# Blocklist vs ProEngineer Calculator

The clearest difference is price: Blocklist at Free against ProEngineer Calculator's $19.99. ProEngineer Calculator's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 15 months). On ads and device support there is nothing between them.

Blocklist is free to download; ProEngineer Calculator costs $19.99 up front. Blocklist sells 1 one-off in-app purchase. ProEngineer Calculator asks for nothing beyond the download.

Blocklist ships an update every 15 months, ProEngineer Calculator monthly. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Blocklist | ProEngineer Calculator |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/proengineer-calculator/id6752825468/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 15 months | **Monthly** |
| Monetization | — | Paid |
| Size | 1 MB | 46 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [小康 刘](https://appshunter.io/developer/438044743) | [Margaret Hayes](https://appshunter.io/developer/1840974547) |

## What reviewers say

### Blocklist

[App page](https://appshunter.io/ios/app/blocklist/id6465749799)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | one-time |


### ProEngineer Calculator

[App page](https://appshunter.io/ios/app/proengineer-calculator/id6752825468)

This app provides engineers and students with a comprehensive suite of tools for complex calculations across various engineering disciplines. It offers features for stoichiometry, thermodynamics, electrical, and fluid mechanics, along with process visualization and project management aids.

**Highlights:** Stoichiometry & Material Balances, Thermodynamics Calculations, Electrical Calculations, Flow Mechanics Calculator, Process Timeline, Consultant Directory

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

**In-app purchases:** none


## Frequently asked questions

### Is Blocklist free?

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

### Is ProEngineer Calculator free?

ProEngineer Calculator costs $19.99, with no in-app purchases.

### Do Blocklist or ProEngineer Calculator have ads?

Neither Blocklist nor ProEngineer Calculator shows ads.

### Which is updated more often, Blocklist or ProEngineer Calculator?

Blocklist ships an update every 15 months, and ProEngineer Calculator monthly. Most recently, Blocklist was updated on October 1, 2026 and ProEngineer Calculator on October 4, 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.*