# LSI Pool and Spa Calculator vs iVerify Basic

The clearest difference is price: LSI Pool and Spa Calculator at Free against iVerify Basic's $0.99. LSI Pool and Spa Calculator also leads on review sentiment (75% vs 42%) and rating (5.0 vs 4.6). iVerify Basic's advantage is in-app purchases (none vs 2) and ratings volume (2.4K vs 1). On ads and device support there is nothing between them.

LSI Pool and Spa Calculator is free to download; iVerify Basic costs $0.99 up front. LSI Pool and Spa Calculator sells 2 in-app purchases, starting at $1.99 per month. iVerify Basic asks for nothing beyond the download.

LSI Pool and Spa Calculator holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: iVerify Basic has 2.4K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 75% of LSI Pool and Spa Calculator's written reviews are positive against 42% of iVerify Basic's.

LSI Pool and Spa Calculator ships an update every 6 weeks, iVerify Basic every 3 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | LSI Pool and Spa Calculator | iVerify Basic |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lsi-pool-and-spa-calculator/id373769371/reviews)** | [4.6 (2.4K ratings)](https://appshunter.io/ios/app/iverify-basic/id1466120520/reviews) |
| Number of ratings | 1 | **2.4K** |
| Positive reviews | **75.0% of reviews** | 41.9% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Best chart rank | — | **#8** |
| Size | 7 MB | 55 MB |
| Requires iOS | 17.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Verosocial Studio](https://appshunter.io/developer/354566841) | [iVerify](https://appshunter.io/developer/1700333884) |

## What reviewers say

### LSI Pool and Spa Calculator

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

Easily calculate and track the Langelier Saturation Index for your pool water. Maintain optimal water balance for a healthy and safe swimming environment. Supports multiple units and saves your calculations over time.

**Highlights:** LSI Calculation, Water Chemistry Tracking, Email Calculations, CSV Export, Offline Use, Universal App Support

**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 |


### iVerify Basic

[App page](https://appshunter.io/ios/app/iverify-basic/id1466120520)

**Currently charting:** #8 Top Paid · Utilities, #44 Top Paid (US App Store)

This app provides basic device security scanning to detect vulnerabilities and threats. It offers a glimpse into advanced security features for individuals prioritizing their digital safety.

**Highlights:** Device security scanning, Vulnerability detection, Threat awareness, Proactive threat measures, Basic security toolkit

**Features:** Safari Extension, Vision Pro support

**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 iVerify Basic free?

iVerify Basic costs $0.99, with no in-app purchases.

### Which has better reviews, LSI Pool and Spa Calculator or iVerify Basic?

LSI Pool and Spa Calculator is rated higher. LSI Pool and Spa Calculator averages 5.0 out of 5 from 1 ratings, while iVerify Basic averages 4.6 from 2.4K ratings.

### Do LSI Pool and Spa Calculator or iVerify Basic have ads?

Neither LSI Pool and Spa Calculator nor iVerify Basic shows ads.

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

LSI Pool and Spa Calculator ships an update every 6 weeks, and iVerify Basic every 3 weeks. Most recently, LSI Pool and Spa Calculator was updated on October 23, 2026 and iVerify Basic on October 25, 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.*