# Shaffer Elementary vs DiagramQuiz

The clearest difference is in-app purchases: Shaffer Elementary at none against DiagramQuiz's 1. Shaffer Elementary also leads on iOS requirement (13.4 vs 17.6). DiagramQuiz's advantage is update cadence (every 5 days vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. DiagramQuiz sells 1 one-off in-app purchase. Shaffer Elementary asks for nothing beyond the download.

Shaffer Elementary ships an update every 5 months, DiagramQuiz every 5 days. The most recent releases landed on October 27, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Shaffer Elementary | DiagramQuiz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/diagramquiz/id6757562378/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 27 MB | 5 MB |
| Requires iOS | **13.4** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Catapult K12](https://appshunter.io/developer/1449934270) | [Fusion Studios](https://appshunter.io/developer/395983467) |

## What reviewers say

### Shaffer Elementary

[App page](https://appshunter.io/ios/app/shaffer-elementary/id1629746103)

**Features:** macOS Compatibility

**In-app purchases:** none


### DiagramQuiz

[App page](https://appshunter.io/ios/app/diagramquiz/id6757562378)

Transform any diagram into an interactive study tool. Import or photograph images, then instantly remove labels to create blank versions for self-testing or classroom use. Supports multiple study modes for effective learning.

**Highlights:** Import diagrams from photos, Generate blank diagrams by hiding labels, Printable unlabeled diagrams, Interactive Matching Mode, Typing and instant feedback, Save progress for tests

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DiagramQuiz | $5.99 | one-time |


## Frequently asked questions

### Is Shaffer Elementary free?

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

### Is DiagramQuiz free?

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

### Do Shaffer Elementary or DiagramQuiz have ads?

Neither Shaffer Elementary nor DiagramQuiz shows ads.

### Which is updated more often, Shaffer Elementary or DiagramQuiz?

Shaffer Elementary ships an update every 5 months, and DiagramQuiz every 5 days. Most recently, Shaffer Elementary was updated on October 27, 2026 and DiagramQuiz on October 14, 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.*