Comparison

CATQR Class Attendance Tracker vs Real Image Compressor

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CATQR Class Attendance Tracker

This free utility digitizes class attendance using QR codes. Scan codes to record attendance, view history, and manage records. Organizers can track attendance in real-time and export data.

Highlights
  • QR code scanning for attendance
  • Scan history and calendar storage
  • Real-time attendance tracking for organizers
  • Export attendance data to Excel
  • Searchable scan history
  • Access internet links from QR codes
Features
Read full description

Free, no ads and beautifully presented QR Code Scanner for class attendance. • Free app. • No ads. • Fast, secure and easy to use. • Simply point the app camera at any QR Code to see the decoded results instantly! • CATQR app conveniently stores your QR Code scan history and class attendance in the app calendar. • Click on the Year or Month to see your scan history records for that period. • Click on the Date to toggle on/off your scan history records on that day. • Search by keyword and get an e-mail of your scan history. • Swipe Right on your scan history record to reveal the QR Code. • Swipe Left on your scan history record to delete the record. • If you scanned an internet link you will see an icon on the scan history record, click on the icon to go to the internet link. ORGANISER ANALYTICS Organisers using the CATQR website can create a CATQR Code for a specific class and track attendance in real-time!! 1. Students using their own CATQR app in the classroom can scan the Organiser’s CATQR Code for that specific class. The Student will see the Organiser’s CATQR Code Class Title, Date/Time and the Organiser’s name in their CATQR app scan history. 2. The Organiser can see the students that have attended their specific class in real-time. 3. The Organiser can also export the student attendance to an Excel spreadsheet. Find out more by visiting https://www.catqr.com

About

Real Image Compressor

Features
Read full description

Real Image Compressor does what other apps only pretend to do: it truly compresses your JPEG photos instead of simply resizing them. You stay in full control of quality, metadata, and output. Why "real" compression matters Most photo compression apps just scale down your images. That changes the resolution and often ruins the photo. Real Image Compressor applies actual JPEG compression algorithms that significantly reduce file size while keeping your original resolution intact. You are in control Choose from three quality levels (Low, Medium, High) to find the perfect balance between file size and image quality. Decide whether to strip EXIF metadata like location data, camera info, and timestamps for added privacy, or keep it all. Multiple ways to compress Pick photos directly from your Photo Library or import from Files. You can also select images in the Photos app and share them straight into Real Image Compressor using the Share Sheet. No extra steps needed. See real results After compression, you get a clear overview of every image: original size, compressed size, and the percentage saved. In our tests, photos typically shrink by 60-75%. Save anywhere Export your compressed images back to the Camera Roll or save them to any folder using the Files app. Batch export all images at once with a single tap. Privacy first All compression happens on your device. Your photos are never uploaded anywhere. Optionally remove EXIF data to strip location info and other metadata before sharing your photos with others. Key Features True JPEG compression, not just resizing Three quality levels: Low, Medium, High EXIF metadata removal for privacy Import from Photos or Files Share Sheet integration for quick access Batch compression for multiple images Clear results with size comparison Export to Camera Roll or Files 100% on-device processing Download Real Image Compressor and start saving storage space today.

Screenshots

CATQR Class Attendance Tracker3 screens
Real Image Compressor4 screens

Verdict

The call

The clearest difference is price: CATQR Class Attendance Tracker at Free against Real Image Compressor's $2.99. On update cadence, 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

CATQR Class Attendance Tracker is free to download; Real Image Compressor costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CATQR Class Attendance Tracker ships an update every 12 months, Real Image Compressor every 7 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 9 level
CATQR Class Attendance Tracker versus Real Image Compressor: the parameters behind the verdict, then further details
ParameterCATQR Class Attendance TrackerReal Image Compressor
PriceFree — better$2.99
Rating4.7 (15 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings15 — better—
Update frequencyEvery 12 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.0
Further details — not scored
Size43 MB1 MB
Age rating4+4+
DeveloperShinetech Europe Ltd.Michael Welzel

In-app purchases

None

CATQR Class Attendance Tracker

No in-app purchases

None

Real Image Compressor

No in-app purchases

Questions

Is CATQR Class Attendance Tracker free?
CATQR Class Attendance Tracker is free to download, with no in-app purchases.
Is Real Image Compressor free?
Real Image Compressor costs $2.99, with no in-app purchases.
Do CATQR Class Attendance Tracker or Real Image Compressor have ads?
Neither CATQR Class Attendance Tracker nor Real Image Compressor shows ads.
Which is updated more often, CATQR Class Attendance Tracker or Real Image Compressor?
CATQR Class Attendance Tracker ships an update every 12 months, and Real Image Compressor every 7 months. Most recently, CATQR Class Attendance Tracker was updated on October 13, 2026 and Real Image Compressor on October 11, 2026.

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