Comparison

CalAlarm Date Alarm Shift Work vs Superclock

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

Head to head
About

CalAlarm Date Alarm Shift Work

This app allows users to set alarms for specific, scattered dates, ideal for shift workers with irregular schedules. It rings even when the phone is on silent or in Do Not Disturb mode and offers features like custom ringtones and home screen widgets.

Highlights
  • Set alarms for specific, scattered dates
  • Rings in Silent & Do Not Disturb mode
  • Batch scheduling for entire months/years
  • Custom ringtones from Files app
  • Temporary alarms that self-delete
  • Home screen widgets for next alarm
Features
Read full description

CalAlarm · Custom Dates — Apple's built-in Clock can only repeat daily or weekly; it can't ring on scattered specific dates like "the 1st and 15th of each month." CalAlarm · Custom Dates is built for shift workers — alternating weeks (every-other-week schedule), rotating shifts, split shifts, day/night shifts that change constantly. Just check any specific dates on one alarm, and it still rings full-screen even when your phone is silent or in Do Not Disturb. Powered by iOS 26 system-level AlarmKit, so it never misses a ring even after the app is closed. 【What the built-in alarm can't do, CalAlarm · Custom Dates can】 · Batch-set specific dates: one alarm can cover any number of dates (e.g. the 1st and 15th, or next Wed & Fri) — no daily repeat required. · One-tap bulk scheduling: tick an entire upcoming month or a full year of weekdays, weekends, or all dates in a single tap — schedule a year of alarms in seconds. Alternating weeks, rotating/split shifts, irregular days off — even the most unpredictable routine is handled with ease. · Rings in Silent & DND: when your phone is muted or in Do Not Disturb, the alarm still takes over the Lock Screen full-screen — you'll never miss it quietly. · Calendar View: swipe through months; dates with an alarm are highlighted, tap to see what time it rings — which days have alarms is clear at a glance. 【More handy features】 · Custom ringtones: import any audio from the Files app or system Share sheet as your tone (auto-trimmed & looped); rings on time even with the app closed. · Temporary alarm: one-off reminder (15/30/60 min later) that deletes itself after ringing — no clutter in your daily list. · Snooze limit: cap the number of snoozes to beat the habit of oversleeping. · Home screen widgets: small/medium/large sizes show your next alarm and countdown at a glance — no need to open the app. 【Privacy First】 · No sign-up, no login — just open and use. · Collects and uploads zero personal data; all alarms stay on your device only. · No ads, no third-party tracking — a clean experience. 【Free & Pro】 Core features are free forever: up to 5 alarms, single-date alarms, custom ringtones, temporary alarms, snooze, widgets, and calendar view. Pro membership unlocks "multi-date ringing" and "unlimited alarms" (one alarm can have multiple ring dates, no limit on alarm count). New users get a 14-day free trial; auto-renews afterward, cancel anytime in Settings → Apple ID → Subscriptions. Important: This app is built on system alarm capabilities. We recommend testing your alarm setup before important events, and keeping your device charged and out of Airplane Mode. The developer is not liable for missed alarms caused by device failure or system settings. Download CalAlarm · Custom Dates now and take control — pick the dates, and it rings. Terms of Use: https://app.szwin.xyz/legal/clock/terms-of-service_en.html Privacy Policy: https://app.szwin.xyz/legal/clock/privacy-policy_en.html

About

Superclock

Features
Read full description

Superclock is an iPhone alarm app on Apple's AlarmKit. It rings like Clock and knows your day like Calendar. - Rings through silent, like Clock. - On any date, which Clock cannot do. A date months away, thirty minutes from now, or set by sunrise or a meeting. - Several alarms: 06:00, 06:10, 06:20 as one, until you are up. Stopping any one of them ends the rest. - Sunrise: Superclock uses your location to work out sunrise where you are, and asks Apple's WeatherKit for the weather there when an alarm follows it. - Meetings: an alarm that moves when the meeting moves, with Join. - Reminders: a reminder that actually rings, and ticks itself off. - A trip: your mornings, walked to their clock before you fly. - People: the time where the people you know live, and an alarm for a birthday or a regular call. - Shared alarms: share an alarm or a timer with your people. See when they are up. - Timers: count down and count up, and the timers you actually use, one tap from the Home Screen. - Limit: 15 min of Instagram, or any app, a day: then it rings or blocks. - Widgets on the Home Screen and the Lock Screen, and a Live Activity while an alarm rings or a timer counts down. - Siri and Shortcuts: set an alarm from a sentence, like "6am saturday airport run". - Claude: ask it to set or move an alarm, and it is on your iPhone in seconds, with Undo. Meetings, reminders and trips are one-time unlocks, or all three with Pro, which also includes every paid feature added later. Everything else is free. No subscription. Try every paid feature free for 7 days. Your alarms stay on this phone. An account is optional and free: sign in with Apple to let Claude set your alarms, and see them at superclock.app.

Screenshots

CalAlarm Date Alarm Shift Work4 screens
Superclock4 screens

Verdict

The call

The clearest difference is iOS requirement: CalAlarm Date Alarm Shift Work at 17.0 against Superclock's 27.0. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CalAlarm Date Alarm Shift Work sells 5 in-app purchases, starting at $0.99 per 7 days and Superclock sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CalAlarm Date Alarm Shift Work ships an update every 4 days, Superclock every 3 days. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

Scorecard1 real difference · 9 level
CalAlarm Date Alarm Shift Work versus Superclock: the parameters behind the verdict, then further details
ParameterCalAlarm Date Alarm Shift WorkSuperclock
PriceFreeFree
Rating4.0 (2 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 4 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone
Requires iOS17.0 — better27.0
Further details — not scored
Size22 MB54 MB
Age rating4+4+
Developerliang zhenyingSystem Operator LLC

In-app purchases

5 purchases

CalAlarm Date Alarm Shift Work

Subscriptions4
  • weekly$0.997 Days
  • quarterly$1.993 Months
  • monthly$3.991 Month
Show 1 more
  • yearly$5.991 Year
One-time1
  • Lifetime Membership$19.99
5 purchases

Superclock

One-time5
  • 7-day TrialFree
  • Trips$1.99
  • Meetings$1.99
Show 2 more
  • Reminders$1.99
  • Pro$4.99

Questions

Is CalAlarm Date Alarm Shift Work free?
CalAlarm Date Alarm Shift Work is free to download, with in-app purchases available.
Is Superclock free?
Superclock is free to download, with in-app purchases available.
Do CalAlarm Date Alarm Shift Work or Superclock have ads?
Neither CalAlarm Date Alarm Shift Work nor Superclock shows ads.
Which is updated more often, CalAlarm Date Alarm Shift Work or Superclock?
CalAlarm Date Alarm Shift Work ships an update every 4 days, and Superclock every 3 days. Most recently, CalAlarm Date Alarm Shift Work was updated on October 28, 2026 and Superclock on October 29, 2026.

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