# Date & Time Interval vs Shift Work Calendar & Schedule

Date & Time Interval and Shift Work Calendar & Schedule both sit at 4.7 stars, but that hides the real split: 82% of Date & Time Interval's written reviews are positive against 47% of Shift Work Calendar & Schedule's. Date & Time Interval also leads on in-app purchases (none vs 9) and iOS requirement (12.0 vs 15.6). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Shift Work Calendar & Schedule sells 9 in-app purchases, starting at $0.99 per month. Date & Time Interval asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Date & Time Interval against 4.6 for Shift Work Calendar & Schedule. Both are backed by a comparable volume of ratings — 115 and 304 respectively. Written reviews are what separate them: 82% of Date & Time Interval's written reviews are positive against 47% of Shift Work Calendar & Schedule's.

Date & Time Interval ships an update every 4 weeks, Shift Work Calendar & Schedule monthly. The most recent releases landed on September 12, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Date & Time Interval | Shift Work Calendar & Schedule |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (115 ratings)](https://appshunter.io/ios/app/date-and-time-interval/id1231298346/reviews)** | [4.6 (304 ratings)](https://appshunter.io/ios/app/shift-work-calendar-and-schedule/id1582981509/reviews) |
| Number of ratings | 115 | **304** |
| Positive reviews | **81.8% of reviews** | 46.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 15 MB | 48 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [SACHIN SABU](https://appshunter.io/developer/1172690974) | [4TH FLOOR APPS SIA](https://appshunter.io/developer/1582981511) |

## What reviewers say

### Date & Time Interval

[App page](https://appshunter.io/ios/app/date-and-time-interval/id1231298346)

Calculate time intervals, age, and perform date arithmetic with ease. This tool helps you add or subtract years, months, and days, convert time zones, and count exact hours and days between dates.

**Highlights:** Calculate interval between two dates, Detailed age calculator, Add/subtract years, months, days, Convert time zones, Hour and minute calculations (HH:MM format), Working week calculator (include/exclude weekends)

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

**In-app purchases:** none


### Shift Work Calendar & Schedule

[App page](https://appshunter.io/ios/app/shift-work-calendar-and-schedule/id1582981509)

Organize your work and personal life with this calendar app designed for shift workers. Easily plan your days off, track income, and manage complex schedules. Supports multiple calendars for different jobs or colleagues.

**Highlights:** Create custom and preset shift patterns, Track income and hourly rates, Manage multiple job calendars, Input personal events and vacations, Analyze working hours and earnings, Compare schedules with coworkers, Backup and restore calendars

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month of Shift Work Calendar | $0.99 | per month |
| Shift Work Calendar Premium | $0.99 | per 7 days |
| 1 Month of Shift Work Calendar | $2.99 | per month |
| 3 Months Shift Work Schedule | $5.99 | per 3 months |
| 1 Year of Shift Work Calendar | $11.99 | per year |
| 1 Year of Shift Work Calendar | $11.99 | per year |
| 1 Year of Shift Work Calendar | $11.99 | per year |
| 1 Year of Shift Work Calendar | $22.99 | per year |
| Shift Work Lifetime Premium | $12.99 | one-time |


## Frequently asked questions

### Is Date & Time Interval free?

Date & Time Interval is free to download, with no in-app purchases.

### Is Shift Work Calendar & Schedule free?

Shift Work Calendar & Schedule is free to download, with in-app purchases available.

### Which has better reviews, Date & Time Interval or Shift Work Calendar & Schedule?

Date & Time Interval is rated higher. Date & Time Interval averages 4.7 out of 5 from 115 ratings, while Shift Work Calendar & Schedule averages 4.6 from 304 ratings.

### Do Date & Time Interval or Shift Work Calendar & Schedule have ads?

Both Date & Time Interval and Shift Work Calendar & Schedule show ads.

### Which is updated more often, Date & Time Interval or Shift Work Calendar & Schedule?

Date & Time Interval ships an update every 4 weeks, and Shift Work Calendar & Schedule monthly. Most recently, Date & Time Interval was updated on September 12, 2026 and Shift Work Calendar & Schedule on September 21, 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.*