# Electronics Toolkit calc vs CalcEngineer

The clearest difference is price: CalcEngineer at Free against Electronics Toolkit calc's $4.99. CalcEngineer also leads on update cadence (every 2 days vs every 4 months). Electronics Toolkit calc's advantage is iOS requirement (13.0 vs 17). On ads, in-app purchases and device support there is nothing between them.

CalcEngineer is free to download; Electronics Toolkit calc costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electronics Toolkit calc ships an update every 4 months, CalcEngineer every 2 days. The most recent releases landed on October 1, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Electronics Toolkit calc | CalcEngineer |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calcengineer/id6748969344/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 25 MB | 10 MB |
| Requires iOS | **13.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) | [Justin Bush](https://appshunter.io/developer/1828308327) |

## What reviewers say

### Electronics Toolkit calc

[App page](https://appshunter.io/ios/app/electronics-toolkit-calc/id6473828034)

**Features:** macOS Compatibility

**In-app purchases:** none


### CalcEngineer

[App page](https://appshunter.io/ios/app/calcengineer/id6748969344)

This app provides professional engineering calculations for compressed air systems. It helps engineers and technicians determine CFM requirements, size compressors and tanks, and analyze pressure drops for optimized pneumatic systems.

**Highlights:** CFM Calculator, Compressor & Tank Sizing, Pressure Drop Analysis, Flow Velocity & Pipe Sizing, Multiple CFM Entries, General Engineering Calculator Suite

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Electronics Toolkit calc free?

Electronics Toolkit calc costs $4.99, with no in-app purchases.

### Is CalcEngineer free?

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

### Do Electronics Toolkit calc or CalcEngineer have ads?

Neither Electronics Toolkit calc nor CalcEngineer shows ads.

### Which is updated more often, Electronics Toolkit calc or CalcEngineer?

Electronics Toolkit calc ships an update every 4 months, and CalcEngineer every 2 days. Most recently, Electronics Toolkit calc was updated on October 1, 2026 and CalcEngineer on October 15, 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.*