# Gear Design vs Computer Science Dictionary

The clearest difference is price: Computer Science Dictionary at Free against Gear Design's $2.99. Computer Science Dictionary also leads on rating (4.8 vs 1.5) and ratings volume (9 vs 2). Gear Design's advantage is in-app purchases (none vs 1) and iOS requirement (9.3 vs 13.0). On update cadence and ads there is nothing between them.

Computer Science Dictionary is free to download; Gear Design costs $2.99 up front. Computer Science Dictionary sells 1 one-off in-app purchase. Gear Design asks for nothing beyond the download.

Computer Science Dictionary holds the better App Store score, 4.8 against 1.5. Both are backed by a comparable volume of ratings — 2 and 9 respectively.

Gear Design ships an update every 12 months, Computer Science Dictionary every 16 months. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Gear Design | Computer Science Dictionary |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/gear-design/id1136191442/reviews) | **[4.8 (9 ratings)](https://appshunter.io/ios/app/computer-science-dictionary/id6714465469/reviews)** |
| Number of ratings | 2 | **9** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 16 months |
| Monetization | Paid | **Free** |
| Size | 38 MB | 68 MB |
| Requires iOS | **9.3** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI](https://appshunter.io/developer/914295588) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### Gear Design

[App page](https://appshunter.io/ios/app/gear-design/id1136191442)

Design involute gears with a CAD interface, allowing visual assessment through touch gestures. Generate and export STL data for 3D printing and perform tooth bending strength analysis with PDF sharing.

**Highlights:** Involute gear design, CAD interface, Touch gesture controls (zoom, rotate), STL data generation, Email export, Tooth bending strength analysis, PDF sharing

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

**In-app purchases:** none


### Computer Science Dictionary

[App page](https://appshunter.io/ios/app/computer-science-dictionary/id6714465469)

This app offers a comprehensive offline dictionary for computer science and engineering students, featuring over 4,200 terms, formulas, historical insights, and quizzes. Explore computer history, save favorite terms, and test your knowledge with interactive challenges.

**Highlights:** 4,200+ Computer Engineering terms, Visual representations of formulas, Comprehensive computer history timeline, Challenging quizzes, Autoplay audio definitions, Community word contributions, Save favorite terms

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Purchase | $6.99 | one-time |


## Frequently asked questions

### Is Gear Design free?

Gear Design costs $2.99, with no in-app purchases.

### Is Computer Science Dictionary free?

Computer Science Dictionary is free to download, with in-app purchases available.

### Which has better reviews, Gear Design or Computer Science Dictionary?

Computer Science Dictionary is rated higher. Gear Design averages 1.5 out of 5 from 2 ratings, while Computer Science Dictionary averages 4.8 from 9 ratings.

### Do Gear Design or Computer Science Dictionary have ads?

Neither Gear Design nor Computer Science Dictionary shows ads.

### Which is updated more often, Gear Design or Computer Science Dictionary?

Gear Design ships an update every 12 months, and Computer Science Dictionary every 16 months. Most recently, Gear Design was updated on October 9, 2026 and Computer Science Dictionary on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*