即決ルーレット (Roulette) vs QR Scan Shield
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
即決ルーレット (Roulette)
This utility app helps you make random decisions using a customizable roulette wheel. Spin to decide anything with adjustable settings like spinning time, background music, and colors. Enjoy a fun and easy way to resolve choices.
- Random decision making
- Customizable roulette operation
- Adjustable spinning time
- Customizable BGM
- Color customization
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This is a roulette app that you can use when you want to decide something randomly. ◆Features Easy and smooth lottery Roulette operation can be customized (spinning time, BGM, color, etc.) ◆Material credits BGM: MusMus SE: OtoLogic, Sound Effects Lab ◆Caution The developer is not responsible for any trouble or damage caused by the use of this app. We hope you will use it with a sense of fun and without trouble.
QR Scan Shield
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Stay safe every time you scan. QR Scan Shield automatically checks URLs for threats the moment you scan a QR code, protecting you from phishing sites and malware. ■ Scan & Security Check • Instantly read QR codes and barcodes with your camera • Automatic URL safety analysis on every scan • Detects phishing, malware, and suspicious links • Scan results saved to history automatically ■ Home Screen Widget • View your recent scan history right from your home screen • Tap any entry to jump straight to the details • No need to open the app ■ Scan History • Review past scan results anytime • Mark important URLs as favorites for quick access • Add notes to any scan record ■ QR Code Creator • Create QR codes for URLs, text, contacts, email, and phone numbers • Save or share your generated QR codes instantly ■ Go Pro — One-Time Purchase • High-accuracy security checks powered by Google Safe Browsing API • Unlimited scan history and favorites • Ad-free experience • One-time purchase — no subscription required
Screenshots
Verdict
The clearest difference is update cadence: QR Scan Shield at every 2 weeks against 即決ルーレット (Roulette)'s monthly. 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. 即決ルーレット (Roulette) sells 6 one-off in-app purchases and QR Scan Shield sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
即決ルーレット (Roulette) ships an update monthly, QR Scan Shield every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.
| Parameter | 即決ルーレット (Roulette) | QR Scan Shield |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) — better | — |
| Positive reviews | 88.0% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 23 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomohiro Ohwada | SHUNSUKE FURUYA |
In-app purchases
即決ルーレット (Roulette)
- Development support$0.99
- Remove Ads$1.99
- Development support$1.99
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- Remove Ads & Support$2.99
- Development support$3.99
- Development support$6.99
QR Scan Shield
- QR Scan Shield Pro$2.99
Questions
Is 即決ルーレット (Roulette) free?
Is QR Scan Shield free?
Do 即決ルーレット (Roulette) or QR Scan Shield have ads?
Which is updated more often, 即決ルーレット (Roulette) or QR Scan Shield?
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