# Shinkansen smartEX App vs Currency Wallpaper

The clearest difference is review sentiment: Currency Wallpaper at 100% against Shinkansen smartEX App's 17%. Currency Wallpaper also leads on rating (5.0 vs 1.7) and monetization model (free vs free with in-app purchases). Shinkansen smartEX App's advantage is ratings volume (606 vs 14) and chart position (#148 vs unranked). On price, ads, 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.

Currency Wallpaper holds the better App Store score, 5.0 against 1.7. That said, the two scores are not equally well evidenced: Shinkansen smartEX App has 606 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 17% of Shinkansen smartEX App's written reviews are positive against 100% of Currency Wallpaper's.

Shinkansen smartEX App ships an update monthly, Currency Wallpaper fortnightly. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Shinkansen smartEX App | Currency Wallpaper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.7 (606 ratings)](https://appshunter.io/ios/app/shinkansen-smartex-app/id1253336330/reviews) | **[5.0 (14 ratings)](https://appshunter.io/ios/app/currency-wallpaper/id6737982012/reviews)** |
| Number of ratings | **606** | 14 |
| Positive reviews | 16.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#148** | — |
| Size | 51 MB | 5 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Central Japan Railway Company](https://appshunter.io/developer/454429903) | [Kenny Truong](https://appshunter.io/developer/1778677810) |

## What reviewers say

### Shinkansen smartEX App

[App page](https://appshunter.io/ios/app/shinkansen-smartex-app/id1253336330)

**Currently charting:** #148 Top Free · Travel (US App Store)

Easily reserve Shinkansen seats, hotels, and activities. Enjoy discounts for early bookings and flexible changes. Access station and train service information, and use QR tickets or designated IC cards for seamless travel.

**Highlights:** Reserve Shinkansen seats, Book hotels and activities, Early booking discounts, Free reservation changes, Select seats from map, QR-Ticket and IC card boarding, Fingerprint authentication login

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


### Currency Wallpaper

[App page](https://appshunter.io/ios/app/currency-wallpaper/id6737982012)

Transform your lock screen into a dynamic travel tool. This app generates personalized currency conversion charts that are visible without unlocking your device, offering instant access to exchange rates.

**Highlights:** Custom lock screen conversion tables, Instant exchange rate checks, No unlocking required, Travel companion tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Shinkansen smartEX App free?

Shinkansen smartEX App is free to download, with no in-app purchases.

### Is Currency Wallpaper free?

Currency Wallpaper is free to download, with no in-app purchases.

### Which has better reviews, Shinkansen smartEX App or Currency Wallpaper?

Currency Wallpaper is rated higher. Shinkansen smartEX App averages 1.7 out of 5 from 606 ratings, while Currency Wallpaper averages 5.0 from 14 ratings.

### Do Shinkansen smartEX App or Currency Wallpaper have ads?

Neither Shinkansen smartEX App nor Currency Wallpaper shows ads.

### Which is updated more often, Shinkansen smartEX App or Currency Wallpaper?

Shinkansen smartEX App ships an update monthly, and Currency Wallpaper fortnightly. Most recently, Shinkansen smartEX App was updated on October 29, 2026 and Currency Wallpaper on October 21, 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.*