# Electrical calculation vs Simubus

The clearest difference is update cadence: Simubus at fortnightly against Electrical calculation's every 3 months. Electrical calculation's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Electrical calculation sells 1 one-off in-app purchase and Simubus sells 3 in-app purchases, starting at $12.90 per month. Whichever you choose, the download price is not the number that matters.

Electrical calculation ships an update every 3 months, Simubus fortnightly. The most recent releases landed on August 3, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Electrical calculation | Simubus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 44 MB | 49 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shital Gorasiya](https://appshunter.io/developer/1737199158) | [Chongqing Shengniu Technology Co., Ltd](https://appshunter.io/developer/1868286779) |

## What reviewers say

### Electrical calculation

[App page](https://appshunter.io/ios/app/electrical-calculation/id6741321759)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $9.99 | one-time |


### Simubus

[App page](https://appshunter.io/ios/app/simubus/id6757686667)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Subscription | $12.90 | per month |
| Yearly Pro Subscription | $69.99 | per year |
| Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Electrical calculation free?

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

### Is Simubus free?

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

### Do Electrical calculation or Simubus have ads?

Neither Electrical calculation nor Simubus shows ads.

### Which is updated more often, Electrical calculation or Simubus?

Electrical calculation ships an update every 3 months, and Simubus fortnightly. Most recently, Electrical calculation was updated on August 3, 2026 and Simubus on September 17, 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.*