# Between Dates Calendar Math vs Calculator83

The clearest difference is price: Calculator83 at Free against Between Dates Calendar Math's $0.99. Calculator83 also leads on rating (5.0 vs 4.8) and review sentiment (63% vs 50%). Between Dates Calendar Math's advantage is update cadence (every 4 months vs every 20 months) and ratings volume (42 vs 4). On ads, in-app purchases and device support there is nothing between them.

Calculator83 is free to download; Between Dates Calendar Math costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calculator83 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Between Dates Calendar Math has 42 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 50% of Between Dates Calendar Math's written reviews are positive against 63% of Calculator83's.

Between Dates Calendar Math ships an update every 4 months, Calculator83 every 20 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Between Dates Calendar Math | Calculator83 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.8 (42 ratings)](https://appshunter.io/ios/app/between-dates-calendar-math/id442169104/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/calculator83/id891194491/reviews)** |
| Number of ratings | **42** | 4 |
| Positive reviews | 50.0% of reviews | **62.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 20 months |
| Monetization | Paid | **Free** |
| Size | 1 MB | 10 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ducky Planet LLC](https://appshunter.io/developer/442169107) | [Lyker Labs LLC](https://appshunter.io/developer/891194494) |

## 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


### Calculator83

[App page](https://appshunter.io/ios/app/calculator83/id891194491)

A minimalist calculator app focused on simplicity and a clean workflow. It offers both basic and scientific modes, allowing users to perform calculations without complex settings. Get started quickly with this straightforward tool.

**Highlights:** Minimalist design, Clean workflow, Basic mode, Scientific mode, Easy to use

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

**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 Calculator83 free?

Calculator83 is free to download, with no in-app purchases.

### Which has better reviews, Between Dates Calendar Math or Calculator83?

Calculator83 is rated higher. Between Dates Calendar Math averages 4.8 out of 5 from 42 ratings, while Calculator83 averages 5.0 from 4 ratings.

### Do Between Dates Calendar Math or Calculator83 have ads?

Neither Between Dates Calendar Math nor Calculator83 shows ads.

### Which is updated more often, Between Dates Calendar Math or Calculator83?

Between Dates Calendar Math ships an update every 4 months, and Calculator83 every 20 months. Most recently, Between Dates Calendar Math was updated on October 23, 2026 and Calculator83 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.*