# QuantumReader vs Doodle Mind

The clearest difference is in-app purchases: Doodle Mind at none against QuantumReader's 1. Doodle Mind also leads on update cadence (every 2 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

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

QuantumReader ships an update every 2 months, Doodle Mind every 2 days. The most recent releases landed on September 25, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | QuantumReader | Doodle Mind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 5 MB | 25 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Masayuki Akamatsu](https://appshunter.io/developer/284722836) | [Guangzhou Youban Hudong Technology Co., Ltd.](https://appshunter.io/developer/1573385189) |

## What reviewers say

### QuantumReader

[App page](https://appshunter.io/ios/app/quantumreader/id6752207408)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### Doodle Mind

[App page](https://appshunter.io/ios/app/doodle-mind/id6756313176)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QuantumReader free?

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

### Is Doodle Mind free?

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

### Do QuantumReader or Doodle Mind have ads?

Neither QuantumReader nor Doodle Mind shows ads.

### Which is updated more often, QuantumReader or Doodle Mind?

QuantumReader ships an update every 2 months, and Doodle Mind every 2 days. Most recently, QuantumReader was updated on September 25, 2026 and Doodle Mind on September 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*