# e vs Quick Graph

The clearest difference is in-app purchases: e at none against Quick Graph's 2. e also leads on rating (5.0 vs 4.6) and iOS requirement (15.5 vs 17.0). Quick Graph's advantage is ratings volume (423 vs 1) and update cadence (every 5 months vs every 11 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Quick Graph sells 2 one-off in-app purchases. e asks for nothing beyond the download.

e holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Quick Graph has 423 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 90% of e's written reviews are positive against 94% of Quick Graph's, so the app with the better star average is not the one people write more warmly about.

e ships an update every 11 months, Quick Graph every 5 months. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | e | Quick Graph |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/e-spacetime-converter/id291317973/reviews)** | [4.6 (423 ratings)](https://appshunter.io/ios/app/quick-graph/id292412367/reviews) |
| Number of ratings | 1 | **423** |
| Positive reviews | 90.0% of reviews | **93.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 5 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 6 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Elliptics, Ltd.](https://appshunter.io/developer/289108972) | [KZ Labs](https://appshunter.io/developer/1091008972) |

## 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


### Quick Graph

[App page](https://appshunter.io/ios/app/quick-graph/id292412367)

This powerful graphing calculator leverages multitouch displays for 2D and 3D equation visualization. It supports various coordinate systems and offers features like equation editing, evaluation, and a library for storing common formulas. Advanced features are available through an in-app purchase.

**Highlights:** 2D and 3D graphing, Multiple coordinate systems, Equation evaluation, Equation library, Copy/email/save graphs, Implicit and inequality graphing (advanced)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Features | $1.99 | one-time |
| Buy Us a Coffee | $1.99 | one-time |

**What reviewers like**

- 🚀 Beautiful display
- 🚀 Quick and straightforward equations entry
- 🚀 Configurable axes and easy translation
- 👍 Wonderful and beautiful app
- 👍 Long tradition of working well

**What reviewers complain about**

- 🐛 Can't really graph polar
- 🐛 Redesign stinks
- 🐛 Few options for tablet version
- 🐛 Confusing design
- 🐛 Horrible manual

**Reported bugs**

- Crashes when trying to save to photos
- Equations not visible when projecting to external display
- Incorrect rendering of some functions like y=tan(x)*x
- Degradation in 3D plot quality when zooming out
- Equations not working as expected for simple cases like x+y=0

**Requested features**

- Display 3D surface with variable opacity or as wireframe
- Ability to define and display functions over a certain interval
- Ability to define and display parametric equations
- Ability to move cursor around within a function while typing
- Ability to animate equations with a parameter


## Frequently asked questions

### Is e free?

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

### Is Quick Graph free?

Quick Graph is free to download, with in-app purchases available.

### Which has better reviews, e or Quick Graph?

e is rated higher. e averages 5.0 out of 5 from 1 ratings, while Quick Graph averages 4.6 from 423 ratings.

### Do e or Quick Graph have ads?

Neither e nor Quick Graph shows ads.

### Which is updated more often, e or Quick Graph?

e ships an update every 11 months, and Quick Graph every 5 months. Most recently, e was updated on November 6, 2026 and Quick Graph on October 31, 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.*