Comparison

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.

Head to head
About

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.

Highlights
  • Random decision making
  • Customizable roulette operation
  • Adjustable spinning time
  • Customizable BGM
  • Color customization
Features
Read full description

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.

About

QR Scan Shield

Features
Read full description

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

即決ルーレット (Roulette)4 screens
QR Scan Shield4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 9 level
即決ルーレット (Roulette) versus QR Scan Shield: the parameters behind the verdict, then further details
Parameter即決ルーレット (Roulette)QR Scan Shield
PriceFreeFree
Rating5.0 (7 ratings) — better—
Positive reviews88.0% of reviews—
Number of ratings7 — better—
Update frequencyMonthlyEvery 2 weeks — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size23 MB7 MB
Age rating4+4+
DeveloperTomohiro OhwadaSHUNSUKE FURUYA

In-app purchases

6 purchases

即決ルーレット (Roulette)

One-time6
  • Development support$0.99
  • Remove Ads$1.99
  • Development support$1.99
Show 3 more
  • Remove Ads & Support$2.99
  • Development support$3.99
  • Development support$6.99
1 purchases

QR Scan Shield

One-time1
  • QR Scan Shield Pro$2.99

Questions

Is 即決ルーレット (Roulette) free?
即決ルーレット (Roulette) is free to download, with in-app purchases available.
Is QR Scan Shield free?
QR Scan Shield is free to download, with in-app purchases available.
Do 即決ルーレット (Roulette) or QR Scan Shield have ads?
Both 即決ルーレット (Roulette) and QR Scan Shield show ads.
Which is updated more often, 即決ルーレット (Roulette) or QR Scan Shield?
即決ルーレット (Roulette) ships an update monthly, and QR Scan Shield every 2 weeks. Most recently, 即決ルーレット (Roulette) was updated on November 7, 2026 and QR Scan Shield on October 31, 2026.

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