# UDrone vs Strom Master

The clearest difference is in-app purchases: Strom Master at none against UDrone's 10. UDrone's advantage is update cadence (every 3 weeks vs every 56 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. UDrone sells 10 one-off in-app purchases. Strom Master asks for nothing beyond the download.

UDrone ships an update every 3 weeks, Strom Master every 56 months. The most recent releases landed on July 5, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | UDrone | Strom Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/udrone/id1381332255/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 56 months |
| Monetization | Free with in-app purchases | — |
| Size | 256 MB | 20 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen EEGSmart Technology Co., Ltd.](https://appshunter.io/developer/1072246018) | [少坤 陈](https://appshunter.io/developer/1492227021) |

## What reviewers say

### UDrone

[App page](https://appshunter.io/ios/app/udrone/id1381332255)

Control a selfie drone with your mind using brain-computer interface technology. The app offers focus training courses and detailed reports to enhance your drone control experience. Enjoy hands-free operation, face tracking, and gesture-based photography.

**Highlights:** Mind control drone operation, Focus training courses, Detailed focus reports, Face tracking, Gesture photography, HD video recording

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 玛吉薇蒳 放松助眠 | $1.99 | one-time |
| 儿童注意力与学习能力常见问题 | $5.99 | one-time |
| 购买测评次数10次 | $15.99 | one-time |
| 小事情撬动孩子大能力 | $18.99 | one-time |
| 儿童注意力与学习能力训练 | $18.99 | one-time |
| 20分钟还你高质量睡眠 | $18.99 | one-time |
| 让你效能翻倍还能年轻10岁 | $18.99 | one-time |
| 购买测评次数20次 | $22.99 | one-time |
| 玛吉薇蒳 减压安睡宝典 | $33.99 | one-time |
| 购买测评次数50次 | $54.99 | one-time |


### Strom Master

[App page](https://appshunter.io/ios/app/strom-master/id1533764225)

**In-app purchases:** none


## Frequently asked questions

### Is UDrone free?

UDrone is free to download, with in-app purchases available.

### Is Strom Master free?

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

### Do UDrone or Strom Master have ads?

Neither UDrone nor Strom Master shows ads.

### Which is updated more often, UDrone or Strom Master?

UDrone ships an update every 3 weeks, and Strom Master every 56 months. Most recently, UDrone was updated on July 5, 2026 and Strom Master on September 9, 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.*