# LSI Calculator vs HASA water

LSI Calculator and HASA water are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | LSI Calculator | HASA water |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/lsi-calculator/id1233049990/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 52 MB | 52 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Pure Planet Science & Technology, Inc.](https://appshunter.io/developer/1234693265) | [Hasa Inc.](https://appshunter.io/developer/1713193810) |

## What reviewers say

### 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


### HASA water

[App page](https://appshunter.io/ios/app/hasa-water/id6473078202)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LSI Calculator free?

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

### Is HASA water free?

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

### Do LSI Calculator or HASA water have ads?

Neither LSI Calculator nor HASA water shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*