# eqSolver vs Mechanical Formula

The clearest difference is in-app purchases: eqSolver at none against Mechanical Formula's 1. eqSolver also leads on rating (5.0 vs 4.7) and iOS requirement (9.0 vs 13.0). Mechanical Formula's advantage is update cadence (every 4 months vs every 69 months) and ratings volume (34 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. Mechanical Formula sells 1 one-off in-app purchase. eqSolver asks for nothing beyond the download.

eqSolver holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Mechanical Formula has 34 ratings behind it against 2, so its average is the more settled of the two.

eqSolver ships an update every 69 months, Mechanical Formula every 4 months. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | eqSolver | Mechanical Formula |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/eqsolver/id1090792086/reviews)** | [4.7 (34 ratings)](https://appshunter.io/ios/app/mechanical-formula/id1668948373/reviews) |
| Number of ratings | 2 | **34** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 69 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 12 MB | 42 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kurt Gramoll](https://appshunter.io/developer/782218116) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## What reviewers say

### eqSolver

[App page](https://appshunter.io/ios/app/eqsolver/id1090792086)

This app solves simultaneous linear equations quickly and efficiently. It offers a matrix-style input for decimal or exponential numbers, with an option for symmetric equations to simplify input. Ideal for math and engineering students and professionals.

**Highlights:** Solves simultaneous linear equations, Matrix-style input, Decimal and exponential number support, Symmetric equation option, Tablet and phone compatibility

**Features:** macOS Compatibility

**In-app purchases:** none


### Mechanical Formula

[App page](https://appshunter.io/ios/app/mechanical-formula/id1668948373)

This app provides over 200 essential mechanical engineering formulas and calculations in a user-friendly tool. It's designed to simplify complex concepts and speed up problem-solving for students, professionals, and educators.

**Highlights:** 200+ mechanical engineering formulas, Instant calculations, Intuitive interface, Real-world application explanations, Exam preparation aid, Lifetime Premium option

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is eqSolver free?

eqSolver is free to download, with no in-app purchases.

### Is Mechanical Formula free?

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

### Which has better reviews, eqSolver or Mechanical Formula?

eqSolver is rated higher. eqSolver averages 5.0 out of 5 from 2 ratings, while Mechanical Formula averages 4.7 from 34 ratings.

### Do eqSolver or Mechanical Formula have ads?

Neither eqSolver nor Mechanical Formula shows ads.

### Which is updated more often, eqSolver or Mechanical Formula?

eqSolver ships an update every 69 months, and Mechanical Formula every 4 months. Most recently, eqSolver was updated on September 9, 2026 and Mechanical Formula on September 19, 2026.

---

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