# Mechanical Engineer vs Chronos Clock App

The clearest difference is rating: Chronos Clock App at 5.0 against Mechanical Engineer's 4.4. Chronos Clock App also leads on in-app purchases (none vs 3) and update cadence (every 3 weeks vs every 2 months). Mechanical Engineer's advantage is ratings volume (8 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. Mechanical Engineer sells 3 in-app purchases, starting at $0.99 per month. Chronos Clock App asks for nothing beyond the download.

Chronos Clock App holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 8 and 2 respectively.

Mechanical Engineer ships an update every 2 months, Chronos Clock App every 3 weeks. The most recent releases landed on September 26, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Mechanical Engineer | Chronos Clock App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (8 ratings)](https://appshunter.io/ios/app/mechanical-engineer/id327055140/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chronos-clock-app/id1600976190/reviews)** |
| Number of ratings | **8** | 2 |
| Positive reviews | 30.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 27 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Stapp Construction, Inc.](https://appshunter.io/developer/1596317041) |

## What reviewers say

### Mechanical Engineer

[App page](https://appshunter.io/ios/app/mechanical-engineer/id327055140)

This app provides over 300 essential mechanical engineering formulas across various domains. It allows users to calculate, save, compare, and share results, aiding in project optimization and decision-making. Users can access a limited number of calculations for free, with a subscription unlocking full functionality.

**Highlights:** Over 300 mechanical engineering formulas, Covers diverse engineering domains, Save and compare formula results, Share calculation outcomes, Intuitive and practical interface, Regular updates based on user input

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Pro Quarterly | $0.99 | per 3 months |
| Pro Yearly | $2.99 | per year |


### Chronos Clock App

[App page](https://appshunter.io/ios/app/chronos-clock-app/id1600976190)

This app allows users to create field logs and submit total hours worked on specific projects. It is designed exclusively for Stapp Construction employees to streamline time tracking and project hour submission.

**Highlights:** Create field logs, Submit total hours worked, Track hours per project, Exclusive for Stapp Construction

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mechanical Engineer free?

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

### Is Chronos Clock App free?

Chronos Clock App is free to download, with no in-app purchases.

### Which has better reviews, Mechanical Engineer or Chronos Clock App?

Chronos Clock App is rated higher. Mechanical Engineer averages 4.4 out of 5 from 8 ratings, while Chronos Clock App averages 5.0 from 2 ratings.

### Do Mechanical Engineer or Chronos Clock App have ads?

Neither Mechanical Engineer nor Chronos Clock App shows ads.

### Which is updated more often, Mechanical Engineer or Chronos Clock App?

Mechanical Engineer ships an update every 2 months, and Chronos Clock App every 3 weeks. Most recently, Mechanical Engineer was updated on September 26, 2026 and Chronos Clock App on June 4, 2026.

---

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