# Gastite Sizing App vs Motion Shield

The clearest difference is update cadence: Motion Shield at every 9 days against Gastite Sizing App's every 3 weeks. Gastite Sizing App's advantage is iOS requirement (13.0 vs 15.6). 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.

Gastite Sizing App ships an update every 3 weeks, Motion Shield every 9 days. The most recent releases landed on June 5, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Gastite Sizing App | Motion Shield |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 15 MB | 95 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gastite Systems Limited](https://appshunter.io/developer/1537998855) | [Motion Shield Ltd](https://appshunter.io/developer/1647587709) |

## 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


### Motion Shield

[App page](https://appshunter.io/ios/app/motion-shield/id6743201006)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gastite Sizing App free?

Gastite Sizing App is free to download, with no in-app purchases.

### Is Motion Shield free?

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

### Do Gastite Sizing App or Motion Shield have ads?

Neither Gastite Sizing App nor Motion Shield shows ads.

### Which is updated more often, Gastite Sizing App or Motion Shield?

Gastite Sizing App ships an update every 3 weeks, and Motion Shield every 9 days. Most recently, Gastite Sizing App was updated on June 5, 2026 and Motion Shield on September 14, 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.*