# Iso2Ortho vs Desmos Graphing Calculator

The clearest difference is review sentiment: Desmos Graphing Calculator at 81% against Iso2Ortho's 0%. Desmos Graphing Calculator also leads on in-app purchases (none vs 1) and update cadence (every 2 months vs every 12 months). Iso2Ortho's advantage is iOS requirement (9.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Iso2Ortho sells 1 one-off in-app purchase. Desmos Graphing Calculator asks for nothing beyond the download.

Iso2Ortho ships an update every 12 months, Desmos Graphing Calculator every 2 months. The most recent releases landed on October 12, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Iso2Ortho | Desmos Graphing Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (1.3K ratings)](https://appshunter.io/ios/app/desmos-graphing-calculator/id653517540/reviews)** |
| Number of ratings | — | **1.3K** |
| Positive reviews | 0.0% of reviews | **80.8% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | — | **#137** |
| Size | 181 MB | 18 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Roth Educational Services (PTY) LTD](https://appshunter.io/developer/623190971) | [Desmos](https://appshunter.io/developer/653517543) |

## What reviewers say

### Iso2Ortho

[App page](https://appshunter.io/ios/app/iso2ortho/id623190828)

This app offers a tool for projecting isometric models to display four orthographic views, automatically updating as you switch between 1st and 3rd angle projections. It also includes an educational game designed to reinforce understanding of orthographic view positioning through challenges and scoring.

**Highlights:** Isometric to orthographic projection tool, Automatic view updates, 1st and 3rd angle projection switching, Educational game for view positioning, Scoring based on correctness and speed, Level progression system

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Shapes | $1.99 | one-time |


### Desmos Graphing Calculator

[App page](https://appshunter.io/ios/app/desmos-graphing-calculator/id653517540)

**Currently charting:** #137 Top Free · Education (US App Store)

Explore mathematical concepts by graphing any equation, from simple lines to complex series. This powerful tool allows for interactive exploration with sliders, data tables, and animations. It also includes a scientific calculator and supports inequalities and accessibility features.

**Highlights:** Graph any equation (polar, cartesian, parametric), Interactive sliders for function transformations, Input and plot data with tables, Animate graphs, Scientific calculator functionality, Plot inequalities, Accessibility features

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Insane tool for FREE!
- 🚀 Best mobile graphing app
- 👍 Awesome for algebra and calculus
- 👍 Genuinely an awesome resource
- 👍 Makes math easier

**What reviewers complain about**

- 🐛 Crashes and bugs
- 🐛 Glitches with certain features
- 🐛 Loses saved data
- 🐛 Keyboard issues
- 🐛 Zooming and panning problems

**Reported bugs**

- Crashes when using certain functions
- Graphs not displaying properly
- Login issues
- Compatibility problems with older devices

**Requested features**

- Dark mode
- Copy and paste functionality
- Ability to save and load graphs
- Improved handling of complex numbers and polar equations
- More customization options


## Frequently asked questions

### Is Iso2Ortho free?

Iso2Ortho is free to download, with in-app purchases available.

### Is Desmos Graphing Calculator free?

Desmos Graphing Calculator is free to download, with no in-app purchases.

### Do Iso2Ortho or Desmos Graphing Calculator have ads?

Neither Iso2Ortho nor Desmos Graphing Calculator shows ads.

### Which is updated more often, Iso2Ortho or Desmos Graphing Calculator?

Iso2Ortho ships an update every 12 months, and Desmos Graphing Calculator every 2 months. Most recently, Iso2Ortho was updated on October 12, 2026 and Desmos Graphing Calculator on October 26, 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.*