# Electrical Formulas Quiz vs Engineering Formulas

The clearest difference is device support: Engineering Formulas at 3 against Electrical Formulas Quiz's 1. Engineering Formulas also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Electrical Formulas Quiz sells 3 in-app purchases, starting at $7.99 per 7 days and Engineering Formulas sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Electrical Formulas Quiz ships an update every 3 months, Engineering Formulas every 2 months. The most recent releases landed on September 15, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | Electrical Formulas Quiz | Engineering Formulas |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 10 MB | 45 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) | [Mobin Akhter](https://appshunter.io/developer/1812505286) |

## What reviewers say

### Electrical Formulas Quiz

[App page](https://appshunter.io/ios/app/electrical-formulas-quiz/id6754638500)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week | $7.99 | per 7 days |
| Month | $19.99 | per month |
| Year | $29.99 | per year |


### Engineering Formulas

[App page](https://appshunter.io/ios/app/engineering-formulas-engiref/id6758258119)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $29.99 | per year |
| Lifetime Access | $54.99 | one-time |


## Frequently asked questions

### Is Electrical Formulas Quiz free?

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

### Is Engineering Formulas free?

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

### Do Electrical Formulas Quiz or Engineering Formulas have ads?

Neither Electrical Formulas Quiz nor Engineering Formulas shows ads.

### Which is updated more often, Electrical Formulas Quiz or Engineering Formulas?

Electrical Formulas Quiz ships an update every 3 months, and Engineering Formulas every 2 months. Most recently, Electrical Formulas Quiz was updated on September 15, 2026 and Engineering Formulas on August 18, 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.*