# SKF Machine train alignment vs RC UFO

The clearest difference is ads: SKF Machine train alignment at none against RC UFO's shown. RC UFO's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence, 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.

SKF Machine train alignment ships an update every 3 months, RC UFO every 2 months. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | SKF Machine train alignment | RC UFO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.4 (164 ratings)](https://appshunter.io/ios/app/rc-ufo/id6502386083/reviews)** |
| Number of ratings | — | **164** |
| Positive reviews | — | 27.9% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Ad-supported |
| Size | 69 MB | 121 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [SKF](https://appshunter.io/developer/472922971) | [shenzhen cooingdv technology co.,ltd.](https://appshunter.io/developer/1255741645) |

## What reviewers say

### SKF Machine train alignment

[App page](https://appshunter.io/ios/app/skf-machine-train-alignment/id1149906003)

**Features:** macOS Compatibility

**In-app purchases:** none


### RC UFO

[App page](https://appshunter.io/ios/app/rc-ufo/id6502386083)

Control and display functions for toy drones. Offers innovative and diversified control methods for an enhanced flying experience.

**Highlights:** Drone control functions, Display functions, Diversified control methods, Innovative control

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 💡 Good for the price
- 🚀 Works well with drone

**What reviewers complain about**

- 🐛 Connectivity issues
- 🐛 Unreliable performance
- 🔒 Privacy concerns
- 🔋 Poor battery life

**Reported bugs**

- Cannot connect to drone
- Constant error messages
- App crashes frequently

**Requested features**

- Better camera quality
- Improved drone control
- More reliable connection


## Frequently asked questions

### Is SKF Machine train alignment free?

SKF Machine train alignment is free to download, with no in-app purchases.

### Is RC UFO free?

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

### Do SKF Machine train alignment or RC UFO have ads?

RC UFO shows ads; SKF Machine train alignment does not.

### Which is updated more often, SKF Machine train alignment or RC UFO?

SKF Machine train alignment ships an update every 3 months, and RC UFO every 2 months. Most recently, SKF Machine train alignment was updated on October 11, 2026 and RC UFO on October 13, 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.*