# Quick Graph vs Isotope Browser

The clearest difference is in-app purchases: Isotope Browser at none against Quick Graph's 1. Isotope Browser also leads on rating (4.8 vs 4.6) and update cadence (every 6 weeks vs every 3 months). Quick Graph's advantage is ratings volume (405 vs 27) and review sentiment (94% vs 83%). On price, ads and device support there is nothing between them.

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

Isotope Browser holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Quick Graph has 405 ratings behind it against 27, so its average is the more settled of the two. Written reviews complicate that: 94% of Quick Graph's written reviews are positive against 83% of Isotope Browser's, so the app with the better star average is not the one people write more warmly about.

Quick Graph ships an update every 3 months, Isotope Browser every 6 weeks. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Quick Graph | Isotope Browser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (405 ratings)](https://appshunter.io/ios/app/quick-graph/id292412367/reviews) | **[4.8 (27 ratings)](https://appshunter.io/ios/app/isotope-browser/id943890538/reviews)** |
| Number of ratings | **405** | 27 |
| Positive reviews | **93.6% of reviews** | 82.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 3 MB | 8 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KZ Labs](https://appshunter.io/developer/1091008972) | [IAEA](https://appshunter.io/developer/535500126) |

## 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


### Isotope Browser

[App page](https://appshunter.io/ios/app/isotope-browser/id943890538)

Access comprehensive nuclear data for over 4,000 nuclides and isomers. Explore interactive charts, filter by various criteria, and view detailed information for each nuclide. Data is sourced from reliable resources and available offline.

**Highlights:** Properties of over 4,000 nuclides and isomers, Interactive Chart of Nuclides, Periodic Table of Elements, Filter by half-life, decay mode, radiation type, and energy, Detailed nuclide information with web links, Offline access to embedded database

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

**In-app purchases:** none


## Frequently asked questions

### Is Quick Graph free?

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

### Is Isotope Browser free?

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

### Which has better reviews, Quick Graph or Isotope Browser?

Isotope Browser is rated higher. Quick Graph averages 4.6 out of 5 from 405 ratings, while Isotope Browser averages 4.8 from 27 ratings.

### Do Quick Graph or Isotope Browser have ads?

Neither Quick Graph nor Isotope Browser shows ads.

### Which is updated more often, Quick Graph or Isotope Browser?

Quick Graph ships an update every 3 months, and Isotope Browser every 6 weeks. Most recently, Quick Graph was updated on September 17, 2026 and Isotope Browser on September 21, 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.*