# Sparky's CircKit vs E

The clearest difference is in-app purchases: E at none against Sparky's CircKit's 4. Sparky's CircKit's advantage is price ($9.99 vs $14.99) and review sentiment (92% vs 83%). On update cadence, ads, monetization model and device support there is nothing between them.

Sparky's CircKit costs $9.99 and E $14.99 up front. Sparky's CircKit sells 4 one-off in-app purchases. E asks for nothing beyond the download.

Sparky's CircKit ships an update every 9 days, E fortnightly. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Sparky's CircKit | E |
| --- | --- | --- |
| Price | **$9.99** | $14.99 |
| Positive reviews | **91.7% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Monetization | Paid | Paid |
| Size | 48 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

### Sparky's CircKit

[App page](https://appshunter.io/ios/app/sparkys-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 Sparky's CircKit free?

Sparky's CircKit costs $9.99, and also offers in-app purchases.

### Is E free?

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

### Do Sparky's CircKit or E have ads?

Neither Sparky's CircKit nor E shows ads.

### Which is updated more often, Sparky's CircKit or E?

Sparky's CircKit ships an update every 9 days, and E fortnightly. Most recently, Sparky's CircKit was updated on September 22, 2026 and E on September 21, 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.*