# AquaLXP vs LSI Calculator

The clearest difference is review sentiment: LSI Calculator at 100% against AquaLXP's 0%. On price, update cadence, 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.

AquaLXP ships an update every 3 months, LSI Calculator every 2 months. The most recent releases landed on September 16, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | AquaLXP | LSI Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (5 ratings)](https://appshunter.io/ios/app/lsi-calculator/id1233049990/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 84 MB | 52 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Tintometer, Inc](https://appshunter.io/developer/974709017) | [Pure Planet Science & Technology, Inc.](https://appshunter.io/developer/1234693265) |

## What reviewers say

### AquaLXP

[App page](https://appshunter.io/ios/app/aqualxp/id1214047349)

This app provides operators with step-by-step instructions and quick access to instrument information for the Lovibond® PTV Process Turbidimeter. It stores complete instrument history, allows for data calculation and graphing, and includes user security features.

**Highlights:** Step-by-step illustrated instructions, Access to instrument history, Data calculation and graphing, User security with password protection, Bluetooth connectivity to sensor, Pro-tip information access

**Features:** macOS Compatibility

**In-app purchases:** none


### LSI Calculator

[App page](https://appshunter.io/ios/app/lsi-calculator/id1233049990)

This app provides tools and educational resources to help users manage water systems, focusing on eco-friendly treatments for pools and spas. It aims to make water maintenance accessible to everyone, regardless of their experience level.

**Highlights:** Water science education, Pool and spa water management, Eco-friendly treatment guidance, NSF/ANSI Certified product information, Tools for water system management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AquaLXP free?

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

### Is LSI Calculator free?

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

### Do AquaLXP or LSI Calculator have ads?

Neither AquaLXP nor LSI Calculator shows ads.

### Which is updated more often, AquaLXP or LSI Calculator?

AquaLXP ships an update every 3 months, and LSI Calculator every 2 months. Most recently, AquaLXP was updated on September 16, 2026 and LSI Calculator on June 11, 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.*