# Volumetric Method Simulator vs MPD SmartCards

The clearest difference is price: MPD SmartCards at Free against Volumetric Method Simulator's $19.99. MPD SmartCards also leads on update cadence (every 3 weeks vs every 26 months). Volumetric Method Simulator's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.1). On ads and device support there is nothing between them.

MPD SmartCards is free to download; Volumetric Method Simulator costs $19.99 up front. MPD SmartCards sells 2 in-app purchases, starting at $3.99 per month. Volumetric Method Simulator asks for nothing beyond the download.

Volumetric Method Simulator ships an update every 26 months, MPD SmartCards every 3 weeks. The most recent releases landed on October 22, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Volumetric Method Simulator | MPD SmartCards |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mpd-smartcards/id6759011027/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 20 MB | 48 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Carlos Moura](https://appshunter.io/developer/407501202) | [Drillsoft LLC](https://appshunter.io/developer/1787962403) |

## What reviewers say

### Volumetric Method Simulator

[App page](https://appshunter.io/ios/app/volumetric-method-simulator/id1475024726)

**Features:** Vision Pro support

**In-app purchases:** none


### MPD SmartCards

[App page](https://appshunter.io/ios/app/mpd-smartcards/id6759011027)

This learning app uses interactive flashcards to help users master Managed Pressure Drilling (MPD) concepts. It covers key topics, equipment, and scenarios to improve understanding and retention for professionals and students. The app offers bite-sized lessons for convenient learning.

**Highlights:** Interactive flashcards, Key MPD concepts, Pressure principles, Equipment functions, Real-world scenarios, Exam preparation support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Access | $3.99 | per month |
| Expert Annual Pass (Best Value) | $24.99 | per year |


## Frequently asked questions

### Is Volumetric Method Simulator free?

Volumetric Method Simulator costs $19.99, with no in-app purchases.

### Is MPD SmartCards free?

MPD SmartCards is free to download, with in-app purchases available.

### Do Volumetric Method Simulator or MPD SmartCards have ads?

Neither Volumetric Method Simulator nor MPD SmartCards shows ads.

### Which is updated more often, Volumetric Method Simulator or MPD SmartCards?

Volumetric Method Simulator ships an update every 26 months, and MPD SmartCards every 3 weeks. Most recently, Volumetric Method Simulator was updated on October 22, 2026 and MPD SmartCards on October 23, 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.*