QR Scanner vs Charging Engine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
QR Scanner
Easily scan and read QR codes and barcodes with this safe and professional tool. It automatically detects and decodes information without needing an internet connection. Protects user privacy by only requesting necessary camera permissions.
- Scan all QR codes and barcodes
- Instant scanning and decoding
- No internet connection required
- Scan history
- Minimal permissions required
- User privacy protected
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Safe, professional and easy to use QR code scanner, QR code reader and barcode scanner. Download now! To scan a QR code or barcode, you just open the app and point your camera at the code you want to scan, and the app will automatically detect, scan, read and decode it. QR Code Scanner/QR Code Reader Features: • Scan all barcodes and QR codes, including different QR code formats • Instant QR code scanning and decoding • No internet connection required • Scan history • Only requires camera permissions to work • Does not ask for any unnecessary permissions • User privacy is fully protected Automatic - Renewal Yearly (3-day free trial), Monthly (3-day free trial) and Weekly subscriptions remove ads. Weekly Subscription $3.99 Monthly Subscription $8.99 Annual Subscription $19.99 Automatic renewal service: https://qrios-c453e.web.app/auto_renewal_service.html Terms of Use: https://qrios-c453e.web.app/qr_terms.html
Charging Engine
Enhance your phone's charging experience with dynamic, futuristic animations and live wallpapers. Visualize battery performance and enjoy regular content updates to keep your device looking fresh and engaging.
- Futuristic charging animations
- High-definition dynamic screensavers
- Dozens of 3D charging wallpapers
- Live wallpaper collections
- Battery performance monitor
- Regular content updates
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Charging Engine provides a variety of cool and futuristic charging animations. When your phone is charging, just plug in the power supply, and an exclusive and exquisite high-definition dynamic screensaver will be displayed instantly. Make your phone full of futuristic, eye-catching and fun! We provide dozens of 3D charging wallpapers, dynamic and cool wallpapers, the picture is smooth and delicate, and the frame will never drop. Follow our tutorial to guide you step by step. When you connect the device to the charger, the animation will appear immediately for you to watch. Add color to your life with a charging lock! With a top-notch wallpaper app, dazzle with a wide variety of unique wallpaper collections that can help your mobile experience go beyond your imagination. main feature: - Live wallpapers: No need to waste your time on internet research for wallpaper as you can find them all on this amazing app. anytime, anywhere, including abstract, animals, space, nature, flowers, fantasy and more! - Various charging animations: The editor has carefully selected dozens of different styles of live wallpapers for you, making your phone richer and far from boring! - Battery Performance Monitor: Visualize your phone device's battery capacity by watts. Check the charging history in the app to get a clear idea of the available time in different situations. - Regular updates: from high-tech visualizations to light-hearted scenarios - you'll find what you're looking for! We keep all categories fresh and exciting by adding new content. stay tuned! [advanced edition] Upgrade - weekly subscription: $3.99/ week with 3-day free trial;$3.99/week Upgrade - monthly subscription: $19.99/ month with 3-day free trial;$19.99/month Upgrade - annual subscription: $69.99/ year,with 3-day free trial; $69.99/ year Payment will be collected from your iTunes account after you confirm the purchase. The system will automatically renew the subscription for you, unless the automatic renewal setting is turned off 24 hours before the end of the current subscription period. Your account will be charged the next renewal fee within 24 hours before the end of this subscription period and the renewal fee will be confirmed. Subscriptions will be controlled by you, and automatic renewal can be turned off in the user's account Settings after purchase. When you purchase a subscription to this version, you will lose any unused portion of the free trial period. Terms of service: https://sites.google.com/view/terms-of-service-of-charging-w/%E9%A6%96%E9%A1%B5 Privacy agreement: https://sites.google.com/view/privacypolicyofcharging/%E9%A6%96%E9%A1%B5 If you have any other questions, please contact us through the following email zhiyinzhihui22@163.com
Screenshots
Verdict
The clearest difference is review sentiment: Charging Engine at 52% against QR Scanner's 0%. Charging Engine also leads on rating (4.8 vs 3.1) and ads (none vs shown). QR Scanner's advantage is monetization model (free with in-app purchases vs subscription) and update cadence (weekly vs every 6 weeks). On price, in-app purchases, device support and iOS requirement 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. QR Scanner sells 4 in-app purchases, starting at $1.99 per 7 days and Charging Engine sells 10 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Charging Engine holds the better App Store score, 4.8 against 3.1. That said, the two scores are not equally well evidenced: Charging Engine has 11K ratings behind it against 34, so its average is the more settled of the two. Written reviews point the same way: 0% of QR Scanner's written reviews are positive against 52% of Charging Engine's.
QR Scanner ships an update weekly, Charging Engine every 6 weeks. The most recent releases landed on November 3, 2026 and November 10, 2026 respectively.
| Parameter | QR Scanner | Charging Engine |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (34 ratings) | 4.8 (11K ratings) — better |
| Positive reviews | 0.0% of reviews | 51.6% of reviews — better |
| Number of ratings | 34 | 11K — better |
| Update frequency | Weekly — better | Every 6 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 50 MB | 112 MB |
| Age rating | 4+ | 4+ |
| Developer | HUIENTZ UK LTD | Bluewolf Technology Limited |
Customer experience
QR Scanner
Charging Engine
Bugs and requests
QR Scanner
Not enough reviews yet to summarise bugs or requests.
Charging Engine
Reported bugs
3 issues- Wallpapers don't work as advertised
- App only functions when kept open during charging
- Subscription cannot be easily canceled
Requested features
4 requests- Add search bar to find desired wallpapers
- Allow users to upload their own photos/videos
- Provide option to mute sound effects
- Make app fully free without subscription
In-app purchases
QR Scanner
- One Week Premium - Basic$1.997 Days
- One Month Premium - Standard3 Days trial$6.991 Month
- One Year Premium - Popular7 Days trial$14.991 Year
- Lifetime Premium - Best Value$19.99
Charging Engine
- ChargingEngine Subscription3 Days trial$3.997 Days
- ChargingEngine Subscription$3.997 Days
- Weekly subscription7 Days trial$4.997 Days
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- ChargingEngine Subscription3 Days trial$19.991 Month
- ChargingEngine Subscription$19.991 Month
- ChargingEngine Subscription3 Days trial$23.991 Month
- ChargingEngine Subscription$23.991 Month
- ChargingEngine Subscription3 Days trial$69.991 Year
- ChargingEngine Subscription$69.991 Year
- ChargingEngine lifetime$69.99
Questions
Is QR Scanner free?
Is Charging Engine free?
Which has better reviews, QR Scanner or Charging Engine?
Do QR Scanner or Charging Engine have ads?
Which is updated more often, QR Scanner or Charging Engine?
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