# Mechanical Engineer vs Sekreter

The clearest difference is update cadence: Sekreter at every 2 weeks against Mechanical Engineer's every 2 months. Mechanical Engineer's advantage is iOS requirement (17.6 vs 27.0). On price, ads, in-app purchases 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 and Sekreter sells 3 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Mechanical Engineer ships an update every 2 months, Sekreter every 2 weeks. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Mechanical Engineer | Sekreter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (8 ratings)](https://appshunter.io/ios/app/mechanical-engineer/id327055140/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 29.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 25 MB |
| Requires iOS | **17.6** | 27.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [ALP ALPSOY](https://appshunter.io/developer/6795219736) |

## 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 |


### Sekreter

[App page](https://appshunter.io/ios/app/sekreter/id6795219734)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $5.99 | per 7 days |
| Premium Monthly | $14.99 | per month |
| Premium Yearly | $149.99 | per year |


## Frequently asked questions

### Is Mechanical Engineer free?

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

### Is Sekreter free?

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

### Do Mechanical Engineer or Sekreter have ads?

Neither Mechanical Engineer nor Sekreter shows ads.

### Which is updated more often, Mechanical Engineer or Sekreter?

Mechanical Engineer ships an update every 2 months, and Sekreter every 2 weeks. Most recently, Mechanical Engineer was updated on October 14, 2026 and Sekreter on October 1, 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.*