# Between Dates Calendar Math vs Countdown Color Timer

The clearest difference is update cadence: Between Dates Calendar Math at every 4 months against Countdown Color Timer's every 9 months. Between Dates Calendar Math also leads on device support (4 vs 2) and iOS requirement (13.0 vs 15.6). On price, ads and in-app purchases there is nothing between them.

Between Dates Calendar Math costs $0.99 and Countdown Color Timer $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

Between Dates Calendar Math ships an update every 4 months, Countdown Color Timer every 9 months. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Between Dates Calendar Math | Countdown Color Timer |
| --- | --- | --- |
| Price | $0.99 | **$0.49** |
| Rating | **[4.8 (42 ratings)](https://appshunter.io/ios/app/between-dates-calendar-math/id442169104/reviews)** | — |
| Number of ratings | **42** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 9 months |
| Monetization | Paid | — |
| Size | 1 MB | 0 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ducky Planet LLC](https://appshunter.io/developer/442169107) | [Stein Erik Nilsen](https://appshunter.io/developer/1737251651) |

## What reviewers say

### 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


### Countdown Color Timer

[App page](https://appshunter.io/ios/app/countdown-color-timer/id6482291398)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Between Dates Calendar Math free?

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

### Is Countdown Color Timer free?

Countdown Color Timer costs $0.49, with no in-app purchases.

### Do Between Dates Calendar Math or Countdown Color Timer have ads?

Neither Between Dates Calendar Math nor Countdown Color Timer shows ads.

### Which is updated more often, Between Dates Calendar Math or Countdown Color Timer?

Between Dates Calendar Math ships an update every 4 months, and Countdown Color Timer every 9 months. Most recently, Between Dates Calendar Math was updated on October 6, 2026 and Countdown Color Timer on October 7, 2026.

---

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