MemClean vs Useful QR Code Reader PRO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MemClean
This utility tool helps improve device performance by freeing up RAM memory. It addresses sluggishness and lagging, offering a boost to your device's responsiveness. Compatible with devices running iOS 11 and later.
- Frees up RAM memory
- Boosts device performance
- Reduces sluggishness and lagging
- Supports iOS 11 and later
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Your device feels sluggish and lags? Boost it with MemClean. MemClean is application that frees up RAM memory. Now supports devices back to iOS 11.
Useful QR Code Reader PRO
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A convenient QR Code Reader app has been released! This app is an easy, simple, and fast QR code reading application. Additionally, it is a handy QR code reader app that records your scan history. After launching the app, grant camera access, hold your device over a QR code, and scan it. The scanned QR code will be displayed at the top of the main screen. Tap it to open the browser and view the URL, or long-press to copy it to the clipboard and use the text as needed. After launching, tap the "Load Image" button and grant access to your photo library. Then, load an image containing a QR code, such as a screenshot, and the app will scan the QR code within the image. (In some cases, it may fail to read due to errors.) ※The 'PRO' version is a paid version without ads. The app's functionality is the same as the free version. [How to Use] - Point the camera at a QR code on the initial screen to scan it. - The top right button on the screen transitions to the main screen but skips QR code scanning. - The top left button on the screen scans a QR code from an image in the photo library. - The scanned content is displayed at the top of the main screen. - Tap to open the browser. - Long-press to copy to the clipboard. - QR code scan history is displayed at the bottom of the screen. - Delete all history with "Delete All History." - You can delete history individually. - Tapping on history entries also opens the browser. - Long-pressing history entries copies them to the clipboard. - Tap the "I" in the top right to view information about the app. - Use the back arrow in the top left to return to the initial QR code scanning screen. That's how to use the app. It is a simple, convenient, and fast QR code reading app! Download and try it today!
Screenshots
Verdict
The clearest difference is price: MemClean at Free against Useful QR Code Reader PRO's $2.99. MemClean also leads on iOS requirement (11.0 vs 15.6). Useful QR Code Reader PRO's advantage is ads (none vs shown) and update cadence (every 10 days vs every 4 months). On 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
MemClean is free to download; Useful QR Code Reader PRO costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MemClean ships an update every 4 months, Useful QR Code Reader PRO every 10 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | MemClean | Useful QR Code Reader PRO |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.2 (109 ratings) — better | — |
| Positive reviews | 78.9% of reviews | — |
| Number of ratings | 109 — better | — |
| Update frequency | Every 4 months | Every 10 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 15 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Martin Dimitrov | katapu.net |
Bugs and requests
MemClean
Reported bugs
6 issues- App crashes on iPad Pro 2021 with iOS 15.1
- Crashes during cleaning process
- Video ads freeze the app
- False 'memory low' popup messages
- Inconsistent cleaning results across devices
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- App becomes sluggish when displaying ads
Requested features
10 requests- Automatic background app closing
- Auto-run scheduler (hourly or customizable)
- More aggressive deep cleaning mode
- Display which apps are consuming RAM
- Gaming mode optimization
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- App to clean junk files and disk space
- Paid ad-free version
- Spanish language support
- Enhanced cleaning intensity (3x instead of 2x)
- Automatic mode without tab switching
Useful QR Code Reader PRO
Not enough reviews yet to summarise bugs or requests.
In-app purchases
MemClean
No in-app purchases
Useful QR Code Reader PRO
No in-app purchases
Questions
Is MemClean free?
Is Useful QR Code Reader PRO free?
Do MemClean or Useful QR Code Reader PRO have ads?
Which is updated more often, MemClean or Useful QR Code Reader PRO?
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