Date.Time Calculator vs SJ Age Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
SJ Age Calculator
Quickly determine a client's age group and associated benefits based on their birth year. Ideal for professionals in industries like travel and hospitality needing to apply age-based rules instantly and accurately.
- Instant age group identification
- Display associated rights/benefits
- Customizable age groups and ranges
- Manage multiple rule profiles
- Fast, simple, and efficient design
- Clear interface for professional use
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SJ Age Calculator is an application designed for professionals who need to quickly identify a client’s age group based on their birth year. This tool is particularly useful in industries such as air transport, hospitality, tourism, or ticketing, where rights or pricing often depend on age. The app simplifies on-site work by providing instant and reliable age group identification. The application automatically displays the customized age group corresponding to the client’s birth year, whether it is baby, child, adult, senior, or any other defined category. It also shows the rights or benefits associated with that age group, such as free access, reduced rates, or special treatment, helping users make decisions without manually consulting complex rules. Each age group can be fully configured, allowing the definition of names, age ranges, and associated benefits, ensuring precise adaptation to the rules in force within each company or sector. SJ Age Calculator also supports managing multiple rule profiles, enabling quick adaptation of the tool according to different internal policies or varied professional contexts like airlines, events, or public institutions. Users can easily switch between profiles depending on the situation and specific needs, offering great flexibility. Designed to be fast, simple, and efficient, this free app is ideal for professionals who need to apply age-related conditions accurately and without wasting time. Its clear interface, adapted for professional use, ensures easy handling and smooth daily operation. SJ Age Calculator is a comprehensive and effective solution for any situation where quick age group identification is essential, eliminating manual calculations and approximations while ensuring full compliance with applicable rules.
Screenshots
Verdict
The clearest difference is price: SJ Age Calculator at Free against Date.Time Calculator's $0.99. SJ Age Calculator also leads on update cadence (every 5 days vs every 5 months). Date.Time Calculator's advantage is in-app purchases (none vs 5) and ads (none vs shown). On device support 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
SJ Age Calculator is free to download; Date.Time Calculator costs $0.99 up front. SJ Age Calculator sells 5 one-off in-app purchases. Date.Time Calculator asks for nothing beyond the download.
Date.Time Calculator ships an update every 5 months, SJ Age Calculator every 5 days. The most recent releases landed on October 13, 2026 and October 23, 2026 respectively.
| Parameter | Date.Time Calculator | SJ Age Calculator |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 months | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Noriaki HASHIBA | Stephane JAILLIARD |
Customer experience
Date.Time Calculator
SJ Age Calculator
In-app purchases
Date.Time Calculator
No in-app purchases
SJ Age Calculator
- A coffee$0.99
- A cookie$2.99
- No ads$4.99
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- A lemon tart$4.99
- A pizza$9.99
Questions
Is Date.Time Calculator free?
Is SJ Age Calculator free?
Do Date.Time Calculator or SJ Age Calculator have ads?
Which is updated more often, Date.Time Calculator or SJ Age Calculator?
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