Comparison

WhenDo vs Date Time Calculator

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

Head to head
About

WhenDo

Easily manage and visualize time differences with friends and loved ones. Share your availability visually using photos instead of clock icons, eliminating confusing time zone conversations. Works offline for convenient access anytime, anywhere.

Highlights
  • Visual time zone display
  • Photo-based friend representation
  • Simplified availability sharing
  • Offline functionality
  • Selfie integration for cities
  • Easy friend setup
Features
Read full description

*You don't need to think about time zones* WhenDo shows your time below. The time of your friends/lovers up top. WhenDo prefers photos over clock icons. Because we’re all beautiful. No more confusing conversations to see when your friends are free. WhenDo makes it easy to share a time, visually. WhenDo works offline so you can check any city, at any time. More of this: • Take a selfie & set your city • Setup your friends • Pick a time that looks good • Share it Less of this: - When do you want to talk? -- Sunday? - Could work. At what time?? -- I’m free at 9. - Do you mean 9:00, my time? -- Haha. Nope. I meant 9 here. - You know that’s 4am for me? -- Oh. :(

About

Date Time Calculator

Calculate the precise difference between two dates and times, down to the millisecond. Offers detailed breakdowns including days, hours, minutes, and seconds, with options to view weekdays or weekends only. Share your results easily with a clean, adaptable interface.

Highlights
  • Intuitive date and time setting
  • Calculate days, months, years
  • Detailed hour, minute, second, millisecond counts
  • Weekday and weekend specific calculations
  • One-tap result sharing
  • Light and dark mode options
Features
Read full description

Tickr — Your Life in Numbers Count down to the moments that matter. Calculate dates with precision. Discover how many heartbeats you've lived. COUNTDOWN & EVENTS • Create custom countdowns for birthdays, weddings, vacations, and milestones • Add a birthday in one tap and see age and days-to-birthday instantly • Sync your events to your calendar, with built-in public holidays • Organize events with categories (Birthday, Health, Milestone, and custom) • Get reminders before your events • Sync across all your devices with iCloud AGE & LIFE STATS • Discover your exact age in years, months, and days • See how many times your heart has beat since birth • Count your breaths, full moons witnessed, and sleep cycles • Beautiful visualizations of your life in numbers DATE & TIME CALCULATOR • Calculate the exact difference between any two dates • View results in days, weeks, months, years, hours, minutes, seconds, and milliseconds • Filter by weekdays only or weekends only, include the start day, or exclude specific dates • Time zone support for date & time calculations • Date and time adjustment calculator SHARE BEAUTIFUL CARDS • Create stunning countdown cards for social media • Share your life stats as beautiful graphics • Multiple templates: Gradient, Minimal, Bold, Nature • Stories and Square formats for Instagram, TikTok, and more WIDGETS • See your countdown on your Home Screen every day • Lock Screen widgets keep your events in sight • Choose which event to display • Beautiful gradient designs MORE FEATURES • Full dark mode support — follows your system appearance • Siri Shortcuts support • One-tap sharing of calculations • Quick actions from home screen Whether you're counting down to your wedding, tracking how old you are in heartbeats, or calculating business days between dates — Tickr is your all-in-one time companion.

Screenshots

WhenDo4 screens
Date Time Calculator4 screens

Verdict

The call

The clearest difference is in-app purchases: WhenDo at none against Date Time Calculator's 3. WhenDo also leads on iOS requirement (9.0 vs 17.6). On price, ads, monetization model 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

Both are free to download. Date Time Calculator sells 3 one-off in-app purchases. WhenDo asks for nothing beyond the download.

Scorecard2 real differences · 8 level
WhenDo versus Date Time Calculator: the parameters behind the verdict, then further details
ParameterWhenDoDate Time Calculator
PriceFreeFree
Rating—5.0 (7 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—7 — better
Update frequency—Fortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better17.6
Further details — not scored
Size50 MB5 MB
Age rating4+4+
DeveloperKent HumphriesS Ravi Shankar

Customer experience

WhenDo

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Date Time Calculator

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

WhenDo

No in-app purchases

3 purchases

Date Time Calculator

One-time3
  • Small Tip - Support Date Diff$0.99
  • Medium Tip - Support Date Diff$2.99
  • Big Tip - Support Date Diff$4.99

Questions

Is WhenDo free?
WhenDo is free to download, with no in-app purchases.
Is Date Time Calculator free?
Date Time Calculator is free to download, with in-app purchases available.
Do WhenDo or Date Time Calculator have ads?
Neither WhenDo nor Date Time Calculator shows ads.

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