# e vs Linear Algebra Pro

The clearest difference is price: e at Free against Linear Algebra Pro's $4.99. Linear Algebra Pro's advantage is update cadence (every 4 months vs every 11 months) and review sentiment (100% vs 90%). On rating, ratings volume, ads and in-app purchases there is nothing between them.

e is free to download; Linear Algebra Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for e against 5.0 for Linear Algebra Pro. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 90% of e's written reviews are positive against 100% of Linear Algebra Pro's.

e ships an update every 11 months, Linear Algebra Pro every 4 months. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | e | Linear Algebra Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/e-spacetime-converter/id291317973/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/linear-algebra-pro/id1669762569/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 90.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 months** |
| Monetization | **Free** | Paid |
| Size | 4 MB | 8 MB |
| Requires iOS | **15.5** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Elliptics, Ltd.](https://appshunter.io/developer/289108972) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-spacetime-converter/id291317973)

Explore the universe of spacetime by converting lengths into time and vice versa. This unique calculator uses geometrized units to help you think about the world in new ways and amuse your friends. It's a fun tool for science enthusiasts and students alike.

**Highlights:** Convert length to time, Convert time to length, Geometrized units (c=1), Avoids scientific notation, Supports various input units, Educational and entertaining

**In-app purchases:** none


### Linear Algebra Pro

[App page](https://appshunter.io/ios/app/linear-algebra-pro/id1669762569)

This app provides step-by-step calculations and detailed solutions for matrix and vector operations. It's designed for students and professionals needing to solve linear algebra problems quickly and understand the underlying math.

**Highlights:** Matrix operations (addition, subtraction, multiplication), Determinant calculations (Sarrus, Laplace methods), Vector operations (addition, subtraction, scalar/vector product), Step-by-step solutions with formulas, Theoretical overviews for concepts, Random number generator for practice problems

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

**In-app purchases:** none


## Frequently asked questions

### Is e free?

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

### Is Linear Algebra Pro free?

Linear Algebra Pro costs $4.99, with no in-app purchases.

### Which has better reviews, e or Linear Algebra Pro?

e and Linear Algebra Pro are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do e or Linear Algebra Pro have ads?

Neither e nor Linear Algebra Pro shows ads.

### Which is updated more often, e or Linear Algebra Pro?

e ships an update every 11 months, and Linear Algebra Pro every 4 months. Most recently, e was updated on October 5, 2026 and Linear Algebra Pro on October 12, 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.*