# 4D Draw vs Ask Lyra

The clearest difference is in-app purchases: 4D Draw at none against Ask Lyra's 7. Ask Lyra's advantage is update cadence (every 3 months vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ask Lyra sells 7 in-app purchases, starting at $4.99 per 7 days. 4D Draw asks for nothing beyond the download.

4D Draw ships an update every 7 months, Ask Lyra every 3 months. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 4D Draw | Ask Lyra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (8 ratings)](https://appshunter.io/ios/app/4d-draw/id926050711/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 6 MB | 19 MB |
| Requires iOS | **17.1** | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jeff Weeks](https://appshunter.io/developer/326104308) | [Atkins Media, LLC](https://appshunter.io/developer/1869503133) |

## What reviewers say

### 4D Draw

[App page](https://appshunter.io/ios/app/4d-draw/id926050711)

This app allows users to draw and visualize four-dimensional figures using color to represent the fourth coordinate. It includes a help menu with drawing tutorials and creative ideas to aid in understanding 4D space.

**Highlights:** Draw 4-dimensional figures, Use color for the fourth coordinate, Built-in 'How to draw' guide, 4D construction ideas, Visualize 4-dimensional space

**In-app purchases:** none


### Ask Lyra

[App page](https://appshunter.io/ios/app/ask-lyra-the-math-engine/id6765612965)

**Features:** Family Sharing

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ask Lyra Weekly Pro | $4.99 | per 7 days |
| Ask Lyra Monthly Pro | $14.99 | per month |
| Ask Lyra Semester Pro | $34.99 | per 3 months |
| Ask Lyra Annual Pro | $79.99 | per year |
| Spark — 5 Fire Ups | $4.99 | one-time |
| Blaze — 15 Fire Ups | $12.99 | one-time |
| Inferno — 40 Fire Ups | $29.99 | one-time |


## Frequently asked questions

### Is 4D Draw free?

4D Draw is free to download, with no in-app purchases.

### Is Ask Lyra free?

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

### Do 4D Draw or Ask Lyra have ads?

Neither 4D Draw nor Ask Lyra shows ads.

### Which is updated more often, 4D Draw or Ask Lyra?

4D Draw ships an update every 7 months, and Ask Lyra every 3 months. Most recently, 4D Draw was updated on October 4, 2026 and Ask Lyra on October 7, 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.*