# Gflex Control vs Engineering Calculator

The clearest difference is price: Gflex Control at Free against Engineering Calculator's $0.99. Engineering Calculator's advantage is update cadence (every 2 days vs weekly) and chart position (#197 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Gflex Control is free to download; Engineering Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Gflex Control ships an update weekly, Engineering Calculator every 2 days. The most recent releases landed on September 22, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Gflex Control | Engineering Calculator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Best chart rank | — | **#197** |
| Size | 48 MB | 21 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GCODE ILERI TEKNOLOJI YAZILIM ANONIM SIRKETI](https://appshunter.io/developer/1534531919) | [Yasin Demir](https://appshunter.io/developer/1838444361) |

## What reviewers say

### Gflex Control

[App page](https://appshunter.io/ios/app/gflex-control/id6740334491)

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

**In-app purchases:** none


### Engineering Calculator

[App page](https://appshunter.io/ios/app/engineering-calculator/id6761010498)

**Currently charting:** #197 Top Paid · Productivity (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gflex Control free?

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

### Is Engineering Calculator free?

Engineering Calculator costs $0.99, with no in-app purchases.

### Do Gflex Control or Engineering Calculator have ads?

Neither Gflex Control nor Engineering Calculator shows ads.

### Which is updated more often, Gflex Control or Engineering Calculator?

Gflex Control ships an update weekly, and Engineering Calculator every 2 days. Most recently, Gflex Control was updated on September 22, 2026 and Engineering Calculator on September 16, 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.*