Back vs Date.Time Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Back
This utility app subtracts entered time values from a starting point of 60:00. It allows for easy deletion of individual entries or clearing all values to start fresh. Ideal for quick time calculations.
- Subtracts entered time values
- Starts at 60:00
- AC button to clear all
- Swipe to delete individual entries
- Simple user interface
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The Back-Time Calculator application allows you to enter time values to determine a back-time. The calculator starts at 60:00. You enter your time and press the enter button. Your time is subtracted from the current back-time value. When you want to start over, press the AC button to clear all entered values. You can also swipe individual times in the list to delete individual time entries.
Date.Time Calculator
Calculate date and time differences, intervals, and perform unit conversions with a pure calculator interface. Useful for determining future or past dates, calculating total time for multiple events, and converting between various time units and POSIX time.
- Date and time point calculations
- Time interval calculations
- Unit conversion of time
- POSIX time interconversion
- Time zone mutual conversion
- Arithmetic operations with time
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Date.Time Calculator lets you easily perform calculations involving dates, times, and time intervals, as well as convert between units of time — all with the familiar feel of a calculator. Date.Time Calculator supports the following operations: * Basic arithmetic with numbers (integers and decimals) * Arithmetic with numbers and Time Intervals * Operations between Time Intervals (addition, subtraction, and division) * Operations between Time Intervals and Time Points (addition and subtraction) * Operations between Time Points (calculating the difference) * Conversion between units of time * Conversion to and from POSIX Time * Conversion between time zones Date.Time Calculator is especially useful for questions such as: * What date is 100 days from today? * What date and time was it 32,768 seconds ago? * If one lap takes 1 minute 32.6 seconds, how long will 62 laps take? * What time will it be after those 62 laps? * How many days have passed since January 23 of this year? * How many days are 100,000 seconds? * What date and time does POSIX Time 1234567890 represent? * What is the current time in POSIX Time? And with a little creativity, Date.Time Calculator can be useful in many other situations as well.
Screenshots
Verdict
The clearest difference is review sentiment: Back at 100% against Date.Time Calculator's 0%. Back also leads on chart position (#171 vs unranked) and iOS requirement (13.0 vs 15.6). On price, update cadence, ads and in-app purchases 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
Back costs $0.99 and Date.Time Calculator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Back ships an update every 7 months, Date.Time Calculator every 5 months. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.
| Parameter | Back | Date.Time Calculator |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 7 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #171 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Goodman Productions | Noriaki HASHIBA |
Customer experience
Back
Date.Time Calculator
In-app purchases
Back
No in-app purchases
Date.Time Calculator
No in-app purchases
Questions
Is Back free?
Is Date.Time Calculator free?
Do Back or Date.Time Calculator have ads?
Which is updated more often, Back or Date.Time Calculator?
Other comparisons
