# Electrikit vs Opamp tools

The clearest difference is in-app purchases: Electrikit at none against Opamp tools's 1. Opamp tools's advantage is update cadence (every 12 months vs every 59 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Opamp tools sells 1 one-off in-app purchase. Electrikit asks for nothing beyond the download.

Electrikit ships an update every 59 months, Opamp tools every 12 months. The most recent releases landed on September 17, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Electrikit | Opamp tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/electrikit/id1438439803/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 59 months | **Every 12 months** |
| Monetization | Free | — |
| Size | 30 MB | 4 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [B&K Precision](https://appshunter.io/developer/400501706) | [Siu Yuen Ho](https://appshunter.io/developer/814088527) |

## What reviewers say

### Electrikit

[App page](https://appshunter.io/ios/app/electrikit/id1438439803)

This app provides a comprehensive suite of calculators for power electronics. It assists electronics enthusiasts, students, and professionals in solving complex circuit calculations with an intuitive interface. Essential for anyone working with electronic circuits and devices.

**Highlights:** Power Calculators, Delta-Wye Transformation, AWG Size Calculator, Voltage Drop Calculator, Resistor Code Calculator, LED Info, Dark/Light Theme

**Features:** macOS Compatibility

**In-app purchases:** none


### Opamp tools

[App page](https://appshunter.io/ios/app/opamp-tools/id1616271826)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock pro feature | $1.99 | one-time |


## Frequently asked questions

### Is Electrikit free?

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

### Is Opamp tools free?

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

### Do Electrikit or Opamp tools have ads?

Neither Electrikit nor Opamp tools shows ads.

### Which is updated more often, Electrikit or Opamp tools?

Electrikit ships an update every 59 months, and Opamp tools every 12 months. Most recently, Electrikit was updated on September 17, 2026 and Opamp tools on May 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.*