Digital Alarm vs Date.Time Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Digital Alarm
This all-in-one alarm clock transforms your device into a versatile alarm system. Wake up to your favorite music, radio stations, or custom recordings. It also features a sleep timer to help you drift off peacefully.
- Wake up with custom playlists or radio
- Sleep timer with music or radio
- Customizable clock appearance
- Multiple alarm creation
- Background and offline alarm support
- Adjustable snooze and alarm volume
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The Digital Alarm Clock turns your iPhone into an All-In-One alarm clock with an alarm that play your favorite music, your favorite radio station, your own records or just a ringtone. With the Sleep timer you can fall asleep comfortably with your own playlist or your self-defined radio! ************************************************** - Wake up with your favorite music. You can either choose a playlist, a radio station or a record. - Define your own radio station, or choose one from the online catalog - Fall asleep to relaxing music from your playlist or by a radio station ************************************************** Details: * Clock * - Vertical and horizontal modes - Displays the next alarm time - Display the current weather (optional) - Click on weather-label to show 5-day forecast - Direct launch the Sleep timer with volume control - Set up your own colors for the background, clock and shadow * Alarm clock * - Create multiple alarm clocks - Create your own playlists with songs for the alarm clock Wake-up services: - ringtone - playlist - radio - record - Radio- and Playlistalarm only works if App is running in Foreground - 1 integrated alarm-tone - Huge "Snooze" - / "Alarm" buttons - Snooze time freely adjustable - Adjustable alarm volume - The alarm works even when the screen lock is activated - Background Alarm: you will receive alarm notifications when the app is not running! - Offline Alarm: Alarm with Ringtone, if no Internet connection * Sleep Timer * - Create your own playlist with songs for the sleep timer - Select a radio station to fall asleep - Select the Sleep Timer duration * Tips * - You can dim the screen by dragging your finger over it - Pressing long on Pause-Button you can choose the sleeping duration Get this app now before the price goes up and take advantage of the FREE updates! Before you write a bad review, please contact me. Just so I can improve the app
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: Digital Alarm at 59% against Date.Time Calculator's 0%. Digital Alarm also leads on update cadence (every 2 months vs every 5 months) and iOS requirement (12.1 vs 15.6). Date.Time Calculator's advantage is price ($0.99 vs $4.99). On ads, in-app purchases, monetization model 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
Digital Alarm costs $4.99 and Date.Time Calculator $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Digital Alarm ships an update every 2 months, Date.Time Calculator every 5 months. Both last shipped on November 1, 2026.
| Parameter | Digital Alarm | Date.Time Calculator |
|---|---|---|
| Price | $4.99 | $0.99 — better |
| Rating | 3.3 (4 ratings) — better | — |
| Positive reviews | 59.4% of reviews — better | 0.0% of reviews |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 12 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Markus Wyss | Noriaki HASHIBA |
Customer experience
Digital Alarm
Date.Time Calculator
In-app purchases
Digital Alarm
No in-app purchases
Date.Time Calculator
No in-app purchases
Questions
Is Digital Alarm free?
Is Date.Time Calculator free?
Do Digital Alarm or Date.Time Calculator have ads?
Which is updated more often, Digital Alarm or Date.Time Calculator?
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