# 空港コード暗記：３レターマスター! vs TripReady

The clearest difference is ads: TripReady at none against 空港コード暗記：３レターマスター!'s shown. TripReady also leads on update cadence (every 2 days vs every 6 weeks) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. 空港コード暗記：３レターマスター! sells 2 one-off in-app purchases and TripReady sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

空港コード暗記：３レターマスター! ships an update every 6 weeks, TripReady every 2 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 空港コード暗記：３レターマスター! | TripReady |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 27 MB | 82 MB |
| Requires iOS | 17 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Ayumu Izumi](https://appshunter.io/developer/1822273057) | [Mitsuhiko Takata](https://appshunter.io/developer/1886306021) |

## What reviewers say

### 空港コード暗記：３レターマスター!

[App page](https://appshunter.io/ios/app/id6749082421)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告の完全削除のみ | $1.99 | one-time |
| アップグレード版 | $2.99 | one-time |


### TripReady

[App page](https://appshunter.io/ios/app/tripready/id6761417199)

This app helps you prepare for international travel by consolidating essential information like visa requirements, packing lists, and safety alerts. It offers AI-powered itinerary registration from screenshots and manages passenger details for easy access, even offline.

**Highlights:** Consolidated travel requirements (visa, safety, currency), AI-powered itinerary registration from screenshots, Passenger and seat management, Countdown and pre-departure notifications, Airport terminal information and maps, Online check-in deadline display, Offline access to travel documents

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TripReady プレミアム（月額） | $1.99 | per month |


## Frequently asked questions

### Is 空港コード暗記：３レターマスター! free?

空港コード暗記：３レターマスター! is free to download, with in-app purchases available.

### Is TripReady free?

TripReady is free to download, with in-app purchases available.

### Do 空港コード暗記：３レターマスター! or TripReady have ads?

空港コード暗記：３レターマスター! shows ads; TripReady does not.

### Which is updated more often, 空港コード暗記：３レターマスター! or TripReady?

空港コード暗記：３レターマスター! ships an update every 6 weeks, and TripReady every 2 days. Most recently, 空港コード暗記：３レターマスター! was updated on October 30, 2026 and TripReady on November 5, 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.*