# Focusing vs ProEngineer Calculator

The clearest difference is price: Focusing at Free against ProEngineer Calculator's $19.99. Focusing also leads on update cadence (every 10 days vs monthly). ProEngineer Calculator's advantage is in-app purchases (none vs 2). On rating, ratings volume, ads and device support there is nothing between them.

Focusing is free to download; ProEngineer Calculator costs $19.99 up front. Focusing sells 2 one-off in-app purchases. ProEngineer Calculator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Focusing against 5.0 for ProEngineer Calculator. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Focusing ships an update every 10 days, ProEngineer Calculator monthly. The most recent releases landed on September 29, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Focusing | ProEngineer Calculator |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/focusing-study-timer/id6450924766/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/proengineer-calculator/id6752825468/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Monthly |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 8 MB | 46 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [业宏 庞](https://appshunter.io/developer/1695376557) | [Margaret Hayes](https://appshunter.io/developer/1840974547) |

## What reviewers say

### Focusing

[App page](https://appshunter.io/ios/app/focusing-study-timer/id6450924766)

Boost your concentration and overcome procrastination with this minimalist timer. It uses the Pomodoro Technique to help you master your time, whether you're studying, working, or managing ADHD. Enjoy a clutter-free experience with customizable sounds and visual progress tracking.

**Highlights:** Pomodoro Technique timer, Customizable focus and break durations, Continuous auto-cycle mode, Visual progress tracker, Background operation with notifications, White noise and alarm sounds

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $0.99 | one-time |
| Timer | $0.99 | 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 Focusing free?

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

### Is ProEngineer Calculator free?

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

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

Focusing and ProEngineer Calculator are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Focusing or ProEngineer Calculator have ads?

Neither Focusing nor ProEngineer Calculator shows ads.

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

Focusing ships an update every 10 days, and ProEngineer Calculator monthly. Most recently, Focusing was updated on September 29, 2026 and ProEngineer Calculator on September 17, 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.*