# Link2Valves vs NDX Ground Ops

The clearest difference is update cadence: Link2Valves at every 9 days against NDX Ground Ops's every 3 months. Link2Valves also leads on ratings volume (6 vs 2). NDX Ground Ops's advantage is monetization model (free vs ad-supported). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for Link2Valves against 5.0 for NDX Ground Ops. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

Link2Valves ships an update every 9 days, NDX Ground Ops every 3 months. The most recent releases landed on October 19, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Link2Valves | NDX Ground Ops |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (6 ratings)](https://appshunter.io/ios/app/link2valves/id1478479539/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/ndx-ground-ops/id6504170678/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 months |
| Monetization | Ad-supported | **Free** |
| Size | 26 MB | 19 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Griswold Industries](https://appshunter.io/developer/1478479538) | [NDX LLC](https://appshunter.io/developer/1720955127) |

## What reviewers say

### Link2Valves

[App page](https://appshunter.io/ios/app/link2valves/id1478479539)

This utility app helps water systems track the maintenance status of their control valves. It provides an intuitive platform to manage asset information, schedule preventative maintenance, and minimize downtime for water system infrastructure.

**Highlights:** Track control valve maintenance status, Manage water system asset information, Schedule preventative maintenance, Minimize equipment downtime, View, edit, and create valve assets, Sync data with web portal

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

**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 Link2Valves free?

Link2Valves 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, Link2Valves or NDX Ground Ops?

Link2Valves and NDX Ground Ops are both rated 5.0 out of 5 on the App Store, from 6 and 2 ratings respectively.

### Do Link2Valves or NDX Ground Ops have ads?

Neither Link2Valves nor NDX Ground Ops shows ads.

### Which is updated more often, Link2Valves or NDX Ground Ops?

Link2Valves ships an update every 9 days, and NDX Ground Ops every 3 months. Most recently, Link2Valves was updated on October 19, 2026 and NDX Ground Ops on October 9, 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.*