Comparison

Time Calculator vs On Time

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

Head to head
About

Time Calculator

This comprehensive toolkit helps manage time, dates, and schedules with various calculators. Track work hours, plan shifts, convert time formats, and calculate differences between dates. Ideal for professionals, freelancers, and everyday users needing precise time management.

Highlights
  • Work time tracking
  • Shift scheduling
  • Date difference calculation
  • Countdown timers
  • Time zone comparison
  • Age calculation
  • Time conversion
Features
Read full description

Time Calculator is the ultimate all-in-one toolkit for managing time, dates, schedules, and more. Whether you’re tracking work hours, planning shifts, or converting time formats, this app has a calculator for every time-related need. Designed for professionals, freelancers, travellers, and everyday users alike. Included calculators: - Time Calculator Add or subtract hours, minutes, seconds, and days. Optionally apply an hourly rate for cost calculations. - Work Time Calculator Track working hours, salaries, and multiple jobs. Supports custom shifts and detailed breakdowns. - Shift Calculator Create and calculate rotating shift schedules with ease. - Date Calculator Find the difference between two dates in days, weeks, months, and years. - Time Difference Calculate the time between two clock times. - Countdown Set up countdown timers for upcoming events or deadlines. - Weekday Calculator Calculate how many weekdays and weekends are between two dates. - Add to Date Calculator Add days, weeks, months, or years to a starting date to see the resulting date. - Count Days Tap days on a calendar to count them - perfect for tracking Schengen or visa limits. - Days To/From Save countdown timers for any event and see how many days remain. - Add to Time Calculator Add hours and minutes to a specific time of day. - Age Calculator Add birthdays of friends and family to track their exact age. - Time Converter Convert between seconds, minutes, hours, and days. - Time Zone Calculator Add multiple time zones and compare times across regions. - Military Time Calculator Easily convert between 12-hour and 24-hour (military) formats. - Time to Decimal Convert standard time (like 2h 30m) to decimal format and back. --------------------------- Subscription terms: - The subscription auto-renews at the end of each term. - Payment will be charged to iTunes Account at confirmation of purchase. - The subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period. - You may manage your subscription and turn off auto-renewal by going to your Account Settings after purchase. Privacy policy and Terms of Use: https://oval.fi/privacy-policy-time-calculator

About

On Time

Features
Read full description

Know exactly when to get started — so you show up on time, every time. You know when you need to be there. The hard part is everything that has to happen first: getting the kids in the car, grabbing coffee, stopping for gas, picking up a gift. On Time counts back from your deadline through each of those steps and tells you the exact minute to start. HOW IT WORKS 1. Set your "Be There" or End time. 2. Add each thing you need to do first, with how many minutes it takes. 3. On Time adds it up and shows the time you need to get started. That's it. Change a step and your start time updates instantly. GREAT FOR • Getting to practice, school or work after a few errands • Getting ready for a dinner, party or date night • Appointments where you need to park, check in or fill out forms • Morning routines: shower, breakfast, drop-off, commute • Catching a flight, train or ride with time to spare • Anyone who always thinks "I have plenty of time" FEATURES • Count back from any end time • Unlimited steps, each with its own minutes • Drag to reorder steps; delete what you don't need • Running total of all your prep and travel time • Your list is saved automatically for next time • No account, no sign-up • Works offline Stop guessing. Start on time. Questions or ideas? Use Contact in the app menu — we read every message.

Screenshots

Time Calculator4 screens
On Time2 screens

Verdict

The call

The clearest difference is in-app purchases: On Time at none against Time Calculator's 6. Time Calculator's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 3 months). On price 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. Time Calculator sells 6 in-app purchases, starting at $2.99 per month. On Time asks for nothing beyond the download.

UpkeepUpdate frequency

Time Calculator ships an update every 2 weeks, On Time every 3 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Time Calculator versus On Time: the parameters behind the verdict, then further details
ParameterTime CalculatorOn Time
PriceFreeFree
Rating4.7 (2.9K ratings) — better—
Positive reviews78.8% of reviews—
Number of ratings2.9K — better—
Update frequencyEvery 2 weeks — betterEvery 3 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size17 MB18 MB
Age rating4+4+
DeveloperOval Software OyJMS TECHNOLOGY SYSTEMS

Bugs and requests

Time Calculator

Reported bugs

5 issues
  • Unable to upgrade
  • Calculator does not show hours, minutes and seconds. Only hour and minutes
  • Seconds don't work on a TIME calculator!
  • The last update is bad, it doesn't work!
  • The settings doesn't work after the last update

Requested features

12 requests
  • Overtime calculator
  • Decimals for time calculator
  • Ability to delete entries
  • Ability to edit or pick the days on the calendar
  • Ability to have the work time calculator on Mac
Show 7 more
  • Ability to calculate overtime including rate
  • Ability to convert time to AM/PM
  • Ability to display hours, minutes and seconds
  • Ability to divide the number of hours by days of the month
  • Ability to add multiple work shifts in a day
  • Ability to keep record of hours and weekly hours worked
  • Ability to add different pay rates for different types of work

On Time

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Time Calculator

Subscriptions4
  • Time Calculator Pro Monthly3 Days trial$2.991 Month
  • Time Calculator Premium Monthl3 Days trial$3.991 Month
  • Time Calculator Premium3 Days trial$14.991 Year
Show 1 more
  • Time Calculator Premium3 Days trial$19.991 Year
One-time2
  • Time Calculator Premium$19.99
  • Unlock all features$29.99
None

On Time

No in-app purchases

Questions

Is Time Calculator free?
Time Calculator is free to download, with in-app purchases available.
Is On Time free?
On Time is free to download, with no in-app purchases.
Do Time Calculator or On Time have ads?
On Time shows ads; Time Calculator does not.
Which is updated more often, Time Calculator or On Time?
Time Calculator ships an update every 2 weeks, and On Time every 3 months. Most recently, Time Calculator was updated on November 1, 2026 and On Time on October 30, 2026.

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