# Mechanical FE Prep vs Engineering Formulas

The clearest difference is update cadence: Mechanical FE Prep at every 5 days against Engineering Formulas's every 2 months. Mechanical FE Prep also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Mechanical FE Prep sells 1 one-off in-app purchase 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.

Mechanical FE Prep ships an update every 5 days, Engineering Formulas every 2 months. The most recent releases landed on July 26, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | Mechanical FE Prep | Engineering Formulas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/mechanical-fe-prep/id1585519077/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 67 MB | 45 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [EnginPeers LLC](https://appshunter.io/developer/1368846655) | [Mobin Akhter](https://appshunter.io/developer/1812505286) |

## What reviewers say

### Mechanical FE Prep

[App page](https://appshunter.io/ios/app/mechanical-fe-prep/id1585519077)

Prepare for Mechanical Engineering courses and the Fundamentals of Engineering exam with this comprehensive mobile study tool. Access over 15 engineering topics, practice exams, and detailed test analysis to master the material and pass with confidence.

**Highlights:** 15+ Engineering topics, Practice exams, Test analysis, Flashcards, Subject review, Exam prep

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


### 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 Mechanical FE Prep free?

Mechanical FE Prep 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 Mechanical FE Prep or Engineering Formulas have ads?

Neither Mechanical FE Prep nor Engineering Formulas shows ads.

### Which is updated more often, Mechanical FE Prep or Engineering Formulas?

Mechanical FE Prep ships an update every 5 days, and Engineering Formulas every 2 months. Most recently, Mechanical FE Prep was updated on July 26, 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.*