# Engineering Formulas vs Structural Engineering Suite

The clearest difference is iOS requirement: Engineering Formulas at 15.1 against Structural Engineering Suite's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Engineering Formulas | Structural Engineering Suite |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 45 MB | 65 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Mobin Akhter](https://appshunter.io/developer/1812505286) | [Yuhsiu Lai](https://appshunter.io/developer/433114647) |

## What reviewers say

### 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 |


### Structural Engineering Suite

[App page](https://appshunter.io/ios/app/structural-engineering-suite/id6780693967)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Structural Learning Studio | $4.99 | one-time |
| Structural Engineer's Toolkit | $4.99 | one-time |
| All Modules Bundle | $6.99 | one-time |


## Frequently asked questions

### Is Engineering Formulas free?

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

### Is Structural Engineering Suite free?

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

### Do Engineering Formulas or Structural Engineering Suite have ads?

Neither Engineering Formulas nor Structural Engineering Suite shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*