# Quick Graph vs Slopes

The clearest difference is in-app purchases: Slopes at none against Quick Graph's 1. Slopes also leads on rating (4.9 vs 4.6). Quick Graph's advantage is ratings volume (405 vs 41) and iOS requirement (9.0 vs 15.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Quick Graph sells 1 one-off in-app purchase. Slopes asks for nothing beyond the download.

Slopes holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Quick Graph has 405 ratings behind it against 41, so its average is the more settled of the two. Written reviews point the same way: 94% of Quick Graph's written reviews are positive against 100% of Slopes's.

Quick Graph ships an update every 3 months, Slopes every 2 months. The most recent releases landed on October 12, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Quick Graph | Slopes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (405 ratings)](https://appshunter.io/ios/app/quick-graph/id292412367/reviews) | **[4.9 (41 ratings)](https://appshunter.io/ios/app/slopes-differential-equations/id1136920301/reviews)** |
| Number of ratings | **405** | 41 |
| Positive reviews | 93.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 3 MB | 21 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KZ Labs](https://appshunter.io/developer/1091008972) | [Tim Lucas](https://appshunter.io/developer/1136916670) |

## What reviewers say

### 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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced Features | $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


### Slopes

[App page](https://appshunter.io/ios/app/slopes-differential-equations/id1136920301)

Explore graphical solutions to ordinary differential equations with this interactive educational tool. It offers six distinct activities, including plotting vector fields, solving systems of equations, and visualizing oscillations. Ideal for homework, classroom use, or research projects.

**Highlights:** Interactive ODE exploration, Vector field plotting, Systems of equations solver, Numerical approximation methods, Bifurcation diagram creation, Preloaded and custom examples

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quick Graph free?

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

### Is Slopes free?

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

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

Slopes is rated higher. Quick Graph averages 4.6 out of 5 from 405 ratings, while Slopes averages 4.9 from 41 ratings.

### Do Quick Graph or Slopes have ads?

Neither Quick Graph nor Slopes shows ads.

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

Quick Graph ships an update every 3 months, and Slopes every 2 months. Most recently, Quick Graph was updated on October 12, 2026 and Slopes on October 6, 2026.

---

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