Comparison

Digital Alarm vs Date.Time Calculator

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

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.

Highlights
  • Date and time point calculations
  • Time interval calculations
  • Unit conversion of time
  • POSIX time interconversion
  • Time zone mutual conversion
  • Arithmetic operations with time
Features
Read full description

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

Digital Alarm4 screens
Date.Time Calculator4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Digital Alarm ships an update every 2 months, Date.Time Calculator every 5 months. Both last shipped on November 1, 2026.

Scorecard4 real differences · 6 level
Digital Alarm versus Date.Time Calculator: the parameters behind the verdict, then further details
ParameterDigital AlarmDate.Time Calculator
Price$4.99$0.99 — better
Rating3.3 (4 ratings) — better—
Positive reviews59.4% of reviews — better0.0% of reviews
Number of ratings4 — better—
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.1 — better15.6
Further details — not scored
Size12 MB1 MB
Age rating4+4+
DeveloperMarkus WyssNoriaki HASHIBA

Customer experience

Digital Alarm

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews32 reviews
Positive59.4%
Neutral0.0%
Negative40.6%

Date.Time Calculator

Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

Digital Alarm

No in-app purchases

None

Date.Time Calculator

No in-app purchases

Questions

Is Digital Alarm free?
Digital Alarm costs $4.99, with no in-app purchases.
Is Date.Time Calculator free?
Date.Time Calculator costs $0.99, with no in-app purchases.
Do Digital Alarm or Date.Time Calculator have ads?
Neither Digital Alarm nor Date.Time Calculator shows ads.
Which is updated more often, Digital Alarm or Date.Time Calculator?
Digital Alarm ships an update every 2 months, and Date.Time Calculator every 5 months. Most recently, Digital Alarm was updated on November 1, 2026 and Date.Time Calculator on November 1, 2026.

Other comparisons