promark VR ships an update monthly, and Rotor every 3 weeks. Most recently, Promark VR was updated on October 24, 2026 and Rotor on October 26, 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.*