# JDF クーポン vs Good value calculator

The clearest difference is ads: JDF クーポン at none against Good value calculator's shown. JDF クーポン also leads on iOS requirement (9.0 vs 12.1). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

JDF クーポン ships an update every 5 months, Good value calculator every 3 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | JDF クーポン | Good value calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 months** |
| Size | 32 MB | 28 MB |
| Requires iOS | **9.0** | 12.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Japan Airport Terminal Co., Ltd.](https://appshunter.io/developer/563513606) | [Yukihiro Morita](https://appshunter.io/developer/1320734281) |

## What reviewers say

### JDF クーポン

[App page](https://appshunter.io/ios/app/jdf/id1322335908)

**Features:** macOS Compatibility

**In-app purchases:** none


### Good value calculator

[App page](https://appshunter.io/ios/app/good-value-calculator/id1349646286)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JDF クーポン free?

JDF クーポン is free to download, with no in-app purchases.

### Is Good value calculator free?

Good value calculator is free to download, with no in-app purchases.

### Do JDF クーポン or Good value calculator have ads?

Good value calculator shows ads; JDF クーポン does not.

### Which is updated more often, JDF クーポン or Good value calculator?

JDF クーポン ships an update every 5 months, and Good value calculator every 3 months. Most recently, JDF クーポン was updated on October 14, 2026 and Good value calculator 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.*