# Duoler vs Quick Math Challenges

The clearest difference is ads: Duoler at none against Quick Math Challenges's shown. Quick Math Challenges's advantage is update cadence (fortnightly vs every 6 weeks) and iOS requirement (16.4 vs 18.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Duoler sells 2 in-app purchases, starting at $2.99 per month and Quick Math Challenges sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Duoler ships an update every 6 weeks, Quick Math Challenges fortnightly. The most recent releases landed on September 20, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Duoler | Quick Math Challenges |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Size | 634 MB | 101 MB |
| Requires iOS | 18.1 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [翠涓 徐](https://appshunter.io/developer/1817823992) | [Thieu Khue](https://appshunter.io/developer/1554439862) |

## What reviewers say

### Duoler

[App page](https://appshunter.io/ios/app/duoler/id6756180237)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Annual Subscription | $24.99 | per year |


### Quick Math Challenges

[App page](https://appshunter.io/ios/app/quick-math-challenges/id6757264130)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $1.99 | per month |
| LogiX Rush Lifetime Pro | $19.99 | one-time |


## Frequently asked questions

### Is Duoler free?

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

### Is Quick Math Challenges free?

Quick Math Challenges is free to download, with in-app purchases available.

### Do Duoler or Quick Math Challenges have ads?

Quick Math Challenges shows ads; Duoler does not.

### Which is updated more often, Duoler or Quick Math Challenges?

Duoler ships an update every 6 weeks, and Quick Math Challenges fortnightly. Most recently, Duoler was updated on September 20, 2026 and Quick Math Challenges on September 25, 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.*