# Nalco E vs Dipslide Comparator 2

Nalco E and Dipslide Comparator 2 both sit at 3.0 stars, but that hides the real split: 14% of Nalco E's written reviews are positive against 0% of Dipslide Comparator 2's. Nalco E also leads on update cadence (every 5 weeks vs every 3 months) and ratings volume (21 vs 2). 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 — 3.0 for Nalco E against 3.0 for Dipslide Comparator 2. That said, the two scores are not equally well evidenced: Nalco E has 21 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 14% of Nalco E's written reviews are positive against 0% of Dipslide Comparator 2's.

Nalco E ships an update every 5 weeks, Dipslide Comparator 2 every 3 months. The most recent releases landed on June 4, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Nalco E | Dipslide Comparator 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (21 ratings)](https://appshunter.io/ios/app/nalco-e-data/id1229919601/reviews) | [3.0 (2 ratings)](https://appshunter.io/ios/app/dipslide-comparator-2/id1609262113/reviews) |
| Number of ratings | **21** | 2 |
| Positive reviews | **14.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 109 MB | 32 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NALCO COMPANY LLC](https://appshunter.io/developer/1229919600) | [Tintometer GmbH](https://appshunter.io/developer/984994415) |

## What reviewers say

### Nalco E

[App page](https://appshunter.io/ios/app/nalco-e-data/id1229919601)

This app allows users to easily capture and track system-specific data, including water chemistry, inventory, and meter readings. It helps ensure optimal performance of water systems and proactively identifies potential issues. Features include offline data capture and alerts for out-of-limit results.

**Highlights:** Capture water chemistry, inventory, and meter data, Trigger alerts for out-of-limit results, Measure bacteria counts quickly, Offline data capture capability, Proactive identification of system issues

**Features:** macOS Compatibility

**In-app purchases:** none


### Dipslide Comparator 2

[App page](https://appshunter.io/ios/app/dipslide-comparator-2/id1609262113)

Easily compare your dipslide images to industry standards using your device's camera. Track site results, save comparisons, and email reports to your office. Includes historical data and helpful tips.

**Highlights:** Compare dipslide images to standards, Save and email comparison results, View historical comparison data, Automatic image deletion, Multiple dipslide types supported

**In-app purchases:** none


## Frequently asked questions

### Is Nalco E free?

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

### Is Dipslide Comparator 2 free?

Dipslide Comparator 2 is free to download, with no in-app purchases.

### Which has better reviews, Nalco E or Dipslide Comparator 2?

Nalco E and Dipslide Comparator 2 are both rated 3.0 out of 5 on the App Store, from 21 and 2 ratings respectively.

### Do Nalco E or Dipslide Comparator 2 have ads?

Neither Nalco E nor Dipslide Comparator 2 shows ads.

### Which is updated more often, Nalco E or Dipslide Comparator 2?

Nalco E ships an update every 5 weeks, and Dipslide Comparator 2 every 3 months. Most recently, Nalco E was updated on June 4, 2026 and Dipslide Comparator 2 on September 15, 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.*