Timely vs Time Duration/Add Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Timely
Perform arithmetic operations on time spans and numbers with this free utility. Supports addition, subtraction, multiplication, and division, including percentages and modulus. It can also function as a standard calculator.
- Time span arithmetic
- Addition, subtraction, multiplication, division
- Percentage and modulus calculations
- Standard calculator functionality
- Supports decimals and order of operations
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Timely allows you to perform arithmetic operations between time spans and numbers! Addition, subtract, multiplication and division are all supported - no ads and completely free. Timely displays time spans as Hour:Minutes:Seconds with support for decimals and order of operations (PEMDAS/BODMAS), it can also be used as a normal calculator. Some examples of what you can do with Timely. - What pace is required to complete a 12km race in 50 minutes? 50:00 ÷ 12 = 4:10 min/km - Adding up timesheets for work. 07:30:00 + 01:00:00 + 02:25:00 = 10:55:00 Support for percentage and modulus are provided by the '%' key. - Percentage calculation 10:00 + 5% = 10:30 - Modulus calculation 50:00:00 % 24:00:00 = 02:00:00 You can tap on the number display to send me feedback if you encounter issues or have feature requests. Enjoy!
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.
- 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
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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
Verdict
The clearest difference is review sentiment: Timely at 88% against Time Duration/Add Calculator's 25%. Timely also leads on rating (2.0 vs 1.0) and ads (none vs shown). Time Duration/Add Calculator's advantage is iOS requirement (13.0 vs 15.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Timely holds the better App Store score, 2.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 88% of Timely's written reviews are positive against 25% of Time Duration/Add Calculator's.
Timely ships an update monthly, Time Duration/Add Calculator every 9 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Timely | Time Duration/Add Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (3 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 87.5% of reviews — better | 25.0% of reviews |
| Number of ratings | 3 — better | 1 |
| Update frequency | Monthly — better | Every 9 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 40 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Gatto | Kouji Yamauchi |
Customer experience
Timely
Time Duration/Add Calculator
In-app purchases
Timely
No in-app purchases
Time Duration/Add Calculator
No in-app purchases
Questions
Is Timely free?
Is Time Duration/Add Calculator free?
Which has better reviews, Timely or Time Duration/Add Calculator?
Do Timely or Time Duration/Add Calculator have ads?
Which is updated more often, Timely or Time Duration/Add Calculator?
Other comparisons
