# Engineering Calculator vs IPF CONNECT

The clearest difference is ads: IPF CONNECT at none against Engineering Calculator's shown. Engineering Calculator's advantage is update cadence (monthly vs every 16 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Engineering Calculator ships an update monthly, IPF CONNECT every 16 months. The most recent releases landed on September 23, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Engineering Calculator | IPF CONNECT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/engineering-calculator/id1395510375/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 16 months |
| Monetization | Ad-supported | — |
| Size | 1 MB | 29 MB |
| Requires iOS | 12.2 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masato Kanazawa](https://appshunter.io/developer/1110570349) | [IPF corporation.](https://appshunter.io/developer/1616075708) |

## What reviewers say

### Engineering Calculator

[App page](https://appshunter.io/ios/app/engineering-calculator/id1395510375)

This utility app helps users convert units and calculate tips, primarily for those in the US. It operates offline and aims for minimal user interaction to provide quick results. Useful for avoiding misunderstandings in business dealings due to unit differences.

**Highlights:** Unit conversion, Tip calculation, Offline functionality, Minimalist interface, Business negotiation aid

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

**In-app purchases:** none


### IPF CONNECT

[App page](https://appshunter.io/ios/app/ipf-connect/id1616782184)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Engineering Calculator free?

Engineering Calculator is free to download, with no in-app purchases.

### Is IPF CONNECT free?

IPF CONNECT is free to download, with no in-app purchases.

### Do Engineering Calculator or IPF CONNECT have ads?

Engineering Calculator shows ads; IPF CONNECT does not.

### Which is updated more often, Engineering Calculator or IPF CONNECT?

Engineering Calculator ships an update monthly, and IPF CONNECT every 16 months. Most recently, Engineering Calculator was updated on September 23, 2026 and IPF CONNECT on September 29, 2026.

---

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