# Quick Math Jam vs デカ文字計算

The clearest difference is in-app purchases: デカ文字計算 at none against Quick Math Jam's 3. デカ文字計算 also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Quick Math Jam sells 3 in-app purchases, starting at $0.99 per month. デカ文字計算 asks for nothing beyond the download.

Quick Math Jam ships an update every 3 weeks, デカ文字計算 every 4 weeks. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Quick Math Jam | デカ文字計算 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 weeks |
| Size | 44 MB | 6 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Guizhou Vanilla Information Technology Co., Ltd.](https://appshunter.io/developer/1870144710) | [maple project](https://appshunter.io/developer/6800461359) |

## What reviewers say

### Quick Math Jam

[App page](https://appshunter.io/ios/app/quick-math-jam/id6789366751)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| QuickMath Pro Monthly | $0.99 | per month |
| QuickMath Pro Annual | $5.99 | per year |
| QuickMath Pro Lifetime | $12.99 | one-time |


### デカ文字計算

[App page](https://appshunter.io/ios/app/big-text-math/id6818828030)

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

**In-app purchases:** none


## Frequently asked questions

### Is Quick Math Jam free?

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

### Is デカ文字計算 free?

デカ文字計算 is free to download, with no in-app purchases.

### Do Quick Math Jam or デカ文字計算 have ads?

Neither Quick Math Jam nor デカ文字計算 shows ads.

### Which is updated more often, Quick Math Jam or デカ文字計算?

Quick Math Jam ships an update every 3 weeks, and デカ文字計算 every 4 weeks. Most recently, Quick Math Jam was updated on November 10, 2026 and デカ文字計算 on November 6, 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.*