# Plutocalc+ Water vs vPass VMS

The clearest difference is price: vPass VMS at Free against Plutocalc+ Water's $4.99. Plutocalc+ Water's advantage is update cadence (every 3 months vs every 10 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

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

Plutocalc+ Water ships an update every 3 months, vPass VMS every 10 months. The most recent releases landed on August 29, 2026 and May 15, 2026 respectively.

## The numbers

| Metric | Plutocalc+ Water | vPass VMS |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/plutocalc-plus-water/id1142058236/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | Paid | — |
| Size | 4 MB | 92 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Peig](https://appshunter.io/developer/1142058235) | [Systems Control Integration SA CC](https://appshunter.io/developer/1620162420) |

## 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


### vPass VMS

[App page](https://appshunter.io/ios/app/vpass-vms/id1620162418)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Plutocalc+ Water free?

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

### Is vPass VMS free?

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

### Do Plutocalc+ Water or vPass VMS have ads?

Neither Plutocalc+ Water nor vPass VMS shows ads.

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

Plutocalc+ Water ships an update every 3 months, and vPass VMS every 10 months. Most recently, Plutocalc+ Water was updated on August 29, 2026 and vPass VMS on May 15, 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.*