# EnginPrep vs Engineering Formulas

The clearest difference is update cadence: EnginPrep at every 3 weeks against Engineering Formulas's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. EnginPrep 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.

EnginPrep ships an update every 3 weeks, Engineering Formulas every 2 months. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | EnginPrep | Engineering Formulas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (192 ratings)](https://appshunter.io/ios/app/enginprep-fe-exam-prep/id1519694401/reviews)** | — |
| Number of ratings | **192** | — |
| Positive reviews | 61.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Freemium | — |
| Size | 45 MB | 45 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | **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

### EnginPrep

[App page](https://appshunter.io/ios/app/enginprep-fe-exam-prep/id1519694401)

Prepare for the FE Civil and Mechanical exams with daily practice problems and comprehensive review lessons. Track your progress, identify weak spots, and take timed mock exams. Sync your learning across devices with a single account.

**Highlights:** Daily FE practice problems, Worked solutions for all problems, Topic-specific content review, Timed mock exams, Weak spot identification drills, Progress tracking and syncing, Cross-device compatibility

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Content | $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 EnginPrep free?

EnginPrep 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 EnginPrep or Engineering Formulas have ads?

Neither EnginPrep nor Engineering Formulas shows ads.

### Which is updated more often, EnginPrep or Engineering Formulas?

EnginPrep ships an update every 3 weeks, and Engineering Formulas every 2 months. Most recently, EnginPrep was updated on November 3, 2026 and Engineering Formulas on November 11, 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.*