# ProEngineer Calculator vs Solemnace

The clearest difference is price: Solemnace at Free against ProEngineer Calculator's $19.99. Solemnace also leads on update cadence (every 9 days vs monthly). ProEngineer Calculator's advantage is rating (5.0 vs 1.0) and iOS requirement (15.1 vs 26.2). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Solemnace is free to download; ProEngineer Calculator costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ProEngineer Calculator holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

ProEngineer Calculator ships an update monthly, Solemnace every 9 days. The most recent releases landed on October 4, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | ProEngineer Calculator | Solemnace |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/proengineer-calculator/id6752825468/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/solemnace/id6759083219/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Paid | **Free** |
| Size | 46 MB | 33 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Margaret Hayes](https://appshunter.io/developer/1840974547) | [renesanse, LLC](https://appshunter.io/developer/1876759763) |

## What reviewers say

### 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


### Solemnace

[App page](https://appshunter.io/ios/app/solemnace/id6759083219)

Experience lightning-fast AI interactions and build a visual knowledge tree for in-depth research. Enjoy private, on-device voice communication and connect to any AI provider for ultimate freedom.

**Highlights:** High-speed AI responses, Complex table generation, Visual knowledge tree navigation, On-device voice mode, Connect to any AI provider, Local AI server integration, User data privacy

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ProEngineer Calculator free?

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

### Is Solemnace free?

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

### Which has better reviews, ProEngineer Calculator or Solemnace?

ProEngineer Calculator is rated higher. ProEngineer Calculator averages 5.0 out of 5 from 1 ratings, while Solemnace averages 1.0 from 1 ratings.

### Do ProEngineer Calculator or Solemnace have ads?

Neither ProEngineer Calculator nor Solemnace shows ads.

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

ProEngineer Calculator ships an update monthly, and Solemnace every 9 days. Most recently, ProEngineer Calculator was updated on October 4, 2026 and Solemnace on October 11, 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.*