# Orthographic Projection vs Nuclide Chart

The clearest difference is in-app purchases: Orthographic Projection at none against Nuclide Chart's 1. Orthographic Projection also leads on device support (5 vs 2) and iOS requirement (15.0 vs 17.0). Nuclide Chart's advantage is update cadence (daily vs every 57 months). On price and ads there is nothing between them.

Both are free to download. Nuclide Chart sells 1 one-off in-app purchase. Orthographic Projection asks for nothing beyond the download.

Orthographic Projection ships an update every 57 months, Nuclide Chart daily. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Orthographic Projection | Nuclide Chart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/orthographic-projection/id1062526689/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 57 months | **Daily** |
| Monetization | Free | — |
| Size | 384 MB | 15 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple TV** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Hajdu](https://appshunter.io/developer/896377670) | [Peer Jansen](https://appshunter.io/developer/1859289195) |

## What reviewers say

### Orthographic Projection

[App page](https://appshunter.io/ios/app/orthographic-projection/id1062526689)

Master orthographic projection with this interactive educational app. Ideal for technical students and engineers, it offers engaging ways to learn and test your skills in 1st and 3rd angle projections through fun, gamified modes. Build your knowledge and earn stars as you progress.

**Highlights:** Interactive orthographic projection learning, 1st and 3rd Angle Projection modes, Easy and Hard difficulty modes, Spatial orientation improvement, Symbolic drawing creation, 32+ parts for practice

**In-app purchases:** none


### Nuclide Chart

[App page](https://appshunter.io/ios/app/nuclide-chart/id6756217497)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nuclide Chart Pro | $2.99 | one-time |


## Frequently asked questions

### Is Orthographic Projection free?

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

### Is Nuclide Chart free?

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

### Do Orthographic Projection or Nuclide Chart have ads?

Neither Orthographic Projection nor Nuclide Chart shows ads.

### Which is updated more often, Orthographic Projection or Nuclide Chart?

Orthographic Projection ships an update every 57 months, and Nuclide Chart daily. Most recently, Orthographic Projection was updated on November 2, 2026 and Nuclide Chart on October 30, 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.*