# Gastite Sizing App vs RC UFO

The clearest difference is review sentiment: Gastite Sizing App at 100% against RC UFO's 28%. Gastite Sizing App also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Gastite Sizing App ships an update every 3 weeks, RC UFO every 2 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Gastite Sizing App | RC UFO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.4 (166 ratings)](https://appshunter.io/ios/app/rc-ufo/id6502386083/reviews)** |
| Number of ratings | — | **166** |
| Positive reviews | **100.0% of reviews** | 27.9% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Size | 15 MB | 121 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [Gastite Systems Limited](https://appshunter.io/developer/1537998855) | [shenzhen cooingdv technology co.,ltd.](https://appshunter.io/developer/1255741645) |

## What reviewers say

### Gastite Sizing App

[App page](https://appshunter.io/ios/app/gastite-sizing-app/id1537998852)

This app simplifies calculating the required size of Gastite® CSST for gas installations. Input gas type, CSST length, and appliance power to instantly determine the correct size. It offers easy navigation, user-friendly design, and access to FAQs and installation guides.

**Highlights:** CSST sizing calculation, Natural gas or LPG selection, Access to FAQs, Downloadable installation guide, User-friendly design, Contact support

**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 Gastite Sizing App free?

Gastite Sizing App 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 Gastite Sizing App or RC UFO have ads?

RC UFO shows ads; Gastite Sizing App does not.

### Which is updated more often, Gastite Sizing App or RC UFO?

Gastite Sizing App ships an update every 3 weeks, and RC UFO every 2 months. Most recently, Gastite Sizing App was updated on November 3, 2026 and RC UFO on November 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*