# CalAlarm Date Alarm Shift Work vs Superclock

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.

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.

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.

## The numbers

| Metric | CalAlarm Date Alarm Shift Work | Superclock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/calalarm-date-alarm-shift-work/id6789426037/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 22 MB | 54 MB |
| Requires iOS | **17.0** | 27.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [liang zhenying](https://appshunter.io/developer/987036715) | [System Operator LLC](https://appshunter.io/developer/1847669767) |

## What reviewers say

### CalAlarm Date Alarm Shift Work

[App page](https://appshunter.io/ios/app/calalarm-date-alarm-shift-work/id6789426037)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| weekly | $0.99 | per 7 days |
| quarterly | $1.99 | per 3 months |
| monthly | $3.99 | per month |
| yearly | $5.99 | per year |
| Lifetime Membership | $19.99 | one-time |


### Superclock

[App page](https://appshunter.io/ios/app/superclock-alarm-clock-timer/id6816954181)

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-day Trial | Free | one-time |
| Trips | $1.99 | one-time |
| Meetings | $1.99 | one-time |
| Reminders | $1.99 | one-time |
| Pro | $4.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*