Shinkansen smartEX App vs Currency Wallpaper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shinkansen smartEX App
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.
- 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
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▼With the EX app, you can: - Reserve Shinkansen seats through the app easily - Discount for early booking - Reserve Shinkansen seats up to 1 year in advance - You can make as many changes as you need, free of charge, before getting on the train - Reserve a set of Shinkansen seats and hotel rooms! - Reserve activities, hotels and car rentals! - Select any seat from the seat map (*reserved seats only) - Information on services available in stations and trains - You can log in quickly by using fingerprint authentication. (only for compatible models) ▼ Main features - Membership registration - Purchase ticket/Reserve seats (time designation, train name designation, easy free seat reservation)) - Confirm reservation - Change and refund reservation (reducing the number of persons) - Display purchase history and receipt - Check, change member information - Display QR-Ticket for boarding - Designate or register IC card for boarding - Service status information (Link) ▼ Notes - Membership registration is required to use this app. For registration, personal information is required, such as member name, date of birth, and a valid credit card, etc. - Ticket purchase (reservation) payment will be taken from the credit card registered on the account. -- You need to register or designate IC card for public transportation (*) to travel ticketless with IC card. (*) Kitaca, PASMO, Suica, manaca, TOICA, PiTaPa, ICOCA, Hayakaken, nimoca, SUGOCA - You need the pickup code to pick up tickets from ticket vending machines, etc., at main stations of Tokaido Sanyo Kyushu Shinkansen, such as Tokyo, Kyoto, Shin-Osaka, Hiroshima, Hakata, Kumamoto etc. - Please do not use this app to make a seat reservation for Japan Rail Pass. - This service is available only in English. - For more details on this service, please see the website. *The email address below is for inquiries about application specifications. Please note that we cannnot answer inquiries about the service.
Currency Wallpaper
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.
- Custom lock screen conversion tables
- Instant exchange rate checks
- No unlocking required
- Travel companion tool
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Turn your lock screen into a travel companion! Currency Wallpaper creates custom conversion tables on your lock screen, letting you check conversions instantly - no unlocking needed.
Screenshots
Verdict
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 (#136 vs unranked). On price, ads, in-app purchases 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. 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.
| Parameter | Shinkansen smartEX App | Currency Wallpaper |
|---|---|---|
| Price | Free | Free |
| Rating | 1.7 (606 ratings) | 5.0 (14 ratings) — better |
| Positive reviews | 16.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 606 — better | 14 |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #136 — better | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 51 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Central Japan Railway Company | Kenny Truong |
Customer experience
Shinkansen smartEX App
Currency Wallpaper
In-app purchases
Shinkansen smartEX App
No in-app purchases
Currency Wallpaper
No in-app purchases
Questions
Is Shinkansen smartEX App free?
Is Currency Wallpaper free?
Which has better reviews, Shinkansen smartEX App or Currency Wallpaper?
Do Shinkansen smartEX App or Currency Wallpaper have ads?
Which is updated more often, Shinkansen smartEX App or Currency Wallpaper?
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