# Find JP zip code vs 年号電卓Plus

The clearest difference is review sentiment: Find JP zip code at 100% against 年号電卓Plus's 38%. Find JP zip code also leads on iOS requirement (7.0 vs 17.6). 年号電卓Plus's advantage is in-app purchases (none vs 1) and update cadence (every 6 weeks vs every 6 months). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Find JP zip code sells 1 one-off in-app purchase. 年号電卓Plus asks for nothing beyond the download.

Find JP zip code ships an update every 6 months, 年号電卓Plus every 6 weeks. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Find JP zip code | 年号電卓Plus |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 37.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 5 MB | 7 MB |
| Requires iOS | **7.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Mitsuhiro Shirai](https://appshunter.io/developer/602643484) | [Nakanishi Toshihiko](https://appshunter.io/developer/712843914) |

## What reviewers say

### Find JP zip code

[App page](https://appshunter.io/ios/app/find-jp-zip-code-zipnofinder/id778634221)

Quickly find Japanese postal codes and addresses offline. Search by postal number or address components using Kanji or Yomigana. Supports advanced AND searches and integrates with map applications.

**Highlights:** Offline postal code search, Address search by Kanji/Yomigana, Company address data, Substring and partial matching, AND search functionality, Copy to clipboard, Map integration

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Delete ads | $0.99 | one-time |


### 年号電卓Plus

[App page](https://appshunter.io/ios/app/plus/id1320583340)

Easily convert between Western and Japanese eras, and determine birth years from age. Explore historical context with explanations for era changes and significant events of each year.

**Highlights:** Western to Japanese era conversion, Japanese era to Western conversion, Calculate birth year from age, View era start and end dates, Understand reasons for era changes, Discover major events of each year

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Find JP zip code free?

Find JP zip code is free to download, with in-app purchases available.

### Is 年号電卓Plus free?

年号電卓Plus is free to download, with no in-app purchases.

### Do Find JP zip code or 年号電卓Plus have ads?

Neither Find JP zip code nor 年号電卓Plus shows ads.

### Which is updated more often, Find JP zip code or 年号電卓Plus?

Find JP zip code ships an update every 6 months, and 年号電卓Plus every 6 weeks. Most recently, Find JP zip code was updated on October 8, 2026 and 年号電卓Plus on October 12, 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.*