Comparison

DekaClock vs QR Code Scanner · Barcode Scan

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

Head to head
About

DekaClock

Features
Read full description

Did you ever notice, the time of the day is based on odd numbers? So, a day is split into 24 hours, an hour is split into 60 minutes and a minute is split into 60 seconds. Strange, isn't it? Since in many cultures nowadays our numbering system is based on the base of 10, the usual time structure as stated above, leads to some strange counting artefacts. DekaClock attempts to solve this by introducing a time-system strictly based on the base 10. The different tiers required will not be named hour, minute, etc. to avoid confusion, but rather "deka-1, "deka-2", ..., at least until a better naming comes up. "Deka" is the greek name for 10, so the name is very suitable. Since the duration of a second is a very tangible and the shortest time-period in the traditional time scheme, the DekaClock needs to come up with something similar. A traditional day has 24 * 60 * 60 = 86,400 seconds. So, the DekaClock day has 100,000 deka-5 periods, since ist has to be a number by an integer power of 10. Naturally by this, the DekaClock scheme has 5 tiers to give an accurate time of the day: deka-1, deka-2, deka-3, deka-4 and deka-5. A deka-5 period therefore is slightly shorter than a second, concretely 0.864 seconds. But this is close enough to "feel" the ticking of the clock correctly, as the passing of time in DekaClock shows. To give the full time of the day, consequently 5 single digit numbers from 0 to 9 are required. They are given separated by a colon each. For example midday is 5:0:0:0:0, 6am is 2:5:0:0:0 and 6pm is 7:5:0:0:0. So, a deka-1 period of time is a tenth of a full day of 24 hours, thus encompasses 2 hours and 24 minutes. The time of day "9 deka-1" as example refers to 9:36pm on our standard clock. A good time to go to bed.

About

QR Code Scanner · Barcode Scan

Features
Read full description

Scan any QR code or barcode instantly with the fastest QR Code Scanner and Generator app on iPhone. Whether you need to scan a product barcode, read a WiFi QR code, or create your own QR code in seconds - this app does it all. Perfect for students, professionals, small businesses, and everyday use. KEY FEATURES QR CODE SCANNER - Scan any QR code instantly using your camera - Supports URLs, WiFi, contacts, email, SMS, UPI, vCard and more - Works in low light and at any angle - Scan QR codes from photos and gallery images BARCODE SCANNER - Scan product barcodes, UPC, EAN, Code 128 and more - Instantly get product details and information - Perfect for shopping, inventory and business use QR CODE GENERATOR - Create QR codes for websites, WiFi, contacts, text and more - Generate UPI payment QR codes instantly - Share QR codes via email, messages and more - Save generated QR codes to your photo library BATCH SCANNING - Scan multiple QR codes and barcodes one after another - No need to restart - perfect for events, classrooms and businesses - Save time with continuous scanning mode SCAN HISTORY - All scanned and generated QR codes saved automatically - Quickly revisit, copy or reshare any past code - Organized history with full details of every scan EASY SHARING - Share QR codes instantly via email, messages and more - Export scan history for business use - Simple one tap sharing to any app PERFECT FOR Students and teachers - share WiFi, links and notes via QR Small businesses - scan products, share payment QR codes Event organizers - batch scan tickets quickly Professionals - share contact info via vCard QR codes Everyday use - scan restaurant menus, UPI payments and more WHY CHOOSE US 100 percent free to download Works offline - no internet needed to scan No account or login required Clean, simple interface - no confusing menus Fast and accurate - scans in under 1 second Privacy first - we collect zero user data HOW TO USE 1. Open the app and point camera at any QR code or barcode 2. Code is scanned instantly - no button to press 3. Tap Generate to create your own QR code in seconds 4. View full scan history anytime in the History tab 5. Share any QR code with one tap Download free today and scan smarter. Step 5 — Export in full HD and share on Instagram, Facebook or anywhere Privacy Policy: https://sites.google.com/view/kalkani-privacy-policy/home Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

DekaClock4 screens
QR Code Scanner · Barcode Scan4 screens

Verdict

The call

The clearest difference is in-app purchases: DekaClock at none against QR Code Scanner · Barcode Scan's 3. QR Code Scanner · Barcode Scan's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. QR Code Scanner · Barcode Scan sells 3 in-app purchases, starting at $0.49 per month. DekaClock asks for nothing beyond the download.

UpkeepUpdate frequency

DekaClock ships an update every 2 months, QR Code Scanner · Barcode Scan every 3 weeks. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 4 level
DekaClock versus QR Code Scanner · Barcode Scan: the parameters behind the verdict, then further details
ParameterDekaClockQR Code Scanner · Barcode Scan
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size2 MB5 MB
Age rating4+9+
DeveloperCarsten TraupeVishal Kalkani

In-app purchases

None

DekaClock

No in-app purchases

3 purchases

QR Code Scanner · Barcode Scan

Subscriptions2
  • Monthly Pro Access$0.491 Month
  • Yearly Pro Access$3.491 Year
One-time1
  • Lifetime Pro Access$4.99

Questions

Is DekaClock free?
DekaClock is free to download, with no in-app purchases.
Is QR Code Scanner · Barcode Scan free?
QR Code Scanner · Barcode Scan is free to download, with in-app purchases available.
Do DekaClock or QR Code Scanner · Barcode Scan have ads?
Neither DekaClock nor QR Code Scanner · Barcode Scan shows ads.
Which is updated more often, DekaClock or QR Code Scanner · Barcode Scan?
DekaClock ships an update every 2 months, and QR Code Scanner · Barcode Scan every 3 weeks. Most recently, DekaClock was updated on October 1, 2026 and QR Code Scanner · Barcode Scan on October 6, 2026.

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