# Electrical Calculator vs LockCodes

The clearest difference is price: LockCodes at Free against Electrical Calculator's $3.99. LockCodes also leads on update cadence (every 6 weeks vs every 4 months). Electrical Calculator's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

LockCodes is free to download; Electrical Calculator costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electrical Calculator ships an update every 4 months, LockCodes every 6 weeks. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Electrical Calculator | LockCodes |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.6 (462 ratings)](https://appshunter.io/ios/app/electrical-calculator/id495478153/reviews)** | — |
| Number of ratings | **462** | — |
| Positive reviews | 53.3% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 18 MB | 13 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Sebastian Kumor](https://appshunter.io/developer/1039502133) |

## What reviewers say

### Electrical Calculator

[App page](https://appshunter.io/ios/app/electrical-calculator/id495478153)

This app provides over 65 essential electrical calculation tools and formulas for engineers, students, and professionals. It supports both USCS and SI units and includes features like resistor color code conversion and upgraded voltage drop calculations aligned with industry standards.

**Highlights:** Over 65 electrical calculation tools, Resistor color code calculators, Upgraded voltage drop calculations, Wire size calculations, Series/parallel circuit calculations, Energy cost calculator, Unit conversions

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great app, useful for years
- 👍 Good app
- 👍 Brilliant Program
- 👍 Essential shortcut for professionals
- 👍 Works great

**What reviewers complain about**

-  annoyance: popup advising update
- 💸 Paid for calculators, then asked for more
- 💸 Lost money
- 💸 Costs extra for full content
- 📏 No impedance calculators

**Reported bugs**

- Annoying popup for app update
- Converter not working
- App not working on older iPhone models

**Requested features**

- Include impedance calculators
- Improve metric region compatibility for AWG cables


### LockCodes

[App page](https://appshunter.io/ios/app/lockcodes-manage-access/id6756318892)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Electrical Calculator free?

Electrical Calculator costs $3.99, with no in-app purchases.

### Is LockCodes free?

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

### Do Electrical Calculator or LockCodes have ads?

LockCodes shows ads; Electrical Calculator does not.

### Which is updated more often, Electrical Calculator or LockCodes?

Electrical Calculator ships an update every 4 months, and LockCodes every 6 weeks. Most recently, Electrical Calculator was updated on October 7, 2026 and LockCodes on October 4, 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.*