# Shift Calendar vs Between Dates Calendar Math

The clearest difference is rating: Between Dates Calendar Math at 4.8 against Shift Calendar's 2.3. Between Dates Calendar Math also leads on review sentiment (50% vs 28%) and device support (4 vs 2). Shift Calendar's advantage is update cadence (fortnightly vs every 4 months) and chart position (#191 vs unranked). On ratings volume, ads and in-app purchases there is nothing between them.

Shift Calendar costs $1.99 and Between Dates Calendar Math $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Between Dates Calendar Math holds the better App Store score, 4.8 against 2.3. Both are backed by a comparable volume of ratings — 83 and 42 respectively. Written reviews point the same way: 28% of Shift Calendar's written reviews are positive against 50% of Between Dates Calendar Math's.

Shift Calendar ships an update fortnightly, Between Dates Calendar Math every 4 months. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Shift Calendar | Between Dates Calendar Math |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | [2.3 (83 ratings)](https://appshunter.io/ios/app/shift-calendar/id355449249/reviews) | **[4.8 (42 ratings)](https://appshunter.io/ios/app/between-dates-calendar-math/id442169104/reviews)** |
| Number of ratings | **83** | 42 |
| Positive reviews | 27.9% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | **Free** | Paid |
| Best chart rank | **#191** | — |
| Size | 1 MB | 1 MB |
| Requires iOS | **8.4** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Gil Estes](https://appshunter.io/developer/349882768) | [Ducky Planet LLC](https://appshunter.io/developer/442169107) |

## What reviewers say

### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar/id355449249)

**Currently charting:** #191 Top Paid · Utilities (US App Store)

A customizable shift calendar designed for firefighters, paramedics, and EMS workers. Easily track work and off days for important personal events, supporting various common shift patterns. Includes note-taking for each shift day.

**Highlights:** Customizable shift schedules, Supports 24/24, 24/48, 24/72 patterns, Supports 48x96 pattern, Alpha and Numeric shift naming, Notes for each shift day, Designed for firefighters and EMS

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use
- 🎨 Customizable shift colors
- ✅ Works for basic schedules
- 📝 Notes feature is great
- 🔄 Smoothly running after updates

**What reviewers complain about**

- 💸 Waste of money
- 🚫 Only allows certain schedules
- 📉 Outdated and not updated
- ❌ Incompatible with new iOS
- 😵 Confusing multiple apps

**Reported bugs**

- Download did not complete
- App keeps crashing
- App does not open
- App is inoperable after Apple update
- App crashes when opening date and adding notes

**Requested features**

- Accommodate 48/96 schedules
- Support for 4 on 4 off shifts
- Support for 5 days on, 4 days off schedules
- Support for split shifts (2x10hrs off 24 then 2x14hrs then off for 4 days)
- Add more shift variations


### Between Dates Calendar Math

[App page](https://appshunter.io/ios/app/between-dates-calendar-math/id442169104)

Calculate the number of days between two dates with a simple interface. Save, recall, sort, and remove date calculations. Add or subtract days from selected dates for quick date projections.

**Highlights:** Calculate days between dates, Save and recall date calculations, Sort and remove saved dates, Add or subtract days, Copy dates to start/end, Reset dates to current

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Shift Calendar free?

Shift Calendar costs $1.99, with no in-app purchases.

### Is Between Dates Calendar Math free?

Between Dates Calendar Math costs $0.99, with no in-app purchases.

### Which has better reviews, Shift Calendar or Between Dates Calendar Math?

Between Dates Calendar Math is rated higher. Shift Calendar averages 2.3 out of 5 from 83 ratings, while Between Dates Calendar Math averages 4.8 from 42 ratings.

### Do Shift Calendar or Between Dates Calendar Math have ads?

Neither Shift Calendar nor Between Dates Calendar Math shows ads.

### Which is updated more often, Shift Calendar or Between Dates Calendar Math?

Shift Calendar ships an update fortnightly, and Between Dates Calendar Math every 4 months. Most recently, Shift Calendar was updated on November 6, 2026 and Between Dates Calendar Math on November 1, 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.*