Comparison

Date and Time Calculator Pro vs Only QR Code

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

Head to head
About

Date and Time Calculator Pro

Calculate the precise time difference between any two dates and times, down to the second. Easily determine future or past dates based on a specified duration. Ideal for tracking events, financial periods, or personal milestones.

Highlights
  • Calculate time distance between dates
  • Calculate days after a specific date
  • Calculate date before a specific date
  • Second-level precision
  • Period time calculation
Read full description

Want to know how many days you can receive the Christmas gift? Want to know how many days you will have the college entrance exam?Want to know how many days the 158-day wealth management product expired? This tool helps you to calculate the distance between any time, down to second. It can also calculate the day after that day between any time. This tool is not only for wealth management but also for period time. It can tell you the date before or after a certain period.

About

Only QR Code

Features
Read full description

Only QR Code does one thing and does it well: QR codes, in and out, with nothing in the way. Type a link, a message, a phone number or your Wi-Fi details and the code appears as you type. Point the camera at any QR code and read it on the spot. No account, no clutter and no internet needed to make a code. MAKE - QR codes from text, URLs, email addresses, phone numbers or Wi-Fi credentials - Sizes from 128 to 512 pixels, sharp enough for a flyer or a phone screen - Your own foreground and background colors - Error correction you control (L, M, Q, H), so a code survives a logo or a scuffed print - Save as a clean PNG or share straight to Messages, Mail, AirDrop or any app READ - Scan any QR code with the camera and see what it says SIMPLE AND PRIVATE - Free, with an occasional ad between uses on iPhone and iPad. The Mac version has no ads - If you bought the app, you never see ads - No account or sign-up - No analytics or tracking by the app itself; the ad SDK collects only what it needs to serve ads - Making codes needs no internet connection - Your codes and images stay on your device - Open source: https://github.com/TylerStacie2005/only-qrcode Fast, small and honest. That is the whole app.

Screenshots

Date and Time Calculator Pro3 screens
Only QR Code3 screens

Verdict

The call

The clearest difference is price: Only QR Code at Free against Date and Time Calculator Pro's $0.99. Only QR Code also leads on device support (4 vs 2). Date and Time Calculator Pro's advantage is ads (none vs shown). On update cadence, in-app purchases 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

Only QR Code is free to download; Date and Time Calculator Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 weeks. Both last shipped on November 13, 2026.

Scorecard3 real differences · 7 level
Date and Time Calculator Pro versus Only QR Code: the parameters behind the verdict, then further details
ParameterDate and Time Calculator ProOnly QR Code
Price$0.99Free — better
Rating4.8 (963 ratings) — better—
Positive reviews88.9% of reviews—
Number of ratings963 — better—
Update frequencyEvery 5 weeksEvery 5 weeks
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.015.0
Further details — not scored
Size3 MB9 MB
Age rating4+4+
Developer山 钟Tyler Mecham

Bugs and requests

Date and Time Calculator Pro

Reported bugs

3 issues
  • Paid version has lost the ability to calculate future dates based on weeks
  • Date selection uses a scroll wheel instead of keypad entry
  • Unable to copy or share calculation results

Requested features

5 requests
  • Add ability to change year for date time calculation
  • Implement dark mode
  • Add iPad version
  • Add divide option in time calculator
  • Add ability to calculate working days

Only QR Code

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Date and Time Calculator Pro

No in-app purchases

None

Only QR Code

No in-app purchases

Questions

Is Date and Time Calculator Pro free?
Date and Time Calculator Pro costs $0.99, with no in-app purchases.
Is Only QR Code free?
Only QR Code is free to download, with no in-app purchases.
Do Date and Time Calculator Pro or Only QR Code have ads?
Only QR Code shows ads; Date and Time Calculator Pro does not.
Which is updated more often, Date and Time Calculator Pro or Only QR Code?
Date and Time Calculator Pro ships an update every 5 weeks, and Only QR Code every 5 weeks. Most recently, Date and Time Calculator Pro was updated on November 13, 2026 and Only QR Code on November 13, 2026.

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