# Plutocalc+ Water vs SolidGuide

The clearest difference is price: SolidGuide at Free against Plutocalc+ Water's $4.99. SolidGuide also leads on rating (5.0 vs 4.0) and update cadence (every 6 weeks vs every 3 months). Plutocalc+ Water's advantage is iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

SolidGuide is free to download; Plutocalc+ Water costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SolidGuide holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Plutocalc+ Water ships an update every 3 months, SolidGuide every 6 weeks. The most recent releases landed on August 29, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Plutocalc+ Water | SolidGuide |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/plutocalc-plus-water/id1142058236/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/solidguide/id1522550825/reviews)** |
| Number of ratings | 1 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 4 MB | 3 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Peig](https://appshunter.io/developer/1142058235) | [APTech Group](https://appshunter.io/developer/1009293142) |

## What reviewers say

### Plutocalc+ Water

[App page](https://appshunter.io/ios/app/plutocalc-plus-water/id1142058236)

This comprehensive engineering calculator suite offers over 100 solvers for water treatment, hydraulics, and environmental chemistry. It provides instant results with self-explanatory diagrams and internal databases, functioning completely offline. Available in multiple languages, it's designed for professionals needing precise calculations on the go.

**Highlights:** 103 solvers for water treatment and hydraulics, 2670+ calculations with instant results, Self-explanatory diagrams, Internal chemical and standards databases, 100% offline functionality, Multiple language support, Advertisement-free experience

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

**In-app purchases:** none


### SolidGuide

[App page](https://appshunter.io/ios/app/solidguide/id1522550825)

This app provides water treatment professionals with quick access to product information and essential calculators for cooling tower, boiler, and closed-loop systems. It features a user-friendly catalog, equipment details, intelligent surveys, and searchable resources like spec sheets and drawings.

**Highlights:** User-friendly product catalog, Comprehensive equipment information, Intelligent surveys, Upgraded calculators, Searchable resources (spec sheets, drawings, case studies)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Plutocalc+ Water free?

Plutocalc+ Water costs $4.99, with no in-app purchases.

### Is SolidGuide free?

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

### Which has better reviews, Plutocalc+ Water or SolidGuide?

SolidGuide is rated higher. Plutocalc+ Water averages 4.0 out of 5 from 1 ratings, while SolidGuide averages 5.0 from 3 ratings.

### Do Plutocalc+ Water or SolidGuide have ads?

Neither Plutocalc+ Water nor SolidGuide shows ads.

### Which is updated more often, Plutocalc+ Water or SolidGuide?

Plutocalc+ Water ships an update every 3 months, and SolidGuide every 6 weeks. Most recently, Plutocalc+ Water was updated on August 29, 2026 and SolidGuide on June 5, 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.*