# Doodle Spark vs SoundViz

The clearest difference is in-app purchases: SoundViz at none against Doodle Spark's 1. Doodle Spark's advantage is ads (none vs shown) and update cadence (every 3 days vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Doodle Spark sells 1 one-off in-app purchase. SoundViz asks for nothing beyond the download.

Doodle Spark ships an update every 3 days, SoundViz monthly. The most recent releases landed on October 31, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Doodle Spark | SoundViz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/doodle-spark/id6760378367/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | Free | — |
| Size | 11 MB | 15 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Matt Savage](https://appshunter.io/developer/1884198629) | [MIZOU, CO., LTD.](https://appshunter.io/developer/1542553141) |

## What reviewers say

### Doodle Spark

[App page](https://appshunter.io/ios/app/doodle-spark/id6760378367)

This app offers a simple, engaging drawing experience for toddlers. Children can create colorful rainbow trails, trigger fireworks, and watch their art glow. It's designed with no distractions, making it easy for young children to use independently.

**Highlights:** Rainbow brushstrokes, Interactive fireworks, Glowing, fading strokes, Multi-finger drawing, Guided Access support, Distraction-free interface

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Doodle Spark Plus | $0.99 | one-time |


### SoundViz

[App page](https://appshunter.io/ios/app/soundviz-sound-visualizer/id6761097310)

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

**In-app purchases:** none


## Frequently asked questions

### Is Doodle Spark free?

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

### Is SoundViz free?

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

### Do Doodle Spark or SoundViz have ads?

SoundViz shows ads; Doodle Spark does not.

### Which is updated more often, Doodle Spark or SoundViz?

Doodle Spark ships an update every 3 days, and SoundViz monthly. Most recently, Doodle Spark was updated on October 31, 2026 and SoundViz on November 9, 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.*