# SMS vs NDX Ground Ops

The clearest difference is monetization model: NDX Ground Ops at free against SMS's free with in-app purchases. NDX Ground Ops also leads on rating (5.0 vs 4.7). SMS's advantage is update cadence (monthly vs every 3 months) and iOS requirement (13.0 vs 16.6). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

NDX Ground Ops holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

SMS ships an update monthly, NDX Ground Ops every 3 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | SMS | NDX Ground Ops |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/sms-safety-management-system/id1163615681/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ndx-ground-ops/id6504170678/reviews)** |
| Number of ratings | **3** | 2 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 23 MB | 19 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NextGenSystems L.L.C](https://appshunter.io/developer/317927146) | [NDX LLC](https://appshunter.io/developer/1720955127) |

## What reviewers say

### SMS

[App page](https://appshunter.io/ios/app/sms-safety-management-system/id1163615681)

This app allows aviation companies to create custom safety management forms and generate accurate reports. It supports dynamic form creation and offers free downloadable templates, with a FRAT included in the demo.

**Highlights:** Customizable form creation, Accurate safety reporting, Dynamic form building, Free downloadable templates, User and activation code management, FRAT demo included

**Features:** macOS Compatibility

**In-app purchases:** none


### NDX Ground Ops

[App page](https://appshunter.io/ios/app/ndx-ground-ops/id6504170678)

This application provides real-time aircraft tracking, allowing users to monitor movements, tows, and flights. It also enables the generation of reports and identification of damage, with detailed statistics available via a web interface.

**Highlights:** Real-time aircraft tracking, Movement and tow monitoring, Flight data display, Damage identification, Report generation, Web app statistics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SMS free?

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

### Is NDX Ground Ops free?

NDX Ground Ops is free to download, with no in-app purchases.

### Which has better reviews, SMS or NDX Ground Ops?

NDX Ground Ops is rated higher. SMS averages 4.7 out of 5 from 3 ratings, while NDX Ground Ops averages 5.0 from 2 ratings.

### Do SMS or NDX Ground Ops have ads?

Neither SMS nor NDX Ground Ops shows ads.

### Which is updated more often, SMS or NDX Ground Ops?

SMS ships an update monthly, and NDX Ground Ops every 3 months. Most recently, SMS was updated on November 2, 2026 and NDX Ground Ops on October 30, 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.*