# CalendarRef vs Lucky 7 Machines

CalendarRef and Lucky 7 Machines are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | CalendarRef | Lucky 7 Machines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calendarref/id6749834885/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Monetization | Free | — |
| Size | 1 MB | 5 MB |
| Requires iOS | 18.5 | **17.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Derrick Braga](https://appshunter.io/developer/1832376581) | [Sang Young Oh](https://appshunter.io/developer/6776559061) |

## What reviewers say

### CalendarRef

[App page](https://appshunter.io/ios/app/calendarref/id6749834885)

This app provides a fast, minimalist calendar reference for quickly finding the day of the week for any date. It offers full-year and monthly views with clean layouts, supporting BCE/CE years and accurate historical calendar conversions. It works offline without ads or tracking.

**Highlights:** Full-year view, Monthly layouts, Instant year navigation, BCE/CE year support, Julian/Gregorian calendar handling, Optional date highlights, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Lucky 7 Machines

[App page](https://appshunter.io/ios/app/lucky-7-machines/id6777675968)

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

**In-app purchases:** none


## Frequently asked questions

### Is CalendarRef free?

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

### Is Lucky 7 Machines free?

Lucky 7 Machines is free to download, with no in-app purchases.

### Do CalendarRef or Lucky 7 Machines have ads?

Neither CalendarRef nor Lucky 7 Machines shows ads.

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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.*