# Japan Prefecture Puzzle vs calcMod

The clearest difference is price: Japan Prefecture Puzzle at Free against calcMod's $1.99. Japan Prefecture Puzzle also leads on update cadence (every 2 months vs every 36 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Japan Prefecture Puzzle is free to download; calcMod costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Japan Prefecture Puzzle ships an update every 2 months, calcMod every 36 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Japan Prefecture Puzzle | calcMod |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 36 months |
| Monetization | Free | — |
| Size | 24 MB | 1 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Gloding Inc.](https://appshunter.io/developer/780228385) | [Alain Cardinaux](https://appshunter.io/developer/1443066124) |

## What reviewers say

### Japan Prefecture Puzzle

[App page](https://appshunter.io/ios/app/japan-prefecture-puzzle/id880929425)

Learn the geography of Japan by assembling a map puzzle. This app helps users of all ages identify and locate all 47 prefectures through interactive gameplay. It provides audio pronunciation and tracks completion times for a fun, educational experience.

**Highlights:** 47 prefecture puzzle pieces, Learn prefecture positions, Learn prefecture names, Audio pronunciation of names, One-finger touch controls, Time recording and fastest record display

**Features:** macOS Compatibility

**In-app purchases:** none


### calcMod

[App page](https://appshunter.io/ios/app/calcmod-blk/id1445938178)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Japan Prefecture Puzzle free?

Japan Prefecture Puzzle is free to download, with no in-app purchases.

### Is calcMod free?

calcMod costs $1.99, with no in-app purchases.

### Do Japan Prefecture Puzzle or calcMod have ads?

Neither Japan Prefecture Puzzle nor calcMod shows ads.

### Which is updated more often, Japan Prefecture Puzzle or calcMod?

Japan Prefecture Puzzle ships an update every 2 months, and calcMod every 36 months. Most recently, Japan Prefecture Puzzle was updated on November 6, 2026 and calcMod on November 2, 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.*