Find JP zip code vs Gun Leash
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Find JP zip code
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.
- Offline postal code search
- Address search by Kanji/Yomigana
- Company address data
- Substring and partial matching
- AND search functionality
- Copy to clipboard
- Map integration
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This is an application which searches for Japanese postal numbers. From postal number to address, from a part of the address, be able to search for the postal number offline faster. Also be able to search for the data of the addresses of the companies that have many postals unlike general/common addresses. Will search from within 145,000 address data. The numbers will be searched via matching a sub-string with the beginning of the field, while the address will be searched via part matching the「漢字」(kanji) or the「よみがな」(yomigana). For the address, it can be searched with AND, like for example,「とう きょう」and「ちよだく」. Searching method is easy. If you place numbers then it will automatically decide to search for the numbers; if you place the address, it will automatically decide to search for addresses. For AND-search, input several parts of addresses with「,」or「、」as separators. For example, if「とうきょう、ちようだく」,it will search addresses that match both「とうきょう」and「ちよだく」. From the search results, you can be able to copy the postal numbers or the addresses to the clipboard. Moreover, you can be able to display the searched address through a map application. For the postal number data, a Japanese postal site or the latest data will be acquired and saved in the application. After saving, you can still search even if you're not connected to the network. There is also a notification function that notifies updates in postal number data, so you can always be able to acquire the latest data.
Gun Leash
This app uses a connected beacon to alert you if you leave your handgun behind. It focuses on proximity alerts to prevent loss or theft, without using GPS tracking or reporting your location.
- Proximity alerts
- Beacon integration
- Theft prevention
- Loss prevention
- Private notifications
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"Never lose your gun. Never leave your gun" The patented Gun Leash app talks to an iBeacon beacon attached to your handgun and protects you from losing or accidentally leaving your handgun behind where it can be stolen. No GPS. No tracking. No reporting location. Simple proximity technology that privately alerts the owner ONLY that they have forgotten their handgun.
Screenshots
Verdict
The clearest difference is review sentiment: Find JP zip code at 100% against Gun Leash's 50%. Find JP zip code also leads on iOS requirement (7.0 vs 15.0). Gun Leash's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 6 months). On price, ads, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Find JP zip code sells 1 one-off in-app purchase. Gun Leash asks for nothing beyond the download.
Find JP zip code ships an update every 6 months, Gun Leash every 2 months. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.
| Parameter | Find JP zip code | Gun Leash |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (4 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 7.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 5 MB | 26 MB |
| Age rating | 4+ | 17+ |
| Developer | Mitsuhiro Shirai | GUNNY, Inc |
Customer experience
Find JP zip code
Gun Leash
In-app purchases
Find JP zip code
- Delete ads$0.99
Gun Leash
No in-app purchases
Questions
Is Find JP zip code free?
Is Gun Leash free?
Do Find JP zip code or Gun Leash have ads?
Which is updated more often, Find JP zip code or Gun Leash?
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