# CircKit vs E

The clearest difference is price: CircKit at Free against E's $14.99. CircKit also leads on iOS requirement (17.0 vs 26.0). E's advantage is in-app purchases (none vs 4). On review sentiment, update cadence, ads and monetization model there is nothing between them.

CircKit is free to download; E costs $14.99 up front. CircKit sells 4 one-off in-app purchases. E asks for nothing beyond the download.

CircKit ships an update weekly, E fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | CircKit | E |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Positive reviews | **84.6% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Paid | Paid |
| Size | 50 MB | 55 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [The Sparky](https://appshunter.io/developer/1747077864) | [Snappy Appz Inc.](https://appshunter.io/developer/375591377) |

## What reviewers say

### CircKit

[App page](https://appshunter.io/ios/app/circkit/id6612010334)

This app provides essential electrical calculations and reference tools for electricians, contractors, and engineers. It offers advanced calculators for motor sizing, voltage drop, and more, alongside a professional reference library and built-in productivity tools.

**Highlights:** Motor sizing and protection calculators, Voltage drop calculator, Transformer sizing, Pipe and box fill calculators, Professional reference library, Integrated notes app, Unit converter

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| $1 Tip | $0.99 | one-time |
| $5 Tip | $4.99 | one-time |
| $10 Tip | $9.99 | one-time |
| $20 Tip | $19.99 | one-time |


### E

[App page](https://appshunter.io/ios/app/e-calc-master-2024/id6739976962)

This app provides electricians and engineers with precise calculations based on the 2024 Canadian Electrical Code. It offers advanced tools for wire sizing, conduit fill, motor loads, and voltage drop, streamlining complex electrical work in the field or office.

**Highlights:** Code-compliant wire sizing, Conduit fill calculations, Motor and transformer tools, Voltage drop analysis, Residential service sizing, Panel legend creation, Integrated unit converter

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

**In-app purchases:** none


## Frequently asked questions

### Is CircKit free?

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

### Is E free?

E costs $14.99, with no in-app purchases.

### Do CircKit or E have ads?

Neither CircKit nor E shows ads.

### Which is updated more often, CircKit or E?

CircKit ships an update weekly, and E fortnightly. Most recently, CircKit was updated on October 24, 2026 and E on October 24, 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.*