# LSI Pool and Spa Calculator vs ShoreSet

The clearest difference is in-app purchases: ShoreSet at none against LSI Pool and Spa Calculator's 2. ShoreSet also leads on iOS requirement (10.0 vs 17.6). LSI Pool and Spa Calculator's advantage is update cadence (every 5 weeks vs every 12 months). On price, ads and device support there is nothing between them.

Both are free to download. LSI Pool and Spa Calculator sells 2 in-app purchases, starting at $1.99 per month. ShoreSet asks for nothing beyond the download.

LSI Pool and Spa Calculator ships an update every 5 weeks, ShoreSet every 12 months. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | LSI Pool and Spa Calculator | ShoreSet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lsi-pool-and-spa-calculator/id373769371/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 78.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 7 MB |
| Requires iOS | 17.6 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Verosocial Studio](https://appshunter.io/developer/354566841) | [Waterside Leisure UK Ltd](https://appshunter.io/developer/1761534696) |

## What reviewers say

### LSI Pool and Spa Calculator

[App page](https://appshunter.io/ios/app/lsi-pool-and-spa-calculator/id373769371)

This app helps pool and spa professionals organize water testing readings, customer details, and service visits. It calculates the Langelier Saturation Index, tracks historical data, and generates service reports for clients.

**Highlights:** Calculate LSI from water parameters, Track customer and site details, Log service visits and chemical actions, View historical data and charts, Generate service reports, Schedule future visits

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LSI Calculators pro Monthly | $1.99 | per month |
| LSI Calculators pro lifetime | $14.99 | one-time |


### ShoreSet

[App page](https://appshunter.io/ios/app/shoreset/id6615074270)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LSI Pool and Spa Calculator free?

LSI Pool and Spa Calculator is free to download, with in-app purchases available.

### Is ShoreSet free?

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

### Do LSI Pool and Spa Calculator or ShoreSet have ads?

Neither LSI Pool and Spa Calculator nor ShoreSet shows ads.

### Which is updated more often, LSI Pool and Spa Calculator or ShoreSet?

LSI Pool and Spa Calculator ships an update every 5 weeks, and ShoreSet every 12 months. Most recently, LSI Pool and Spa Calculator was updated on November 6, 2026 and ShoreSet on October 30, 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.*