Comparison

TC Organizer vs Time Duration/Add Calculator

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

Head to head
About

TC Organizer

This utility app calculates and predicts timecode conversions between various broadcast and film industry standards, including 23.98, NTSC 29.97, and PAL 25. It offers source and target modes for flexible workflow integration.

Highlights
  • Timecode conversion (23.98, 29.97, 25)
  • Source and Target calculation modes
  • Supports NTSC and PAL standards
  • EDL (CUT point) timecode display
  • Adjustable TC sync points (0H, 1H, 10H)
  • Frame-to-frame and pull-down conversion assumptions
Features
Read full description

Essential app for all the professionals in the broadcast and film industry. Calculate and predict the Timecode(TC) between any combinations among 23.98(24), NTSC 29.97(30), and PAL 25. The Description field in the middle will show which conversion methods would be used for the conversion. The calculation is assuming users use 2-3 pull-down or removing-2-3-pull-down methods for the conversions between 23.98(24) and NTSC 29.97(30). It is assuming users use frame-to-frame conversions between 23.98(24) and PAL(25). All the timecode(TC) is shown as EDL(TAPE DECK) way, so the timecode is your CUT point. It is not the editing software's way such as OUT point, 1 frame shorter than CUT point. How to use in general: User Interface can be split into 4 sections: 1. Mode - you can choose "Source" or "Target" mode. Set "Source" if you know the source TC and want to know the converted TC. Set "Target" mode if you know the target TC and want to know your source TC. 2. TC Input - click the TC input Field, then the numeric keyboard will pop-up. Please type the timecode with numbers only and press any other area than numeric pad as enter. Depending on your input timecode's hour, the Sync point will be automatically chosen. Then you can set your TC Type as 23.976, 29.97 NDF, 29.97DF, and 25. 3. Description - show which conversion methods will be used 4. TC Output - show the calculated or predicted TC with duration. You can set the target TC Type as 23.976, 29.97NDF, 29.97DF, and 25. As often the broadcasters use different starting TC point between 1 hour and 10 hour, you can choose the different TC sync point among 0H, 1H, and 10H. Example 1, "Source Mode": if you have your master in 23.98 and you like to know how long it would be after frame-to-frame conversion to PAL. Please put your source TC, then it will predict your PAL TC and duration for you. Example 2, "Target Mode": if your broadcaster wants to make 22:30 Drop frame show with film look and you shot as 23.98 and like to edit in 23.98, please change to "Target Mode" and put your 22:30 timecode and choose drop frame in the input TC Type, then it will calculate your 23.98 TC for your editing. I hope this app can help you in many of your projects.

About

Time Duration/Add Calculator

Easily calculate elapsed time between two points or determine an end time based on a start time and duration. It also converts time into various units like days, hours, minutes, and seconds.

Highlights
  • Calculate elapsed time from start and end times
  • Calculate end time from start time and elapsed duration
  • Display time between start and end dates/times
  • Convert time into days, hours, minutes, and seconds
  • Easily enter current time
  • Calculate time before a given duration
Features
Read full description

It is an application that can easily calculate the elapsed time from the time and the time from the elapsed time. You can also display the time between the start date and time and the end date and time in terms of hours, minutes, seconds, etc. ・Calculate from start time and end time Enter the start time and end time to calculate the elapsed time. Elapsed time can be checked in terms of hours, minutes, and seconds, and the current time can be easily entered. ・Calculated from start time + elapsed time Calculate the end time with the start time and elapsed time. You can also ask for the time before the elapsed time. ・Calculate from the start date and time and the end date and time Enter a start date and time and an end date and time to calculate the elapsed time. Elapsed time can also be checked in terms of hours, minutes, and seconds. ・Calculated from start date and time + elapsed time Enter the start date and time and elapsed time to calculate the end date and time. ・Time conversion The entered time is displayed in day/hour/minute/second, converted to days, converted to hours, converted to minutes, or converted to seconds. You can also convert 1000 seconds into minutes and seconds, or convert hours into days.

Screenshots

TC Organizer3 screens
Time Duration/Add Calculator4 screens

Verdict

The call

The clearest difference is review sentiment: TC Organizer at 100% against Time Duration/Add Calculator's 25%. TC Organizer also leads on ads (none vs shown). Time Duration/Add Calculator's advantage is price (Free vs $1.99) and update cadence (every 9 months vs every 73 months). On in-app purchases 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

Time Duration/Add Calculator is free to download; TC Organizer costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TC Organizer ships an update every 73 months, Time Duration/Add Calculator every 9 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
TC Organizer versus Time Duration/Add Calculator: the parameters behind the verdict, then further details
ParameterTC OrganizerTime Duration/Add Calculator
Price$1.99Free — better
Rating—1.0 (1 ratings) — better
Positive reviews100.0% of reviews — better25.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 73 monthsEvery 9 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size39 MB17 MB
Age rating4+4+
DeveloperKYOUNG KUEN CHUNGKouji Yamauchi

Customer experience

TC Organizer

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Time Duration/Add Calculator

Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

In-app purchases

None

TC Organizer

No in-app purchases

None

Time Duration/Add Calculator

No in-app purchases

Questions

Is TC Organizer free?
TC Organizer costs $1.99, with no in-app purchases.
Is Time Duration/Add Calculator free?
Time Duration/Add Calculator is free to download, with no in-app purchases.
Do TC Organizer or Time Duration/Add Calculator have ads?
Time Duration/Add Calculator shows ads; TC Organizer does not.
Which is updated more often, TC Organizer or Time Duration/Add Calculator?
TC Organizer ships an update every 73 months, and Time Duration/Add Calculator every 9 months. Most recently, TC Organizer was updated on November 1, 2026 and Time Duration/Add Calculator on November 3, 2026.

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