# CTVista+ vs ATG EIM

The clearest difference is update cadence: CTVista+ at every 2 months against ATG EIM's every 4 months. 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.

CTVista+ ships an update every 2 months, ATG EIM every 4 months. The most recent releases landed on August 6, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | CTVista+ | ATG EIM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (11 ratings)](https://appshunter.io/ios/app/ctvista-plus/id1370245161/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 22 MB | 3 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chemtreat International, Inc.](https://appshunter.io/developer/1370245160) | [Advanced Technologies Group](https://appshunter.io/developer/732016893) |

## What reviewers say

### CTVista+

[App page](https://appshunter.io/ios/app/ctvista-plus/id1370245161)

Monitor and control your water treatment system with real-time access to performance parameters, management reports, and inventory levels. This intelligent application helps you collect and react to critical water treatment operations 24/7.

**Highlights:** Real-time performance parameter monitoring, Management use reports, Inventory level tracking, 24/7 system access, Intelligent data collection and reaction

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

**In-app purchases:** none


### ATG EIM

[App page](https://appshunter.io/ios/app/atg-eim/id1608533971)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CTVista+ free?

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

### Is ATG EIM free?

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

### Do CTVista+ or ATG EIM have ads?

Neither CTVista+ nor ATG EIM shows ads.

### Which is updated more often, CTVista+ or ATG EIM?

CTVista+ ships an update every 2 months, and ATG EIM every 4 months. Most recently, CTVista+ was updated on August 6, 2026 and ATG EIM on September 21, 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.*