# NASA SBX vs Shield222

The clearest difference is rating: Shield222 at 5.0 against NASA SBX's 4.3. Shield222 also leads on update cadence (fortnightly vs every 8 months) and iOS requirement (13.0 vs 15.0). NASA SBX's advantage is ratings volume (9 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Shield222 holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: NASA SBX has 9 ratings behind it against 1, so its average is the more settled of the two.

NASA SBX ships an update every 8 months, Shield222 fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | NASA SBX | Shield222 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (9 ratings)](https://appshunter.io/ios/app/nasa-sbx/id1147705250/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/shield222/id6449041539/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 28 MB | 28 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NASA](https://appshunter.io/developer/355542146) | [Eden Park Illumination Inc](https://appshunter.io/developer/1613387611) |

## What reviewers say

### NASA SBX

[App page](https://appshunter.io/ios/app/nasa-sbx/id1147705250)

This app connects small businesses with NASA contracting opportunities. It provides access to contract listings, networking with NASA specialists, and agency metrics data. Stay informed about the latest small business news and events to contribute to NASA's mission.

**Highlights:** Active contract listings, Requests for proposals, Network with Small Business Specialists, Explore prime metrics data, Small business news and events

**Features:** Vision Pro support

**In-app purchases:** none


### Shield222

[App page](https://appshunter.io/ios/app/shield222/id6449041539)

This app works with a special device to measure and monitor 222nm Far UV-C germicidal devices. It helps you track UV readings remotely, understand disinfection effectiveness, and learn about UV dose limits for a cleaner, healthier environment.

**Highlights:** Measure and monitor UV-C germicidal devices, Track UV readings remotely, Understand UV dose threshold limits, User-friendly interface, Compatible with MeasureShield222 device

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NASA SBX free?

NASA SBX is free to download, with no in-app purchases.

### Is Shield222 free?

Shield222 is free to download, with no in-app purchases.

### Which has better reviews, NASA SBX or Shield222?

Shield222 is rated higher. NASA SBX averages 4.3 out of 5 from 9 ratings, while Shield222 averages 5.0 from 1 ratings.

### Do NASA SBX or Shield222 have ads?

Neither NASA SBX nor Shield222 shows ads.

### Which is updated more often, NASA SBX or Shield222?

NASA SBX ships an update every 8 months, and Shield222 fortnightly. Most recently, NASA SBX was updated on October 24, 2026 and Shield222 on October 24, 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.*