Comparison

ZoneTime vs Calculator ×

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

Head to head
About

ZoneTime

Easily compare timezones to schedule meetings and avoid calling people at inconvenient hours. The app features a widget for quick glances and a table to compare up to 20 locations, automatically adjusting for Daylight Saving Time.

Highlights
  • View overlapping timezone hours
  • Schedule meetings across timezones
  • Today Widget for quick time checks
  • Compare up to 20 locations
  • Color-coded 'OK to call' times
  • Automatic Daylight Saving Time adjustment
  • Create calendar events across timezones
Features
Read full description

ZoneTime offers a quick and easy way to view overlapping timezone hours, and setup meetings. ZoneTime can help you: * stop waking up your friends and family when you call them overseas. * catch your international colleagues while they're still in the office. * compare timezones between a flight's origin and destination. Included Features * ZoneTime Today Widget now allows you to quickly glance at times across your configured locations without needing to open the app, or unlock you phone. * An easy to use table to compare today's times for up to 20 locations at a time. * Choose from cities from around the globe * Color codes times based on whether it's 'OK' to call. * Automatically adjusts for Daylight Saving Time for each Location. * Edit and rearrange locations you want to compare timezones. * Compare timezones in landscape or portrait orientation. * Create an calendar event across multiple timezones

About

Calculator ×

This app redefines the calculator experience for touch-screen devices with a modern, intuitive design. It offers features like a tape log for storing calculations, formula evaluation, and iPad multitasking support for enhanced productivity.

Highlights
  • Tape Log for calculation history
  • Reuse, copy, and share calculations
  • Evaluate entire formulas at once
  • iPad multitasking support
  • Modern touch-screen design
Features
Read full description

Designed exclusively for today's touch-screen devices, this calculator app represents a groundbreaking paradigm shift, leaving behind the outdated design patterns of mechanical calculators. We have meticulously crafted a new design from scratch, keeping modern touch-screen devices at the forefront of our innovation. • Tape Log: All your calculations are securely stored in the tape log, ensuring you never lose track of your numerical journey. • Calculation Management: Effortlessly reuse, copy, or share calculations to integrate them seamlessly into your work or daily life. • Formula Evaluation: Enter entire formulas in one line for swift and accurate evaluation, simplifying complex calculations. • iPad Multitasking: Experience true productivity with iPad multitasking support, enabling you to perform calculations while using other apps through Slide Over and Split View. Calculator Pro represents a powerful departure from traditional calculators, offering a tailored experience for touch-screen devices. Download now and embrace a new era of calculations with maximum control and power at your fingertips. Terms of Use: https://doubleuapp.com/privacy/terms.html

Screenshots

ZoneTime4 screens
Calculator ×4 screens

Verdict

The call

The clearest difference is rating: ZoneTime at 5.0 against Calculator ×'s 4.5. ZoneTime also leads on in-app purchases (none vs 4) and ads (none vs shown). Calculator ×'s advantage is ratings volume (143 vs 1). On price, update cadence 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. Calculator × sells 4 in-app purchases, starting at $4.99 per year. ZoneTime asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ZoneTime holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Calculator × has 143 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of ZoneTime's written reviews are positive against 73% of Calculator ×'s.

UpkeepUpdate frequency

ZoneTime ships an update every 3 months, Calculator × every 2 months. The most recent releases landed on September 9, 2026 and September 21, 2026 respectively.

Scorecard7 real differences · 3 level
ZoneTime versus Calculator ×: the parameters behind the verdict, then further details
ParameterZoneTimeCalculator ×
PriceFreeFree
Rating5.0 (1 ratings) — better4.5 (143 ratings)
Positive reviews100.0% of reviews — better73.3% of reviews
Number of ratings1143 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better13.6
Further details — not scored
Size26 MB10 MB
Age rating4+4+
DeveloperGlen TregoningDOUBLE U s.r.o.

Customer experience

ZoneTime

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Calculator ×

All ratings143 ratings
Positive89.5%
Neutral4.2%
Negative6.3%
Written reviews15 reviews
Positive73.3%
Neutral6.7%
Negative20.0%

In-app purchases

None

ZoneTime

No in-app purchases

4 purchases

Calculator ×

Subscriptions1
  • Premium Yearly$4.991 Year
One-time3
  • Remove ads$4.99
  • Remove ads$7.99
  • Remove ads$11.99

Questions

Is ZoneTime free?
ZoneTime is free to download, with no in-app purchases.
Is Calculator × free?
Calculator × is free to download, with in-app purchases available.
Which has better reviews, ZoneTime or Calculator ×?
ZoneTime is rated higher. ZoneTime averages 5.0 out of 5 from 1 ratings, while Calculator × averages 4.5 from 143 ratings.
Do ZoneTime or Calculator × have ads?
Calculator × shows ads; ZoneTime does not.
Which is updated more often, ZoneTime or Calculator ×?
ZoneTime ships an update every 3 months, and Calculator × every 2 months. Most recently, ZoneTime was updated on September 9, 2026 and Calculator × on September 21, 2026.

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